MACHINE ELEMENTS 01
Past ME Board Question
1. Heating above the
transformation range, usually
1300˚F to 1350˚F, and cooling
slowly to soften the metal and
increase in machining.
A.Annealing
B.Hardening
C.Normalizing
D. Tempering
Answer: A
2. Heating above the
transformation temperature and
quenching usually in oil, for the
purpose of increasing the hardness.
A.Annealing
B.Hardening
C.Normalizing
D. Tempering
Answer: B
3. Reheating to a temperature
below the transformation range,
followed by any desire rate of
cooling to attain the desired
properties of the metal.
A.Annealing
B.Hardening
C.Tempering
D. Stress relieving
Answer: C
4. Heating to a subcritical temperature,
about 1,100˚F to 1,300˚F and holding
at that temperature for a suitable time
for the purpose of reducing internal
residual stresses.
A. Annealing
B. Hardening
C. Tempering
D.Stress relieving
Answer: D
5. Heating to some 100˚F above the
transformation range with subsequent cooling to below that range in
still air at room temperature to
produce uniform structure of the
metal.
A.Annealing
B. Hardening
C. Normalizing
Answer: C
D. Tempering
6. A machine tool used for
producing holes in metal by the
use of a cutting tool called drill.
A. Drilling machine
B. Boring machine
C. Milling machine
D. Broaching machine
Answer: A
7. A machine tool used to form metal
parts by removing metal from a work
piece by the use of a revolving cutter
with many teeth., each tooth having a
cutting edge which removes its share
of the stock.
A. Drilling machine
B. Boring machine
C. Milling machine
Answer: C
D.Broaching machine
8. A machine tool used to
sharpen or shape tools by
using an abrasive wheel.
A. Tool grinder
B. Shaper
C. Planer
D. Power saw
Answer: A
9. A machine tool used to enlarge a
hole by means of an adjustable
cutting tool with only one cutting
edge.
A.Drilling machine
B.Boring machine
C.Milling machine
D. Broaching machine
Answer: B
10. A machine tool used to cut
metal parts of light, medium and
large sections using a reciprocating
hacksaw blade.
A.Tool grinder
B.Shaper
C.Planer
D. Power saw
Answer: D
11. A machine tool used to flat
or plane surfaces with a single
point cutting tool.
A. Tool grinder
B. Shaper
C. Planer
D. Power saw
Answer: D
12. A machine tool used for
production of flat surfaces on
pieces too large or too heavy to
hold in a shaper.
A.Tool grinder
B.Shaper
C.Planer
D. Power saw
Answer: C
13. A machine tool used to finish
internal or external surfaces, such as
holes or key ways by the use of a
cutter called a broach, which has a
series of cutting edges or teeth.
A. Drilling machine
B. Boring machine
C. Milling machine
D.Broaching machine
Answer:
D
14. An alloy of copper and
tin.
A. Brass
B. Bronze
C. Iron
D. Tin
Answer: B
15. An alloy of copper and
zinc.
A. Brass
B. Bronze
C. Iron
D. Tin
Answer:
A
16. An alloy of copper and
zinc.
A. Brass
B. Bronze
C. Iron
D. Tin
Answer:
A
17. The process of forming a metal
part by the use of a powerful pressure
from a hammer or press to obtain the
desired shape, after the metal has
been heated to its plastic range.
A. Rolling
B. Forging
C. Turning
D.Casting
Answer:
B
18. A manganese steel
containing approximately 0.20
carbon.
A. SAE 1320
B. SAE 1230
C. SAE 2340
D. SAE 4230
Answer:
A
19. A machine tool in which metal is
removed by means of a revolving
cutter with many teeth, each tooth
having a cutting edge which remove
its share of the stock.
A. Milling machine
B. Broaching machine
C. Lathe machine
D.Boring machine
Answer:
A
20. A metal turning machine tool in
which the work, while revolving on a
horizontal axis, is acted upon by a
cutting tool which is made to move
slowly (feed) in a direction more or less
parallel to the axis of the work
(longitudinal feed).
A. Milling machine
B. Broaching machine
C. Lathe machine
D. Boring machine
Answer:
C
21. A machine tool used in the
production of flat surfaces on pieces
too large or too heavy or, perhaps too
awkward to hold in a shaper.
A. Shaper
B. Planer
C. Tool grinder
D.Power saw
Answer:
B
22. It consists of shaping a piece
by bringing it into contact with
a rotating abrasive wheel.
A. Drilling
B. Boring
C. Grinding
D. Broaching
Answer:
C
23. A tool used in measuring
diameters.
A. Caliper
B. Nanometer
C. Tachometer
D. Pyrometer
Answer:
A
24. Used to true and align machine tools,
fixtures and works to test and inspect size
trueness of finished work and to compare
measurements either heights or depths or
many other measurements.
A. Dial gauge
B. Dial indicator
C. Tachometer
D. Speedometer
Answer:
B
25. The ability of metal to be
deformed considerably without
rupture.
A.Ductility
B.Plasticity
C.Malleability
D. Elasticity
Answer:
B
26. The shop term used to include the
marking or inscribing of center points,
circles, arcs or straight lines upon metal
surfaces, either curved or flat, for the
guidance of the worker.
A. Shaping
B. Hobbing
C. Laying out
D. Shaping
Answer:
C
27. An operation of sizing and
finishing a hole by means of a
cutting tool having several cutting
edges.
A.Notching
B.Piercing
C.Turning
D. Reaming
Answer:
D
28. An operation of sizing and
finishing a hole by means of a
cutting tool having several cutting
edges.
A.Notching
B.Piercing
C.Turning
D. Reaming
Answer:
D
29. The operation of enlarging a
hole by means of an adjustable
cutting tool with only one cutting
edge.
A.Drilling
B.Broaching
C.Milling
D. Boring
Answer:
D
30. An imaginary circle passing
through the points at which the
teeth of the meshing gears contact
each other.
A.Pitch circle
B.Addendum circle
C.Dedendum circle
D. Base circle
Answer:
A
31. A type of bolt intended for use in
bolting wooden parts together or wood to
metal. It has a short portion of shank just
underneath a round head, which is
designed to keep the bolt from turning in
the wood when the nut is tightened.
A. U-bolt
B. Carriage bolt
C. Eye bolt
D. Stud bolt
Answer:
B
32. The number of teeth per inch of
pitch diameter and which gives
some indications of the size of the
gear teeth.
A.Module
B. Pitch circle
C. Diametral pitch
D. Circular pitch
Answer:
C
33. The number of teeth per inch of
pitch diameter and which gives
some indications of the size of the
gear teeth.
A.Module
B. Pitch circle
C. Diametral pitch
D. Circular pitch
Answer:
C
34. The portion of a gear tooth
that projects above or outside the
pitch circle.
A.Top relief
B.Dedendum
C.Addendum
D. Tooth space
Answer:
C
35. The portion of a gear tooth
space that is cut below the pitch
circle and is equal to the addendum
plus the clearance.
A.Top root
B. Dedendum
C. Addendum
D. Top land
Answer:
B
36. When meshed with a gear,
it is used to change rotary
motion to reciprocating motion.
A. Gear shaft
B. Gear tooth
C. Gear rack
D. Gear motor
Answer:
C
37. A kind of gear used for heavy duty
works where a large ratio of speed is
required and are extensively used in
speed reducers.
A. Bevel gears
B. Worm gears
C. Helical gears
D.Spiral gears
Answer:
B
38. A kind of gears used to
transmit motion from one shaft to
another shaft at an angle to the
first.
A.Bevel gears
B.Worm gears
C.Helical gears
D. Spiral gears
Answer:
A
39. The uniform heating of steel
above the usual hardening
temperatures followed by cooling
freely in the air.
A.Annealing
B.Normalizing
C.Hardening
D. Tempering
Answer:
B
40. The operation of cooling a
heated piece of work rapidly by
dipping it in water, brine or oil.
A.Quenching
B.Tempering
C.Normalizing
D. Annealing
Answer:
A
41. A method used In softening a piece of
metal that is too hard to machine and is
done by heating steel slowly above the usual
hardening temperature, keeping it at the
heat for ½ to 2 hours, then cooling slowly,
preferably in a furnace.
A. Broaching
B. Quenching
C. Normalizing
D. Annealing
Answer:
D
42. The total permissible variation
in the size of a dimension; the
difference between the limits of
size.
A.Allowance
B.Tolerance
C.Variance
D. Interface
Answer:
B
43. The operation of machining
the end of a work piece to mark
the end square with the axis.
A.Squaring
B.Buffing
C.Lapping
D. Honing
Answer:
A
44. The clearance between the
tooth profiles of a gear tooth.
A. Toothspace
B. Backlash
C. Flank
D. Width
Answer:
B
45. A mechanism which usually
do the indexing in a machine
tool.
A. Slotter
B. Chuck
C. Dividing head
D. Indexer
Answer:
C
46. A material that can wear
away a substance softer than
itself.
A. Phenol
B.Abrasive
C.Tungsten
D. Chromium
Answer:
B
47. A cylindrical bar of steel with
threads formed around it and grooves
or flutes running lengthwise in it,
intersecting with the threads to form
cutting edges. It is used to cut internal
threads.
A. Groove
B. Lap
C. Tap
D. Flute
Answer:
C
48. A set of gages consisting of thin
strips of metal of various thickness
mounted in a steel case or holder and
is widely used for measuring and
checking clearances.
A. Feeler gage
B. Depth gage
C. Line center gage
D.Lay-out gage
Answer:
A
49. A machine tool which is very
similar to a shaper except that the ram
reciprocates vertically rather than
horizontally.
A. Lathe
B. Grinder
C. Planer
D.Slotter
Answer:
D
50. A machine tool used principally
to machine flat or plane surfaces
with single-point cutting tool.
A.Grinder
B.Shaper
C.Planer
D. Turret lathe
Answer:
B
51. A kind of bolt which has no
head an instead has threads on
both ends.
A. Stud bolts
B. Acme threaded bolts
C. Hex bolts
Answer:
A
52. A kind of chuck which has
reversible jaws which could be
adjusted separately.
A. Collet chuck
B. Independent chuck
C. Four jaw chuck
D. Two jaw chuck
Answer:
B
53. A tool which when pressed into a
finished hole in a piece of work,
provides centers on which the piece
may be turned or otherwise machined.
A. Mash
B. Butt
C. Mandrel
D.Wobble
Answer:
C
54. A kind of chuck which should
not be used where extreme
accuracy is required.
A.Collet chuck
B.Magnetic chuck
C.Four jaw chuck
D. Universal chuck
Answer:
D
55. The process of checking or
producing checkers on the surface of a
piece by rolling checkered depressions
into the surface.
A. Knurling
B. Hemming
C. Breading
D.Embossing
Answer:
A
56. In fits into the main spindle of a
lathe and is so called because it acts as
bearing surface on which the work rests.
It revolves with the work. When
compared with the hardness of the dead
center in the tailstock, it is usually soft
and is so made since it does no work.
A. Ram center
B. Spindle center
C. Live center
D. Bearing center
Answer:
C
57. A gripping device with two
or more adjustable jaws set
radially.
A. Chuck
B. Carriage
C. Tailstock
D. Fan
Answer:
A
58. Steel balls for ball bearings
are manufactured by:
A. Turning
B. Rolling
C. Casting
D. Cold heading
Answer:
C
59. Addendum of a cycloidal
gear tooth is:
A. Cycloid
B. Epicycloids
C. Straight rack
D. Involute
Answer:
B
60. In a lathe, it comprises the main
spindle, the necessary mechanism for
obtaining the various spindle speed and
also certain gears which are used to
operate the quick-change gear mechanism.
A. Headstock
B. Carriage
C. Tailstock
D. Fan
Answer:
A
61. The process of heating a piece
of steel to a temperature within or
above critical range and cooling
rapidly.
A.Normalizing
B.Hardening
C.Annealing
D. Tempering
Answer:
B
62. Welding operation in which a
non-ferrous filler metal melts a
temperature below that of the
metal joined but is heated above
450˚C.
A.Gas welding
B.Spot welding
C.Brazing
Answer:
D. Steam welding
C
63. Uniting two pieces of metal by
means of a different metal which
is applied between the two in
molten state.
A.Casting
B.Welding
C.Soldering
D. Brazing
Answer:
C
64. Fusion process in which the
metal is heated into a state of
fusion permitting it to flow
together into a solid joint.
A.Electric arc welding
B.Gas welding
C.Spot welding
D. Projection welding
Answer:
A
65. Joining metal by means of high
current at low voltage. Dur6ing
the passage of current, pressure by
the electrodes produces a forge
weld.
A.Spot welding
B.Resistance welding
C.Steam welding
Answer:
D. Gas welding
B
66. A device for accurately
measuring diameters.
A.Radiometer
B.Feeler gage
C.Spectrometer
D. Micrometer
Answer: D
67. A group of thin steel strips for
measuring clearances.
A.Distortion gage
B.Feeler gage
C.Line center gage
D. Deflection gage
Answer:
B
68. A hand tool used to measure
engine crank wed deflections.
A. Distortion gage
B. Feeler gage
C. Line center gage
D. Deflection gage
Answer:
A
69. A hand tool used to measure
tension on bolts.
A.Indexer
B.Torque wrench
C.Torsionmeter
D. Tensiometer
Answer:
B
70. The permissible variation in
the size of a dimension; the
difference between the limits of
size.
A.Allowance
B.Variance
C.Clearance
D. Tolerance
Answer:
D
71. A gear with teeth on the outer
cylindrical surface.
A.Outer gear
B.External gear
C.Spiral gear
D. Helical gear
Answer:
B
72. The diameter of a circle
coinciding with the top of the
teeth of an internal gear.
A.Pitch diameter
B.Root diameter
C.Internal diameter
D. Central diameter
Answer:
C
73. A circle coinciding with a
tangent to the bottom of the tooth
space.
A.Root circle
B.Pitch circle
C.Addendum circle
D. Dedendum circle
Answer:
A
74. The total depth of a tooth
space, equal to addendum plus
dedendum.
A.Full depth
B.Working depth
C.Whole depth
D. Dedendum
Answer:
C
75.The depth of tooth space
below the pitch circle.
A. Dedendum
B. Working depth
C. Full depth
D. Tooth depth
Answer:
A
76. The gear teeth to each mm
pitch diameter.
A. Diametral pitch
B. Module
C. Circular pitch
D. English module
Answer:
A
77. A machine tool in which
abrasive wheel is used as cutting
tool to obtain a very smooth finish.
A.Drill
B.Grinder
C.Planer
D. Shaper
Answer:
B
78. It is used to produce a variety
of surfaces by using a circular-type
cutter with multiple teeth.
A.Grinding machine
B.Shaper
C.Drilling machine
D. Milling machine
Answer:
D
79. It is used principally to
machine flat or plane surfaces with
single-point tool.
A.Drill
B.Shaper
C.Planer
D. Tool grinder
Answer:
B
80. Cutting a hole by means of
rotating tool or the work may revolve
and to the tool remain fixed as in the
lathe.
A. Piercing
B. Notching
C. Boring
D.Perforating
Answer:
C
81. One of the following is not a
tap used for cutting threads in
holes.
A. Tapping tap
B. Plug tap
C. Taper tap
D. Bottoming tap
Answer:
A
82. An index or dividing head.
A.A part of a drill press
B.Used to rotate the work
C.Not used to cut helixes
D. Always manually operated
Answer:
B
83. Galvanized iron is a term
referring to iron coated with:
A. Tin
B. Zinc
C. Magnesium
D. Aluminum
Answer:
B
84. The moment of inertia of a
rectangle whose base is “b” and
height “h” about its base is:
A.Bh3/12
B.Bh/36
C.Bh3/3
D. Bh2/4
Answer:
C
85. In usual spur gearing:
A. The pitch circle and the base circle
are the same
B. Working depth includes the
clearance
C. Tooth outline are usually involute
curves
D.Tooth outline are always cycloidal
curves
Answer:
C
86. A stainless steel is obtained
principally by the use of the
following alloying element.
A.Chromium
B.Tungsten
C.Carbon
D. Phenol
Answer:
A
87. One of the following is not a
common term relating to the
classification of fits.
A.Tunking
B.Snug
C.Medium force fit
D. Bound
Answer: D
88. Hearingbone gears are gears which:
A. Do not operate on parallel shaft
B. Have a line of contact between the
teeth
C. Consist of two left handed helical
gears
D.Tend to produce thrust on the shafts
Answer:
B
89. Internal stresses existing in a
welded connection:
A. Are not relieved when the weld is
peened
B. Are not relieved by heat treatment
C. May be relieved when the weld is
peened
D.Are relieved by x-ray analysis
Answer:
A
90. In general the design stress and factor of
safety are related as follows:
A. Design stress = ultimate stress times factor of
safety
B. Design stress = ultimate stress divided by
factor of safety
C. Design stress = design stress divided by
ultimate stress
D. Design stress = factor of safety divided by
design stress
Answer:
B
91. A group of thin steel strips for
measuring clearances.
A.Depth gage
B.Feeler gage
C.Lay-out gage
D. Clearance gage
Answer:
B
92. A hand tool used to measure
tension on bolts.
A. Indexer
B. Torsionmeter
C. Torque wrench
D. Tensiometer
Answer:
C
93. A material that can wear
away a substance softer than
itself.
A. Abrasive
B. Corrosive
C. Tungsten
D. Alloy
Answer:
A
94. The material used in high
speed processes.
A. High speed steel
B. Chromium
C. Cast iron
D. Carbon steel
Answer:
A
95. An alloy of copper or zinc.
A. Chromium
B. Bronze
C. Brass
D. Aluminum
Answer:
C
96. An alloy of copper, tin and
small amount of phosphorous.
A. Chromium
B. Bronze
C. Brass
D. Aluminum
Answer:
B
97. The process of working metals
by the application of sudden blows
or by steady pressure.
A.Welding
B.Extursion
C.Forging
D. Swaging
Answer:
C
98. A welding operation in which a
non-ferrous filler metal melts at a
temperature below that of the
metal joined but is heated above
450˚C.
A.Brazing
B.Spot welding
C.Gas welding
D. Projection welding Answer:
A
99. The operation of cooling a
heated piece of work rapidly by
dipping it in water, brine or oil.
A. Tempering
B. Annealing
C. Quenching
D. Normalizing
Answer:
C
100. A machine tool used to
machine flat surfaces.
A. Shaper
B. Planer
C. Grinder
D. Lathe
Answer:
A
MACHINE ELEMENTS 02
Past ME Board Question
1. A machine tool in which
abrasive wheel is used as cutting
tool to obtain a very smooth finish.
A.Planer
B.Shaper
C.Power saw
D. Grinder
Answer:
D
2. It is used to produce a variety of
surfaces by using a circular type
cutter with multiple teeth.
A.Milling machine
B.Broaching machine
C.Beading machine
D. Hemming machine
Answer:
A
3. A heavy rotating body which
serves as reservoir for absorbing
and redistributing kinetic energy.
A.Shaft
B.Governor
C.Flywheel
D. Puncher
Answer:
C
4. A kind of gear used for heavy duty
works where a large ratio of speed is
required and are extensively used in
speed reducers.
A. Helical gears
B. Worm gear
C. Bevel gear
D.Spiral gear
Answer:
B
5. A kind of gear used to transmit
motion from one shaft to another
shaft at angle to the first.
A.Helical gear
B.Worm gear
C.Bevel gear
D. Spiral gear
Answer:
C
6. The minimum thickness of steel
members exposed weather and
accessible for painting is:
A.6 mm
B.8 mm
C.4 mm
D. 10 mm
Answer:
D
7. The common deoxidizer and
cleanser of steel, forming oxides and
sulfates, that are carried off in the slag.
A. Manganese
B. Carbon
C. Tungsten
D.Sulfur
Answer:
A
8. A highly transparent and
exceedingly hard crystalline stone
of almost pure action.
A.Gold
B.Diamond
C.Bronze
D. Crystalline
Answer:
B
9. A fine grained, salty silica
rock used for sharpening edge
tools.
A. Eutectoid
B. Austenite
C. Oilstone
D. Pearlite
Answer:
C
10. An amorphous solid made by
fusing silica with a basic oxide.
A.Pearlite
B.Rock
C.Silicon
D. Glass
Answer:
D
11. A soft yellow metal, known
since ancient times a precious
metal which all material values are
based.
A.Solidus
B.Bronze
C.Gold
D. Austenite
Answer:
C
12. The operation of cooling a
heated piece of work rapidly by
dropping it in water, brine or oil.
A.Normalizing
B.Quenching
C.Annealing
D. Squeezing
Answer:
B
13. A device used to prevent
leakage of media.
A. Seal
B. Packings
C. Teflon
D. Graphite
Answer:
A
14. A welding operation in which a
non-ferrous filler metal melts at a
temperature below that of the metal
joined but is heated above 450˚C.
A. Arc welding
B. Brazing
C. Spot welding
D.Butt welding
Answer: B
15. The process of working metals
by the application of sudden blows
or by a steady pressure.
A.Trimming
B.Welding
C.Forging
D. Lancing
Answer:
C
16. The process of producing a
variety of surfaces by using a
circular type with multiple teeth.
A.Piercing
B.Cutting
C.Embossing
D. Milling
Answer:
D
17. The softening of metals by heat
treatment and most commonly
consists of heating the metals up to
near molten state and then cooling
them very slowly.
A. Quenching
B. Tempering
C. Annealing
D.Forming
Answer:
C
18. The maximum stress induced in
a material when subjected to
alternating or repeated loading
without causing failure.
A.Elastic limit
B. Proportional limit
C. Rupture strength
D. Endurance limit
Answer:
D
19. The total deformation
measured in the direction of the
line of stress.
A.Axial deformation
B.Elongation
C.Strain
D. Unit stress
Answer:
C
20. The maximum stress to which a
material can be subjected without a
trace to any permanent set remaining
upon a complete withdrawal of the
stress.
A. Ultimate limit
B. Proportional limit
C. Endurance limit
D.Elastic limit
Answer:
D
21. The total permissible variation in
the size of a dimension; the difference
between the limits of the size.
A. Deformation
B. Variance
C. Tolerance
D.Allowance
Answer:
C
22. Fluid film distance between
two surfaces having relative sliding
motion.
A.Lube oil
B.Lubrication
C.Graphite
D. Grease
Answer:
B
23. Flexible material used to seal
pressurized fluids, normally under
dynamic conditions.
A.Packings
B.Teflon
C.Seals
D. Safety shield
Answer:
A
24. A total resistance that a
material offers to an applied load.
A.Flexure
B.Stress
C.Elasticity
D. Rigidity
Answer:
B
25. A property of material which
relates the lateral strain to the
longitudinal strain.
A.Rigidity
B.Elasticity
C.Poisson’s ratio
D. Deflection
Answer:
C
26. A kind of gear used for heavy duty
works where a large ratio of speed is
required and are extensively used in
speed reducers.
A. Spiral gear
B. Bevel gear
C. Worm gear
D.Helical gear
Answer:
C
27. A kind of gear used to transmit
motion from one shaft to another
at angle to the first.
A.Spiral gear
B.Worm gear
C.Helical gear
D. Bevel gear
Answer:
D
28. Which of the following is not a
classification of iron ore?
A.Hematite
B.Magnetite
C.Sulfurite
D. Siderite
Answer:
C
29. Which of the following metals
will respond to heat treatment?
A.Cast iron
B.Medium carbon steel
C.Wrought iron
D. Low carbon steel
Answer:
B
30. Which of the following is nonmagnetic?
A.Cast iron
B.Alloy steel
C.Cast steel
D. Manganese steel
Answer:
D
31. The ability of metal to
withstand loads without breaking
down is:
A.Stress
B.Strength
C.Strain
D. Elasticity
Answer: B
32. A machining operation
whereby the tool reciprocates and
the feed is stationary is called:
A.Shaping
B.Reaming
C.Planning
D. Turning
Answer:
A
33. Any material that retard the flow
of electricity used to prevent passage
or escape of electric current from
conductors.
A. Insulators
B. Bricks
C. Ceramics
D.Refractories
Answer:
A
34. A metallic element and the
only metal that is liquid at
ordinary temperature.
A.Austenite
B.Mercury
C.Manganese
D. Martensite
Answer:
B
35. An alloy of copper and zinc.
A. Aluminum
B. Bronze
C. Brass
D. Nickel
Answer:
C
36. Usually a copper-tin alloy is:
A.Aluminum
B.Nickel
C.Brass
D. Bronze
Answer:
D
37. A tool with hardened points
used for scribing circles or laying of
distances.
A.Trammel
B.Caliper
C.Divider
D. Micrometer
Answer:
C
38. Name of mechanism which a
welding operator holds during gas
welding at the end of which the gases
are burned to perform various gas
welding operations.
A. Mash
B. Core
C. Wobble
D.Torch
Answer:
D
39. The maximum stress to which
a material may be subjected before
failure occurs.
A.Rupture stress
B.Yield stress
C.Ultimate stress
D. Allowable stress
Answer:
C
40. The maximum stress induced in
a material when subjected to
alternate or repeated loading
without causing failure.
A.Yield point
B. Ultimate point
C. Endurance limit
D. Proportional limit
Answer:
C
41. Which of the following is not a
classification of iron ore?
A.Hematite
B.Magnetite
C.Sulfurite
D. Siderite
Answer:
C
42. Of the following metals, which
will respond to heat treatment?
A.Cast iron
B.Wrought iron
C.Medium iron
D. Low carbon iron
Answer:
C
43. Materials, usually ceramics,
employed where resistance to very
high temperature is required, as for
furnace linings and metal melting pots.
A. Refractories
B. Gaskets
C. Insulators
D.Safety shield
Answer:
A
44. The softening of metals by heat
treatment and most commonly
consists of heating the metals up to
near molten state and then cooling
them very slowly.
A. Annealing
B. Hardening
C. Normalizing
D.Tempering
Answer:
A
45. The process of producing a
variety of surfaces by using a
circular type cutter with multiple
teeth.
A.Milling
B.Drilling
C.Broaching
D. Boring
Answer:
A
46. The process of working metals
by the application of sudden blows
or by a steady pressure.
A.Rolling
B.Forging
C.Casting
D. Turning
Answer:
B
47. A welding operation in which a
non-ferrous filler metal melts at a
temperature below that of the metal
joined but is heated above 450C.
A. Spot welding
B. Gas welding
C. Brazing
D.Arc welding
Answer:
C
48. The operation of cooling
heated piece of work rapidly by
dropping it in water, brine or oil.
A.Quenching
B.Tempering
C.Annealing
D. Normalizing
Answer:
A
49. A machine tool in which abrasive
wheel is used as a cutting tool to obtain a
very high degree of accuracy and a smooth
finish on metal parts, including soft and
hardened steel.
A. Grinding machine
B. Broaching machine
C. Milling machine
D. Boring machine
Answer:
A
50. A machine tool used to
principally machine flat or place
surfaces with a single point cutting
tool.
A.Shaper
B.Planer
C.Grinder
D. Broaching machine
Answer:
A
51. A tool used for measuring
diameters.
A.Micrometer
B.Tachometer
C.Pyrometer
D. Caliper
Answer:
D
52. The total permissible variation in
the size of a dimension; the difference
between the limits of the size.
A. Tolerance
B. Fits
C. Allowance
D.Clearance
Answer:
A
53. The maximum stress to which a
material can be subjected upon without a
trace of any permanent set remaining
upon a complete withdrawal of the stress.
A. Ultimate stress
B. Rupture stress
C. Elastic limit
D. Proportional limit
Answer:
C
54. Fluid film desired between two
surfaces having relative sliding
motion.
A.Lubrication
B.Seal
C.Packing
D. Safety shield
Answer:
A
55. A total deformation measured
in the direction of the line of stress.
A.Stress
B.Strain
C.Endurance limit
D. Poisson’s ratio
Answer:
B
56. A kind of gear used for heavy duty
works where a large ratio of speed is
required and are extensively used in
speed reducers.
A. Worm gear
B. Spiral gear
C. Helical gear
D.Bevel gear
Answer:
A
57. A kind of gear used to
transmit motion from one shaft
to another shaft at angle to the
first.
A. Worm gear
B. Spiral gear
C. Helical gear
D. Bevel gear
Answer:
D
58. The area of a machine shop
where metal is being melted to
form a new shape is:
A. Welding area
B. Mass production area
C. Foundry area
D. Tool and die
Answer:
C
59. A machine used in shaping
metal by means of abrasive wheel
or removal of metals with an
abrasive is called:
A.Planer
B.Power saw
C.Shaper
D. Grinding machine
Answer:
D
60. The ability of material or
metal to resist being crushed is:
A. Compressive strength
B. Fatigue strength
C. Torsional strength
D. Bending strength
Answer:
A
61. A machining operation
whereby the tool rotates while the
feed is stationary.
A.Shaping
B.Milling
C.Turning
D. Reaming
Answer:
B
62. A machining operation
whereby the tool reciprocates and
the feed is stationary.
A.Reaming
B.Planing
C.Shaping
D. Turning
Answer:
C
63. Which of the following
metals is easy to chisel?
A. Alloy steel
B. Stainless steel
C. Manganese steel
D. Cast iron steel
Answer:
C
64. Ferrous metals contain
relatively large amount of:
A.Carbon
B.Manganese
C.Phosphorous
D. Sulfur
Answer:
A
65. Which of the following is
not a strength property of
metals?
A. Tensile strength
B. Rocking strength
C. Fatigue strength
D. Torsional strength
Answer:
B
66. Which of the following is
not a kind of mandrel?
A. Expansion mandrel
B. Contraction mandrel
C. Taper mandrel
D. Gang mandrel
Answer:
B
67. Which of the following is not
part of lathe machine?
A.Tailstock
B.Headstock
C.Carriage
D. Fan
Answer:
D
68. The range of motor power is kW
of a universal milling machine, max
feed movement 1270 mm lengthwise,
355 mm lateral, 508 mm vertical is:
A. 11 to 15 kW
B. 16 to 21 kW
C. 7.5 to 10 kW
D.22 to 30 kW
Answer:
A
69. The motor power in kW of a
punch press, 50.8 mm hole
diameter, 25.4 mm thickness, for
soft steel is:
A.15 kW
B.21 kW
C.7.5 kW
D. 30 kW
Answer:
C
70. The range of motor power in kW
of a cylindrical grinding machine 600 x
50 mm wheel, 2400 to 4200 mm
center distance is:
A. 11 to 15 kW
B. 16 to 21 kW
C. 7.5 kW
D.22 to 30 kW
Answer:
A
71. The motor power in kW of a
forming or bending machine 1600
mm width, 508 mm head movement
is:
A. 7.5 kW
B. 11 kW
C. 15 Kw
D.22 kW
Answer:
C
72. The range of motor power in
kW of an Engine lathe machine,
average service 1000 mm to 1300
mm swing:
A.11 to 15 kW
B.7.5 to 10 kW
C.16 to 21 kW
D. 22 to 30 kW
Answer:
D
73. A machine which flatten
surfaces on a horizontal, vertical or
angular plane.
A.Shaper
B.Planer
C.Power saw
D. Tool grinder
Answer:
A
74. The ability of metal to withstand
forces thus following a number of
twist.
A. Shear strength
B. Bearing strength
C. Endurance limit
D.Deformation
Answer:
A
75. A property of material which
relates the lateral strain to the
longitudinal strain.
A.Stress
B.Modulus of elasticity
C.Poisson’s ratio
D. Deformation
Answer:
C
76. A total resistance that a
material offers to an applied
load:
A. Friction force
B. Stress
C. Rigidity
D. Compressive stress
Answer:
B
77. A total deformation
measured in the direction of the
line of stress.
A. Strain
B. Elasticity
C. Elongation
D. Contraction
Answer:
A
82. The maximum stress to which
a material may be subjected before
failure occurs.
A.Rupture strength
B.Ultimate strength
C.Yield strength
D. Proportional limit
Answer:
B
83. The maximum stress induced
in a material when subjected to
alternating or repeated loading
without causing failure.
A.Ultimate strength
B.Yield strength
C.Endurance limit
D. Rupture strength
Answer:
C
84. Fluid film desired between two
surfaces having relatively sliding
motion.
A.Lube oil
B.Graphite
C.Packing
D. Lubrication
Answer:
D
85. The ability of metal to
withstand loads without
breaking down.
A. Strength
B. Elasticity
C. Rigidity
D. Deformation
Answer:
C
86. Materials, usually ceramics,
employed where resistance to very
high temperature is required, as for
furnace linings and metal melting pots.
A. Insulators
B. Gaskets
C. Packings
D.Refractories
Answer:
D
87. An alloying element used
principally to produce stainless
steel.
A. Aluminum
B. Brass
C. Bronze
D. Chromium
Answer:
D
88. A coating material used to
produce galvanized iron.
A. Zirconium
B. Zinc
C. Aluminum
D. Chromium
Answer:
B
89. A group of thin steel strips
used for measuring clearances.
A. Feeler gage
B. Tachometer
C. Micrometer
D. Caliper
Answer:
A
90. A hand tool used to measure
tension in bolts.
A. Torque wrench
B. Tachometer
C. Shaver
D. Tensor
Answer:
A
91. Ratio of pitch diameter to
the number of teeth.
A. Diametral pitch
B. Module
C. Contact ratio
D. Helical overlap
Answer:
B
92. A circle the radius of which
is equal to the distance from the
gear axis to the pitch point.
A. Pitch circle
B. Root circle
C. Base circle
D. Outside circle
Answer:
A
93. A circle coinciding with a
tangent to the bottom of the
tooth spaces.
A. Pitch circle
B. Root circle
C. Base circle
D. Outside circle
Answer:
B
94. The method of cold working
by compression.
A. Broaching
B. Lapping
C. Piercing
D. Reaming
Answer:
C
95. A machine tool used to finish
internal and external surfaces by
the use of a cutter called a broach,
which ha series of cutting edges or
teeth.
A.Lathe machine
B.Broaching machine
C.Planer
Answer:
D. Shaper
B
96. A cutting tool which is made to
move slowly while acting on the
work which is revolving on a
horizontal axis.
A.Lathe machine
B.Broaching machine
C.Planer
D. Shaper
Answer:
A
97. A machine tool used to
produce a variety of surfaces by
using a circular type cutter with
multiple teeth.
A.Lathe machine
B.Milling machine
C.Broaching machine
D. Grinding machine
Answer:
B
98. Used in the production of
flat surfaces on pieces too large
or too heavy to hold in a shaper.
A. Planer
B. Shaper
C. Grinder
D. Shaver
Answer:
A
99. Used to machine flat or
curved surfaces with a tool
which moves in a reciprocating
motion.
A. Planer
B. Shaper
C. Grinder
D. Lathe
Answer:
B
100. Which of the following
materials that can wear away a
substance softer than itself?
A. Abrasive
B. Tungsten
C. Carbon
D. Corrosive
Answer:
A
MACHINE ELEMENTS 03
Past ME Board Question
1. A tool with hardened steel
points used for scribing or
laying of distances.
A. Plain scriber
B. Divider
C. A trammel
D. Hermaphrodite
Answer:
B
2. A machine tool used
principally to machine flat or
plane surfaces with a single
pointed tool.
A. Shaper
B. Planer
C. Drill
D. Power saw
Answer:
A
3. A machine tool in which an
abrasive wheel is used as a cutting
tool to obtain a very smooth finish.
A.Broaching machine
B.Planer
C.Tool grinder
D. Milling machine
Answer:
C
4. The process of working
metals by the application of
sudden blows or by steady
pressure.
A. Casting
B. Turning
C. Forging
D. Rolling
Answer:
C
5. The operation of cooling a
heated piece of work, rapidly by
dipping it in water, brine or oil.
A. Quenching
B. Annealing
C. Tempering
D. Normalizing
Answer:
A
6. The softening of metal by heat
treatment and most commonly consist
of heating the metal up to near
molten state and then cooling it very
slowly.
A. Annealing
B. Indexing
C. Knurling
D.Soldering
Answer:
A
7. Fluid film desired between
surfaces relative sliding motion.
A. Lube oil
B. Lubrication
C. Grease
D. Graphite
Answer:
B
8. A kind of gear used to
transmit motion from one shaft
to another shaft at an angle to
the first.
A. Worm gear
B. Bevel gear
C. Helical gear
D. Spur gear
Answer:
B
9. The principal material used
in high production metal
working tools.
A. Hyper-Eutectoid
B. High speed steel
C. Lead
D. High speed carbon
Answer:
B
10. A heavy rotating body which
serves as a reservoir for
absorbing and redistributing
kinetic energy.
A. Flywheel
B. Governor
C. Shaft
D. Puncher
Answer:
A
11. A machine used in shaping
metal by means of an abrasive
wheel or the removal of metals
with an abrasive is called:
A.Planer machine
B.Power saw
C.Shaper machine
D. Grinding machine
Answer:
D
12.Which of the following is
not a part for lathe machine?
A. Tailstock
B. Fan
C. Carriage
D. Headstock
Answer:
B
13. Which of the following is
easy to chisel?
A. Cast iron
B. Alloy steel
C. Cast steel
D. Manganese steel
Answer:
D
14. A machine operation
whereby the tool reciprocates
and the feed is stationary is
called:
A. Shaping
B. Reaming
C. Planning
D. Turning
Answer:
A
15. Which if the following is
not a kind of mandrel?
A. Expansion mandrel
B. Taper mandrel
C. Contraction mandrel
D. Foundry mandrel
Answer:
C
16. The area of the machine
shop where the metal is being
melted to form a new shape.
A. Welding area
B. Mass production area
C. Foundry area
D. Tool and die area
Answer:
C
17. Which of the following is
not used to temper steel?
A. Brine salt bath
B. Oil bath
C. Water bath
D. Steam bath
Answer:
D
18. Which of the following is
not a kind of cast iron?
A. Malleable iron
B. Head iron
C. Gray iron
D. White iron
Answer:
B
19. The kind of center which is being
attached and meshed into the tailstock
spindle which is also static while the
work is rotating.
A. Dead center
B. Live center
C. Focal center
D.Work center
Answer:
A
20. Which of the following is
not part of the headstock?
A. Spindle
B. Anvil
C. Back gear
D. Motor
Answer:
B
21. Which process does not
belong to the group?
A. Vise grip
B. Adjustable wrench
C. Torque wrench
D. Feeler gage
Answer:
D
22. Which does not belong to
the group?
A. Resistance welding
B. Soldering
C. Hardening
D. Brazing
Answer:
C
23. Substances having sufficient
carbon and/or hydrogen for chemical
oxidation to produce exothermally,
worthwhile quantities of heat.
A. Lubrication
B. Graphite
C. Grease
D.Fuels
Answer:
D
24. A device that measures
atmospheric pressure.
A. Piezometer
B. Hydrometer
C. Barometer
D. Odometer
Answer:
C
25. The mass of body per unit
volume.
A. Volume flow rate
B. Density
C. Weight
D. Mass
Answer:
B
26. Subjecting to a substance to a
high temperature below the fusion
point, usually to make it friable.
A.Calcinations
B.Fusion
C.Boiling
D. Superheating
Answer:
A
27. A special metal formed
when two or more metals are
melted together.
A. Monel
B. Alloy
C. Solder
D. Cast alloy
Answer:
B
28. The ability of a moving body
to perform work.
A. Internal energy
B. Potential energy
C. Kinetic energy
D. Flow work
Answer:
C
29. Hardening the surface of ironbased alloys by heating them below
the melting point in contact with a
carbonaceous substance.
A. Carburizing
B. Normalizing
C. Martempering
D.Hardening
Answer:
A
30. Any material that retard the flow
of electricity, used to prevent or
escape of electric current from
conductors.
A. Bricks
B. Insulators
C. Refractories
D.Ceramics
Answer:
B
31. Material, usually ceramics,
employed where resistance to very
high temperature is required, as for
furnace linings and metal melting pots.
A. Bricks
B. Insulators
C. Refractories
D.Ceramics
Answer:
C
32. A device used to prevent
leakage of media.
A. Packing
B. Safety shield
C. Gasket
D. Seals
Answer: D
33. The internal resistance a
material offers to being deformed
and is measured in terms of
applied load.
A.strain
B.elasticity
C.stress
D. resilience
Answer:
C
34. The deformation that results
from a stress and is expressed in
terms of the amount of
deformation per inch.
A.Elongation
B.Strain
C.Poisson’s ratio
D. Elasticity
Answer:
B
35. The ability of the material to
return to its original shape after being
elongated or distorted when the
forces are released.
A. Elasticity
B. Brittleness
C. Plasticity
D.Creep
Answer:
A
36. The last point which a material
may be stretched and still return to its
undeformed condition upon release of
the stress.
A. Rupture limit
B. Elastic limit
C. Proportional limit
D.Ultimate limit
Answer:
B
37. The ratio of stress to strain
within the elastic limit.
A. Creep
B. Modulus of rigidity
C. Modulus of elasticity
D. Poisson’s ratio
Answer:
C
38. The ability of a metal to
withstand forces that causes a
member to twist.
A. Shear strength
B. Tensile strength
C. Bearing strength
D. Torsional strength
Answer:
D
39. The ability of a material to
resist being crushed.
A. Tensile strength
B. Shearing strength
C. Compressive strength
D. Torsion
Answer:
C
40. The ability of metal to stretch,
bend or twist without breaking or
cracking.
A.Elasticity
B.Ductility
C.Brittleness
D. Plasticity
Answer:
B
41. The property of a material
which resist forces action to pull
the material apart.
A.Shear strength
B.Tensile strength
C.Compressive strength
D. Bearing strength
Answer:
B
42. The property of steel which
resist indention or penetration.
A. Hardness
B. Elasticity
C. Ductility
D. None of these
Answer:
A
43. In the color coding of pipe,
the color of a pipeline of air is:
A. Light blue
B. Light orange
C. White
D. Green
Answer:
A
44. In the color coding of pipe,
the color for a pipeline of water
is:
A. Light blue
B. Green
C. Brown
D. Silver grey
Answer:
B
45. In the color coding of pipe,
the color for pipeline of steam
is:
A. Light orange
B. White
C. Silver grey
D. Light blue
Answer:
C
46. The color for a pipeline of
electricity in the color coding of
pipe is:
A.Light orange
B.White
C.Silver grey
D. Light blue
Answer:
A
47. In the color coding of pipe, the
color for a pipeline of
communication is:
A.Light blue
B.White
C.Brown
D. Light orange
Answer:
B
48. The color of pipeline of fuel
oil in the color coding of pipe is:
A. Light blue
B. Brown
C. White
D. Light orange
Answer:
B
49. For high speed application in
the minimum number of teeth in
small sprocket should be:
A.18 to 24
B.26 to 30
C.14 to 18
D. 24 to 28
Answer:
A
50. The good deoxidizer in steel
melting is:
A. Manganese
B. Aluminum
C. Silicon
D. All of these
Answer:
D
51. In majority of machine
members, the damping capacity of
the material should be:
A.Zero
B.High
C.Low
D. Anything
Answer:
B
52. For moderate speed of
mating gears, the ideal ratio of
contact is:
A. 1.35 – 1.55
B. 1.0 – 1.3
C. 1.25 – 1.45
D. 1.25 – 4.0
Answer:
D
53. The crest diameter of a
screw thread is same as:
A. Pitch diameter
B. Minor diameter
C. Major diameter
D. Base diameter
Answer:
C
54. For a high corrosion resistant
stainless steel, what minimum
chromium content is required?
A.8.0%
B.4.5%
C.1.5%
D. 8.5%
Answer:
A
55. At quite low temperatures (say
- 75°C) the notched bar impact
value of steel.
A.Increases significantly
B.Decreases significantly
C.Remain unchanged
D. Depends on heat treatment
Answer:
B
56. In or der to realize the
advantage of fluid friction, it is
essential to have:
A.No oil film
B.Converging oil film
C.Diverging oil film
D. Parallel oil film in bearing
Answer:
D
57. Zero axial thrust is
experienced in:
A. Herringbone gears
B. Helical gears
C. Bevel gears
D. Worm gears
Answer:
A
58. The maximum size of the fillet
weld that can be made in single
pass is:
A.3 mm
B.6 mm
C.7 mm
D. 4 mm
Answer:
B
59. Muntz metal contains:
A. Copper-aluminum
B. Copper-tin
C. Copper-nickel
D. Copper-zinc
Answer:
D
60. Steel balls for ball bearings
are manufactured by:
A. Cold heading
B. Casting
C. Rolling
D. Turning
Answer:
A
61. In general, alloys with high
nickel content retain toughness to
quite low temperature up to:
A.-250°F
B.-360°F
C.-320°F
D. -240°F
Answer:
C
62. Manganese steel standard
designation is SAE ____.
A. 8XXX
B. 10XX
C. 12XX
D. 13XX
Answer:
D
63. A babbit is:
A.A cutectic of iron and iron
phosphide
B.A gadget for measuring volume
C.A measure of magnetic
induction produces in a material
D. Antimony bearing lead or tin
alloy
Answer:
D
64. The minimum thickness of
steel members exposed to weather
and accessible for painting is:
A.4 mm
B.6 mm
C.8 mm
D. 10 mm
Answer:
D
65. In a standard coarse thread
bolt, the stress concentration is
maximum at:
A.All over the surface
B.Top surface
C.Root
D. Flank
Answer:
C
66. Which of the following
ropes are more flexible?
A. 6 to 19
B. 6 to 7
C. 8 by 19
D. 6 by 37
Answer:
D
67. Tools usually used in wood
pattern making in foundry shop.
A. Band saw
B. Saws and chisels
C. Knives and drills
D. Grinder
Answer:
B
68. Type of bolt commonly used
in the construction that is
threaded in both ends.
A. Hex bolt
B. Stud bolt
C. Square threaded bolts
D. Eye bolt
Answer:
B
69. Cast iron flywheels are
commonly designed wit factor of
safety of:
A.9 to 12
B.8 to 11
C.10 to 13
D. 7 to 10
Answer:
C
70. Which of the type of chain
is used in motorcycle?
A. Silent
B. Pintle
C. Bush roller
D. Long
Answer:
C
71. Spiral gears are suitable for
transmitting:
A. Any power
B. Small power
C. Huge power
D. Pulsating power
Answer:
B
72. The type of cam used for
low and moderate speed
engines is generally:
A. Flat
B. Involute
C. Tangent
D. Harmonic
Answer:
D
73. Gears for wrist watches are
generally manufactured by:
A. Molding
B. Stamping
C. Galvanizing
D. Honing
Answer:
B
74. The rated life of a bearing
changes:
A. Inversely as cube of load
B. Directly as load
C. Inversely as square of load
D. Inversely as load
Answer:
A
75. The best material for brake
drum is:
A. Cast iron
B. Steel
C. Aluminum
D. Wrought iron
Answer:
A
76. An elastic body whose
primary function is to deflect
under load.
A. Spring
B. Brake
C. Stopper
D. Clutch
Answer:
A
77. Belt slip may take place
because of:
A. Loose load
B. Heavy belt
C. Driving pulley too small
D. All of the above
Answer:
D
78. Rankine formula is valid up
to slenderness ratio of:
A. 60
B. 80
C. 120
D. 150
Answer:
C
79. In flange coupling the
weakest element should be:
A. Flange
B. Key
C. Bolts
D. Shaft
Answer:
B
80. A flange coupling is:
A. Used for collinear shaft
B. Used for non-collinear shafts
C. Rigid coupling
D. Flexible
Answer:
A
81. Universal coupling is:
A. Used for collinear shafts
B. Used for non-collinear shafts
C. Type of flange coupling
D. Rigid coupling
Answer:
B
82. In powder metallurgy the
process of heating the cold pressed
metal powder is called:
A.Deposition
B.Granulation
C.Sintering
D. Precipitation
Answer:
C
83. Which one is different from
the remaining?
A. Nitriding
B. Cyaniding
C. Electroplating
D. Flame hardening
Answer:
C
84. Splines are used when:
A.The power transmitted is low
B.The power to be transmitted is
high
C.Axial relative motion between
shafts and hub is necessary
D. Flame hardening
Answer:
C
85. Delta iron occurs at
temperature of:
A.Room temperature
B.Above melting point
C.Between 1400°C & 1539°C
D. Between 1000°C & 1400°C
Answer:
C
86. The most important element
that controls the physical
properties of steel is:
A.Carbon
B.Silicon
C.Manganese
D. Tungsten
Answer:
A
87. The process commonly used
for thermo-plastic material is:
A. Diecasting
B. Injection moulding
C. Shell moulding
D. Cold forming
Answer:
B
88. Select the one that has
highest specific gravity.
A. Aluminum
B. Lead
C. Brass
D. High carbon steel
Answer:
B
89. Age-hardening is related
with:
A. Cast iron
B. Stainless steel
C. Duralumin
D. German silver
Answer:
C
90. Foundry crucible is made of:
A. German silver
B. lead
C. Mild steel
D. Graphite
Answer:
D
91. Trimming is a process
associated with:
A.Forging
B.Machining of metals
C.Electroplating
D. Press work
Answer:
A
92. A plug gauge is used to
measure:
A. Taper bores
B. Cylindrical bores
C. Spherical holes
D. Screw threads
Answer:
B
93. In arc welding operations
the current value is decided by:
A. Length of welded portion
B. Voltage across the arc
C. Size of the electrode
D. Thickness of plate
Answer:
C
94. The phenomenon of weld
decay takes place in:
A. Cast iron
B. Brass
C. Bronze
D. Stainless steel
Answer:
D
95. Choose the one that will
have the highest cutting speed.
A. Aluminum
B. Brass
C. Bronze
D. Cast iron
Answer:
A
96. Projection welding is:
A.continuous spot welding process
B.used to make mesh
C.multi-spot welding process
D. used to form
Answer:
C
97. Least shrinkage allowance is
provided in the case of which of
the following:
A.Cast iron
B.Aluminum
C.White cast iron
D. Brass
Answer:
C
98. Dilatometer is used to find
out which property of molding
sand.
A. Permeability
B. Hot strength
C. Fineness
D. Moisture content
Answer:
99. Hastalloy contains:
A. Cpper
B. Nickel and copper
C. Copper and aluminum
D. Nickel and molybdenum
Answer:
D
100. The maximum
hardenability of any steel
depends on:
A. The carbon content
B. The chemical composition
C. The grain size
D. The alloying elements
present
Answer:
A
MACHINE ELEMENTS 04
Past ME Board Question
1. The hardness of steel
increases if it contains:
A. Martensite
B. Pearlite
C. Austenite
D. All of the above
Answer:
A
2. How do you call steel with
0.8% carbon and 100% pearlite?
A. Austenite
B. Solidus
C. Hyper-eutectoid
D. Eutectoid
Answer:
D
3. What is the range of the tensile
strength of common varieties of
cast iron?
A.40-60 Mpa
B.150-180 Mpa
C.840-500 Mpa
D. 1500-1650 Mpa
Answer:
C
4. Fatigue failure occurs when a
part is subjected to:
A. Compressive stress
B. Tensile stress
C. Torsional stress
D. Fluctuating stress
Answer: D
5. Paramagnetic alpha iron
changes to gamma iron at what
temperature?
A.440°C
B.910°C
C.970°C
D. 1639°C
Answer: B
6. The diameter of the washer is
generally:
A. Equal to the diameter of the bolt
B. Slightly more than the diameter of
the bolt
C. Slightly less than the diameter of the
bolt
D. Of any size that suits the application
Answer: B
7. The compression members tend
to buckle in the direction of:
A.Axis of load
B.Minimum cross-section
C.Least radius of gyration
D. Perpendicular to the axis of the
load
Answer:
C
8. A kinematic chain needs a
minimum:
A.2 links and 2 turning pairs
B.3 links and turning pairs
C.4 links and 4 turning pairs
D. 3 links and 2 turning pairs
Answer: C
9. Which of the following pairs is
formed if shaft is revolving in a
bearing?
A.Lower pair
B.Turning pair
C.Sliding pair
D. Cylindrical pair
Answer: A
10. How many lines are there in
a pantograph?
A. 3
B. 4
C. 5
D. 6
Answer: B
11. A pantograph is mechanism
having:
A. Lower pairs
B. Rolling pairs
C. Spherical pairs
D. Higher pairs
Answer: A
12. Which of the following describes the
“slip” in belt down?
A. Loss in power
B. Difference between the angular
velocities of two pulleys
C. Difference between linear speed of
the rim
D. Difference between the linear speed
of the rim of the pulley and the belt on
it
Answer:
D
13. Which of the following is the
orientation of the axes of the two
shafts in cross helical worm?
A.Parallel
B.Non-parallel
C.Intersecting
D. Non-parallel and nonintersecting
Answer: D
14. In case of gears the
addendum is given by:
A. One module
B. 2.16 x module
C. 1.57 x module
D. 1.25/ module
Answer: A
15. How do you call a cam where
in the follower reciprocates or
oscillates in a plane parallel to its
axis?
A.Circular cam
B.Reciprocating cam
C.Cylindrical cam
D. Oscillating cam
Answer: C
16. How are gears for watches
generally manufactured?
A.Die casting
B.Machining on hobber
C.Power metallurgy process
D. Stamping
Answer: D
17. Rope break dynamometer uses
what?
A.Oil as lubricant
B.No lubricant
C.Grease as lubricant
D. Water as lubricant
Answer: B
18. In testing a material for
endurance strength, it is subjected
to:
A.Completely reversed load
B. Static load
C.Impact load
D. Dynamic load
Answer: A
19. Which of the following could
be the effect of cold working?
A.Increases the fatigue strength
B.Decreases the fatigue strength
C.Has no influence on fatigue
strength
D. None of these
Answer: A
20. Coaxing is the procedure of
increasing:
A. Metal strength
B. Metal hardness by surface
treatment
C. Metal resistance to corrosion by
coating
D.Fatigue limit by overstressing the
metal by successively increasing
Answer: D
loadings
21. Up to what percent thickness
of plate, edge preparation for
welding is not needed?
A.2 mm
B.4 mm
C.8 mm
D. 12 mm
Answer: B
22. Arc blow takes place in:
A.Gas welding
B.Arc welding when straight
polarity is used
C.Arc welding when reversed
polarity is used
D. Welding stainless steel
Answer: D
23. What is the function of clutch in
the machine tool?
A. Alignment of drive
B. Lowering of drive
C. To insure that two shafts line up at
high speed
D.To connect shaft so that the driven
shaft will rotate with the driving shaft
and to disconnect them all
Answer: D
24. The height of tooth above the
pitch circle or the radial distance
between pitch circle and top land
of the tooth.
A.Addendum
B.Dedendum
C.Top rooth
D. Top land
Answer: A
25. How do you call the distance of
the tooth which is equal to the
sum of the addendum and
dedendum?
A.Full depth
B.Working depth
C.Whole depth
D. Pitch
Answer: C
26. Which of the following stresses
that is independent of loads?
A.Shear stress
B.Residual stress
C.Design stress
D. Yield stress
Answer: B
27. Which of the following is not
used to resemble the shape of tool
bit?
A.Thread cutting
B.Center cutting
C.Square nose
D. Round nose
Answer:
B
28. Which is the recommended
best cutting angle of drill for work
on steel or cast iron?
A.39 degrees
B.49 degrees
C.59 degrees
D. 29 degrees
Answer: C
29. Copper and most of its alloys
can be hardened by which of the
following?
A.Cold working
B.Soaking
C.Patenting
D. Case hardening
Answer: A
30. Types of V-belts to use in a
driving pulley with speed of
360rpm and transmitting 5Hp.
A.Type A belts
B.Type B belts
C.Type C belts
D. Type D belts
Answer: B
31. Which of the following is not
an angle measuring device?
A.Bevel protector
B.Sine bar
C.Combination square
D. Angle iron
Answer: D
32. The mould for casting ferrous
materials in continuous casting
process is made of what material?
A.Copper
B.Medium carbon steel
C.High carbon steel
D. Low carbon steel
Answer: A
33. Clutch slippage while clutch is
engaged is especially noticeable:
A.During idling
B.A low speed
C.During acceleration
D. During braking
Answer: C
34. In general, to engage securely
and prevent dragging what is the
clearance between release bearing
and release collar in the clutch?
A.2-3 mm
B.4-5 mm
C.6-7 mm
D. 8-9 mm
Answer: A
35. Piston compression rings are
made of what material?
A.Steel
B.Bronze
C.Aluminum
D. Cast iron
Answer: D
36. What is the usual value of helix
angle of a drill?
A.120 degrees
B.110 degrees
C.60 degrees
D. 30 degrees
Answer: D
37. What is meant by drossing?
A.A method of cleaning the casting
B.An inspection method for
castings
C.A method of deoxidation of
molten metal
D. The formation of oxides on the
molten metal surfaces
Answer:
D
38. If the first digit is AISI and SAE
designations is one (1), then, it
indicates what?
A.Carbon steels
B.Nickel steels
C.Molybdenum steels
D. Chromium steels
Answer: A
39. Which of the following where
the gear tooth vernier is used to
measure?
A.Module
B.Gear tooth profile
C.Gear tooth thickness of gear
tooth
D. Pitch line thickness of gear
Answer: B
tooth
40. A cold chisel is made of what?
A.Mild steel
B.German silver
C.High carbon steel
D. Cast iron
Answer: C
41. It is the ability of a material to
absorb energy when deformed
elastically and to return it when
unloaded.
A.Creep
B.Fatigue strength
C.Resilience
D. Toughness
Answer:
C
42. Which of the following cams
where the follower reciprocates or
oscillates in a plane parallel to the
axis of rotation?
A.Cam curves
B.Radial cam
C.Cylindrical cam
D. Tangential cam
Answer: C
43. Which of the following cams
where the follower reciprocates or
oscillates in a plane perpendicular
to the axis of rotation?
A.Tangential cam
B.Cam curves
C.Radial cam
D. Cylindrical cam
Answer: C
44. During tensile stress test,
which of the following stressstrain curve(s) fits for a glass rod?
A.A straight line
B.A parabola
C.A irregular curve
D. A sudden break
Answer: D
45. In case of a knuckle joint, the
pin is most likely to fall in:
A.Shear
B.Tension
C.Compression
D. Double shear
Answer: D
46. A single ply leather belt
running at a belt velocity of 300 ft/
min is likely to transmit per inch of
width:
A.2.5 Hp
B.3.0 Hp
C.4.0 Hp
D. 5.0 Hp
Answer: C
47. At what temperature range
where ferromagnetic alpha iron
exists:
A.Below 723°C
B.700-910°C
C.1000-1440°C
D. Above 1539°C
Answer: A
48. How do you call a body having
identical properties all over?
A.Heterogeneous
B.Homogenous
C.Elastic
D. Ductile
Answer: B
49. How is the material described
if it recovers its original
dimensions when the load is
removed?
A.Elastic
B.Plastic
C.Brittle
D. Malleable
Answer: A
50. What is the percentage of
carbon in Eutectoid steel?
A.0.02%
B.0.30 %
C.0.63 %
D. 0.80 %
Answer: D
51. The presence of sulphur in pig
iron makes:
A.The casting unsound
B.It brittle
C.It hard
D. It is easy machinable
Answer: A
52. What is the effect of alloying
zinc to copper?
A.Increase hardness
B.Impart free-machining
properties
C.Improve hardness and strength
D. Increases strength and ductility
(if added up to 10-30%)
Answer: D
53. The imperfection in the
crystal structure of metal is:
A. Impurity
B. Fracture slip
C. Slip
D. Dislocation
Answer: D
54. When is the pressure release in
resistance welding?
A.After the weld colds
B.During heating period
C.After completion of current
D. Just at the time of passing the
current
Answer: A
55. If t is the thickness of sheet to
be spot welded, then electrode tip
diameter is equal to ____.
A.T2
B.S sq. rt. Of t
C.Sq. rt. Of t
D. 1.5 sq. rt. Of t
Answer: B
56. A twist drill is specified by
which of the following?
A.Its shank and diameter
B.Shank, material and flute size
C.Its diameter and lip angle
D. Shank, material and diameter
Answer: D
57. Which of the following is used
to measure the clearance between
the value and tappet of an
automobile engine?
A.Shape gauge
B.Slip gauge
C.Feeler gauge
D. Vernier gauge
Answer: C
58. Speedometer drive is
generally taken from:
A. Gear box
B. Fan belt
C. Flywheel
D. Frontwheel
Answer: D
59. What is the usual percentage
of cut on the return stroke of
hacksaw blade?
A.0
B.5
C.7
D. 9
Answer:
A
60. Which of the following will
best describe the sunk key?
A.The keyway is helical along shaft
B.The keyway is cut in shaft only
C.The keyway is cut in hub only
D. The key is cut in both shaft and
hub
Answer: D
61. Which of the following where
turn buckle has?
A.Left hand threads on one end
and right hand threads on other
end
B.Right hand threads on both ends
C.Left hand threads on both ends
D. No thread
Answer: A
62. Which of the following is the
best process for butt welding of
two plates each of which is 25 mm
thick?
A.Electro slag welding
B.Gas welding
C.Submerged arc welding
D. Steam welding
Answer: A
63. Which of the following statement(s)
is correct for an oilless bearing:
A. The oil film is maintained by
supplying oil under pressure
B. The oil film pressure is produced only
by rotation of the journal
C. Do not need external supply of
lubricant
D. Grease is needed to be applied after
some intervals
Answer: C
64. The working load P for a chain for
crane applications is expressed in
terms of diameter of link “d” in cm as
follows:
A. P=1.5d2
B. P=25d2
C. P=50d2
D.P=500d2
Answer: D
65. The column splice is used for
increasing:
A.Cross-sectional area of the
column
B.Length of the column
C.Strength of the column
D. All of the above
Answer: B
Answer: B
66. At what temperature that
Gamma iron exist?
A.Between 910°C and 1400°C
B.Between 1400°C and 1539°C
C.Near melting point
D. Room temperature
Answer: A
67. The behavior of metals where in
strength of a metal is increased and
the ductility is decreased on heating at
a relatively low temperature after cold
working is called:
A. Clustering
B. Twinning
C. Screw dislocation
D.Strain aging
Answer: D
68. Which of the following
statement(s) is correct in “carbon steel
castings”?
A. The percentage carbon is less than
1.7%
B. The percentage carbon is between
1.7% to 2%
C. The percentage for alloying
elements is controlled
Answer: A
D.None of the above
69. Aluminum alloys are for
pressure die casting:
A.Must not be free from hot
surfaces
B.Must have iron as one of the
constituents
C.Must not posses considerable
fluidity
Answer: C
D. Must be light
70. Which of the following is
maximum in 18-4-1 high speed
steel?
A.Tungsten
B.Chromium
C.Argon
D. Iron
Answer: D
71. Super conductors:
A. Exist at temperature below
10K
B. Are dense metals without
voids
C. Are non-metallic substance
D. Are the purest forms of
metals
Answer: A
72. When the large number of
components are turned and parted
off from a bar, the chuck generally
used is:
A.Two jaw chuck
B.Four jaw chuck
C.Collet chuck
D. Magnetic chuck
Answer: D
73. Cutting speed for some
materials are us under which one
of the following could be cutting
speed for brass?
A.30 m/min
B.40 m/min
C.80 m/min
D. 50 m/min
Answer: B
Answer: D
75. The draft allowance on
metallic pattern as compared
wooden ones is:
A.More
B.Same
C.Less
D. More or less depending on size
Answer: C
76. Arc metal patterns are used for:
A.Precision castings
B.Small castings
C.Large castings
D. Large scale production of
castings
Answer: D
77. What tool is used in
foundry for repairing the mould?
A. Swab
B. Gagger
C. Bellows
D. Rammer
Answer: A
78. What tool is used in foundry
for smoothening and cleaning out
depression in the mould?
A.Swab
B.Gagger
C.Bellows
D. Rammer
Answer: C
79. Which of the following does
not have to be lubricated when
drilling?
A.Brass
B.Steel
C.Monel
D. Mild steel
Answer: A
80. The tool used in precision work
to smooth or enlarge holes is called
a:
A.Round out
B.Drift pin
C.Reamer
D. Protactor
Answer: C
81. When measuring a drill for
size, measure across the:
A. Margins
B. Flites
C. Shank
D. Point
Answer: A
82. How do you call the tool
used for cleaning files?
A. File cleaner
B. File card
C. File oilstone
D. Scraper
Answer: B
83. The melting point of babitt
is approximately:
A. 1000˚F
B. 650˚F
C. 750˚F
D. 500˚F
Answer: B
84. How is tubing measured?
A. Inside diameter
B. Outside diameter
C. Thickness of wall
D. Wire gage
Answer: B
85. Which of the following metals
will respond to heat treatment?
A.Cast iron
B.Wrought iron
C.Medium carbon steel
D. Low carbon steel
Answer: C
86. The ability of metal to
withstand loads without breaking
down is:
A.Stress
B.Strength
C.Strain
D. Elasticity
Answer: B
87. Which of the following
metals is non-magnetic?
A. Cast iron
B. Alloy steel
C. Cast steel
D. Manganese steel
Answer: D
88. A machining operation
whereby the tool reciprocates and
the feed is stationary.
A.Planing
B.Shaping
C.Turning
D. Reaming
Answer: B
89. Which of the following is not a
tap used for cutting threads in
holes?
A.Tapping tap
B.Plug tap
C.Taper tap
D. Bottoming tap
Answer: A
90. Herring bone gears are gears
which:
A.Do not operate the parallel shafts
B.Have a line contact between the
teeth
C.Consists of two left handed
helical gears
D. Tend to produce thrust on the
shafts
Answer: B
91. Which of the following statements is
true for the internal stresses existing in a
welded connection?
A. Internal stresses are not relieved by heat
treatment
B. Internal stresses are not relieved when
weld is peened
C. Internal stresses may be relieved when the
weld is peened
D. Internal stresses are relieved by x-ray
analysis
Answer: B
92. Stainless steel is obtained
principally by the use of which of
the alloying elements?
A.Chromium
B.Nickel
C.Carbon
D. Tungsten
Answer: A
93. Galvanized iron is a term
referring to iron coated with:
A. Tin
B. Zinc
C. Magnesium
D. Aluminum
Answer: B
94. Which of the following is not a
common term relating to the
classification of fits?
A.Tunking
B.Snug
C.Medium force fit
D. Bound
Answer: D
95. In usual spur gearing, which of the
following statement(s) is correct?
A. Pitch circle and base circle are the
same
B. Working depth includes the
clearance
C. Tooth outline are usually involute
curves
D.Tooth outline are usually cycloidal
Answer: C
curves
96. In general, the design stress and
factor of safety are related as follows:
A. Design stress = ultimate stress times
factor of safety
B. Design stress = ultimate stress divided
by factor of safety
C. Factor of safety = design stress
divided by ultimate stress
D. Ultimate stress = factor of safety
divided by design stress
Answer: B
97. In usual spur gearing, the:
A.Pitch circle and base circle are
the same
B.Working depth includes
clearance
C.Tooth outline are always
cycloidal curves
D. Tooth outline are usually
Answer: D
involute curves
98. Which of the following is not
the other name of circumferential
stress for thin walled cylinders?
A.Hoop stress
B.Girth stress
C.Tangential stress
D. Longitudinal stress
Answer: D
99. How do you call the ratio of
the volumetric stress to volumetric
strain?
A.Modulus in shear
B.Stress to strain ratio
C.Volumetric ratio
D. Bulk modulus
Answer: D
100. Hearing bone gears are gears
which:
A.Do not operate parallel shafts
B.Have a line of contact between
the teeth
C.Tend to produce and thrust on
the shafts
D. Consists of two left handed
Answer: B
helical gears
MACHINE ELEMENTS 05
Past ME Board Question
1. The ability of metals to stand
loads without breaking down
A.Strain
B.Stress
C.Elasticity
D. Strength
Answer:
C
2. Which of the following is not a
classification of iron ore:
A.Siderite
B.Hermatite
C.Sulfurite
D. Magnetite
Answer:
C
3. Ferrous metals contain a
relatively large amount of:
A. Manganese
B. Carbon
C. Sulfur
D. Phosphorus
Answer:
B
4. Which of the following metal
is easy to chisel?
A. Alloy steel
B. Manganese steel
C. Stainless steel
D. Cast iron
Answer: B
5. The ability of material or metal
to resist being crushed is:
A.Fatigue strength
B.Bending strength
C.Torsional strength
D. Compressive strength
Answer: D
6. Which of the following is not
part of the headstock?
A. Anvil
B. Spindle
C. Motor
D. Back pressure
Answer: A
7. Which of the following is not
used to temper steel?
A.Oil bath
B.Brine/salt bath
C.Steam bath
D. Water bath
Answer:
C
8. Which of the following is not a
kind of cast iron.
A.Gray iron
B.White iron
C.Malleable iron
D. Lead iron
Answer: D
9. A machinery operation whereby
the tool rotates while the feed
is stationary.
A.Shaping
B.Milling
C.Turning
D. Reaming
Answer: B
10. What process does not
belong to the group?
A. Brazing
B. Soldering
C. Hardening
D. Resistance welding
Answer: C
11. Which tool does not belong to
the group?
A.Vice grip
B.Feeler gage
C.Torque wrench
D. Adjustable wrench
Answer: B
12. Which of the following
metals is non-magnetic?
A. Manganese steel
B.Cast steel
C.Alloy steel
D. Adjustable steel
Answer:
B
13. One important skill that
operators of the machine tools
must have is an understanding of
measurement which demands:
A.Speed
B.Precision
C.Sociability
D. Neatness
Answer: B
14. Which of the following is not a
part of a lathe machine?
A.Fan
B.Carriage
C.Headstock
D. Tailstock
Answer: A
15. The machine which can flatten
surface on a horizontal,
vertical or angular plane is:
A.Drilling machine
B.Shaper machine
C.Power saw
D. Lathe machine
Answer: B
16. Which of the following is not
the work of a machinist?
A. Reboring
B.Overhauling
C.Grinding
D. Boring
Answer: B
17. The area of the machine shop
whose metal is being
melted to form a new shape is the:
A.Foundry area
B.Tool and die
C.Welding area
D. Mass production area
Answer: A
18. A machine used in testing steel
generally strike the
specimen with an energy from 220
to 226 ft-lb
A.Izod test
B.Charpy test
C.Rockwell test
D. Test blocks
Answer: B
19. An iron in which most of the
carbon is chemically
combined with the iron:
A.Cast iron
B.Gray iron
C.White iron
D. Malleable iron
Answer: C
20. Through how many degrees must
an involute can turnin order to raise
its follower 3 inches if the diameter of
the base circle is 5 inches.
A. 58.7 degrees
B. 180 degrees
C. 64.4 degrees
D.68.79 degrees
Answer: B
21. The space between the
adjacent teeth:
A. Tooth
B. Flank
C. Backlash
D. Width
Answer: D
22. An iron has physical properties
closely resembling
those of mild steel:
A.Malleable cast iron
B.Malleable iron
C.White iron
D. Gray iron
Answer: A
23. Gears used to transmit power
between shafts axis of
which it intersect:
A.Spur gears
B.Bevel gears
C.Helical gears
D. Straight gears
Answer: B
24. An important accessories of
milling machines:
A. Milling machine vise
B.Cutters
C.Ram
D. Vertical milling attachment
Answer: B
25. They are usually the steel or
steel casting:
A.Mild steel
B.Carbon steel
C.Fire box steel
D. Drop-forge-dies
Answer: B
26. The cheapest and the most
abundant engineering
material.
A.Aluminum
B.Steel
C.Cast iron
D. Babbits
Answer: C
27. Milling machine accessories are
used to hold milling
cutter in the milling machine:
A.Spindle-nose tooling
B.Milling machine vise
C.Vertical milling attachment
D. Milling machine arbors
Answer:
D
28. The size of an equal-leg length
fillet weld shall be
based on the length of the largest:
A.Isosceles right triangle
B.Square
C.Right triangle
D. Rectangle
Answer: A
29. If gears cannot connect parallel
shafts, they are called:
A.Cycloidal gears
B.Helical gears
C.Spur gears
D. Toothed gears
Answer: A
30. The path traced by a point moving
at a fixed distance
From an axis and with a uniform
motion to the axis and
A point moving such a path:
A. Helical motion
B. Spherical motion
C. Translational
D.Path of a point
Answer: A
31. The maximum stress which is
reached during a tension
Test:
A. Stress
B.Elasticity
C.Strain
D. Tensile strength
Answer: D
32. The frustums of two cones are
used in a manner to
Permit a variation of velocity ratio
between two parallel shafts:
A.Evans friction cones
B.Bevel cones
C.Spherical cones
D. Friction gearing
Answer: A
33. Weld-metal impact specimen
shall be taken across the Weld
with one face substantially parallel
to and within:
A.¾”
B.1/32”
C.¼”
D. 1/16”
Answer: C
34. An alloy of tin, copper,
antimony, sometimes lead
A. Gold
B. Babbit
C. Aluminum
D. Cast iron
Answer: B
35. A weld place in a groove
between two abutting
Members:
A.Full-fillet weld
B.Tack weld
C.Butt weld
D. Fillet weld
Answer: C
36. A weld of approximately triangular
cross-section that
Join two surfaces at approximately
right angles as in lap joint,Tee joint,
corner joint:
A. Single welded lap joint
B. Fillet weld
C. Tack weld
D.Butt weld
Answer: B
37. A corrosion occurs within or
adjacent to a crevice
Formed by contact with another
piece of the same or
Another metal:
A.Pitting
B.Galvanic
C.Erosion
D. Crevice
Answer:
B
38. Wheels are sometimes used for
the transmission of
High power when an approximately
constant velocity
Ratio is desired:
A. Bevel cones
B. Friction gearing
C. Spur friction wheels
D.Evans friction wheels
Answer: C
39. Gearing in which motion or
power that is transmitted
Depends upon the friction
between the surfaces in contact:
A.Bevel gears
B.Spur friction wheels
C.Evans friction wheels
D. Friction gearing
Answer: C
40. An alloy of tin, copper,
antimony, or sometimes lead:
A.Gold
B.Babbit
C.Aluminum
D. Cast iron
Answer: B
41. A weld place in a groove
between two abutting
Members:
A.Full-fillet weld
B.Tack weld
C.Butt weld
D. Fillet weld
Answer:
C
42. A weld of approximately triangular
cross-section that
join two surfaces at approximately
right triangles as in
lap joint, tee-joint, corner joint
A. Single welded lap joint
B. Fillet weld
C. Tack weld
D.Butt weld
Answer: B
43. A corrosion occurs within or
adjacent to a crevice formedBy
contact with another piece of the
same or another metal:
A.Pitting
B.Galvanic
C.Erosion
D. Crevice
Answer: B
44. Wheels are sometimes used for
the transmission of
High power when an approximately
constant velocity
Ratio is desired:
A. Bevel cones
B. Friction gearing
C. Spur friction wheels
D.Evans friction wheels
Answer: C
45. Wheels are sometimes used for
the transmission of
High power when an approximately
constant velocity
Ratio is desired:
A. Bevel cones
B. Friction gearing
C. Spur friction wheels
D.Evans friction wheels
Answer: D
46. A bevel gears of the same size
mounted on a shaft at
90 degrees:
A.Crown gears
B.Spur gears
C.Angular gears
D. Miter gears
Answer: D
47. A fillet weld whose size is equal
to the thickness of the
Thinner joint member:
A.Butt joint
B.Butt weld
C.Tack weld
D. Full-fillet weld
Answer: D
48. The ratio of stress to the
corresponding strain below
The proportional limit:
A.Stress- strain diagram
B.Gage method
C.Modulus of elasticity
D. Tensile strength
Answer: C
49. The shearing strain of a block of
metal, 3 inches high
is subject to a shearing high force which
distorts the
top surface through a distance of 0.0036
inch:
A. 0.0015 rad
B. 0.008 rad
C. 0.0010 rad
D. 0.0012 rad
Answer: D
50. Determine the number of teeth in
a driver of two spur
Gears mesh which has a velocity ratio
of 0.75. The driven gear has 36 teeth:
A. 50
B. 46
C. 26
D.48
Answer: D
51. Within the elastic limit, the
stress is proportional
to the strain:
A.Hooke’s law
B.Modolus of elasticity
C.Offset ratio
D. Buckingham’s principles
Answer: A
52. The corrosion of iron or
iron-base-alloys:
A. Rusting
B. Crazing
C. Chalking
D. Fritting
Answer: A
53. Steel containing large amounts
of mild nickel and chromium:
A.Carbon steel
B.Stainless steel
C.Alloy steel
D. Cast steel
Answer: B
54. It refers to any layer or deposit
of extraneous material
on the heat-transfer-surface.
A.Low line
B.Pressure drop
C.Fouling
D. Scaling
Answer: C
55. The total amount of permanent
extension of the gage Length measured
after the specimen has fractured and is
expressed as percentage increase of the
original gage Length:
A. Elongation
B. Strain
C. Stress
D. Elastic limit
Answer: A
56. It is used to enable milling
machine to take climb
milling cuts:
A.Helical driving mechanism
B.Spindle
C. Read out
D. Backlash eliminator
Answer: A
57. A weld made to hold the parts
of a weldment in proper
alignment until the final welds are
made:
A.Butt weld
B.Tack weld
C.Fillet weld
D. Full-fillet weld
Answer: B
58. The change in length per
unit original length is:
A. Strain
B. Stress
C. Deformation
D. Elastic modulus
Answer: A
59. The temperature above which
the alloy is liquid
And will run:
A.Melting point
B.Fow point
C.Pour point
D. Liquids
Answer:
A
60. A corn formed by elements
which are perpendicular
To the elements of the pitch cone
at the large end:
A.Cone distance
B.Back cone
C.Root cone
D. Cone center
Answer: B
61. A machine used for the testing
of very thin steel or
Surface layers:
A.Charpy test
B.Izod test
C.Description test
D. Rockwell test
Answer: C
62. A gear is on in which angle is
90 degrees that is the
Pitch cone has become a plane:
A.Crown gear
B.Angular gear
C.Miter gear
D. Spiral gear
Answer: A
63. The deterioration of organic
coating characterized as
Completely:
A.Chailking
B.Rusting
C.Chocking
D. Fritting
Answer: C
64. Is a form of correction that
develop on a highly
Localized areas on a metal surface:
A.Crevice
B.Erosion
C.Galvanic
D. Spitting
Answer: D
65. Test is designed primarily for
application to electricWelded tubing for detection of lack of
penetration
Or overlaps resulting from flash
removal in the weld.
A. Butt weld
B. Paste
C. Lap weld
D. Double butt weld
Answer: C
66. Have the same thermal and
minimum film thickness
Limitation as sleeve bearing.
A.Ball bearing
B.Roller bearing
C.Thrust bearing
D. Oil bearing
Answer: C
67. An oil storage roof formed to
approximately the surface
Of the right cone, supported only
at its periphery:
A.Self-supporting umbrella roof
B.Self-supporting dome roof
C.Supported cone roof
D. Self-supporting cone roof
Answer: A
68. Test sometimes referred to
as an upsetting test:
A. Bend
B. Flaring
C. Flange
D. Crush
Answer: A
69. What load P which cause a
total deformation of 0.036
Inch of a steel rock which has a
cross-section area of
4 in2 and a length of 6 ft.
A.55,000 lb
B.40,000 lb
C.60,000 lb
D. 50,000 lb
Answer: C
70. An oil storage tank roof formed
to approximately spherical
Surface, supported only at its
periphery:
A.Self-supporting umbrella roof
B.Self-supporting cone roof
C.Self-supporting
D. Supported cone roof
Answer: A
71. The unit of deformation is
called:
A. Torsion
B. Strain
C. Stress
D. Shear
Answer: B
72. A circle bounding the bottom
of the teeth:
A.Addendum circle
B.Addendum cylinder
C.Pitch circle
D. Dedendum circle
Answer: D
73. A 3” diameter short shaft carrying
2 pulleys close to
The bearings transmit how much
horsepower if the shafts makes 280
rpm.
A. 199 Hp
B. 198 Hp
C. 200 Hp
D.210 Hp
Answer: A
74. A cylindrical tank with 10 in.
inside diameter contains Oxygen
gas at 2500 psi. Calculate the
required wall thickness in (mm)
under stress of 28,000 psi.
A.11.44 mm
B.11.34 mm
C.10.6 mm
Answer: B
D. 10.3 mm
75. The minimum clearance
allowed for meshing spur gears
With a circular pitch of 0.1571 and
diametral pitch of 20.The spur gear
have 25 teeth.
A.0.007855
B.0.007558
C.0.008578
Answer: A
D. 0.007585
76. SAE steel that responds to
heat treatment:
A. SAE 1060
B. SAE 1117
C. SAE 1030
D. SAE 1020
Answer: B
77. Which of the following is the
differential of the shear
equation:
A.Bending moment
B.Load of the beam
C.Tensile strength of the beam
D. Slope of the beam
Answer: B
78. Which of the following materials
to be utilized to reduce
Cost in the manufacturing of large
worm gears?
A. Alloyed aluminum
B. Bronze rim with cast iron spider
C. Cast iron rim with bronze spider
D.All of these
Answer: B
79. It is the hardening treatment
whereby a cast metal is being Heated to
a very high temperature then suddenly
subjected to rapid cooling to improve
hardenability or wear resistance Is
called:
A. Normalizing
B. Tempering
C. Annealing
D. Quenching
Answer: D
80. Determine the estimated
weight of an A-36 steel plates
Size 3/16 x 6’ x 20’.
A. 919 lbs
B. 1012 lbs
C. 829 lbs
D. 735 lbs
Answer: A
81. The length of arc between
the two sides of a gear tooth on
The pitch circle:
A. Circular thickness
B. Axial plane
C. Helix angle
D. Chordal curves
Answer: A
82. Split pulley or pulley made of
separate section bolted
Together at the rim, the maximum
speed should be
Limited to about_____% of the
maximum speed of solid Pulley.
A. 65 to 75%
B. 45 to 50%
C. 55 to 60%
D. 80 to 90%
Answer: C
83. Killed steel is very much
associated with:
A. Manganese
B. Sulphur
C. Phosphorus
D. Silicon
Answer: D
84. Determine the estimated
weight of an A-36 steel plate
Of size 1/2x4x8.
A.280 kg
B.332 kg
C.301 kg
D. 297 kg
Answer: D
85. A type of welding whereby a wire or
powder from the nozzle Of a spray gun is
fused by a gas flame, arc or plasma jet and
The molten particles are projected in a
form of a spray by means of compressed
air or gas.
A. Electro-slug building
B. Electro-beam welding
C. Plasma-arc welding
D. Metal spray welding
Answer: D
86. Heating of metal above the critical
temperature and
Then cooling slowly usually in the
furnace to reduce the Hardness and
improve the machinability is called:
A. normalizing
B. annealing
C. tempering
D.quenching
Answer: B
87. Accident prevention is:
A. An association of employers,
organization &
Individuals
B. The foreman’s responsibility just as
much as
Production
C. The responsibility of top
management
Answer:
B
D.A job of safety director
88. Major component of bronze
casting:
A. Copper
B. Manganese
C. Zinc
D. Lead
Answer: A
89. Commonly utilized/cheapest
shaft material available
In the market with carbon content
of 0.28 to 0.34%
A.SAE 4132
B.SAE 4320
C.SAE 1030
D. SAE 4130
Answer: C
90. Alloy steel known for its resistance to
corrosion,
Abrasion and wear that is usually ideal for
mill grinding of ore in cement and
concentrator application. It is usually
combined with molybdenum to increase
the Depth hardening:
A. Manganese chromium steel
B. Chromium-moly steel
C. Chrome-nickel-moly steel
D. Manganese-moly steel
Answer: B
91. Split pulley or pulley made of
separate section bolted Together at
the rim, the maximum speed should
be Limited to about_____% of the
maximum speed of solid Pulley.
A. 65 to 75%
B. 45 to 50%
C. 55 to 60%
D.80 to 90%
Answer: C
92. Major component of bronze
casting is:
A. Copper
B. Manganese
C. Zinc
D. Lead
Answer: A
93. Galvanized steel plate is:
A. Aluminum
B. Tin
C. Zinc
D. Manganese
Answer: C
94. What treatment process can cast
steel materials
Of high chrome, high manganese, etc.
, type steel be
Subjected for the purpose of
machining process?
A. Annealing
B. Tempering
C. Normalizing
D. Quenching
Answer: A
95. Cast alloy steel for very high
temperature application:
A.Nylon
B.Seal
C.Teflon
D. Packing
Answer: D
96. Flexible material used to steal
pressurized fluids,
Normally under dynamic condition:
A.Nylon
B.Seal
C.Teflon
D. Packing
Answer: D
97. A type of gear tooth cut inside
a cylinder or ring:
A.Rack gear
B.Ring gear
C.Miter ring
D. Internal gear
Answer: D
98. It has molybdenum alloy
except:
A. SAE 43xx
B. SAE 41xx
C. SAE 6xxx
D. SAE 5xxx
Answer: D
99. To prevent leakage in
dynamic steal:
A. Gasket
B. Seals
C. Felts
D. Packing
Answer: D
100. Which of the following
elements when large quantity
Is harmful to the ferrous metal?
A.Sulfur
B.Silicon
C.Zinc
D. Aluminum
Answer: A
MACHINE ELEMENTS 06
Past ME Board Question
1. A metal characteristic that
withstands forces that causes
twisting.
A.Torsional strength
B.Modulus of elasticity
C.Twisting moment
D. Elasticity
Answer:
A
2. Fillet radius in machine parts is
usually introduced to:
A.Improve the look of the parts
B.Reduce concentration of stress
and extend life of the parts
C.Avoid obstruction
D. Necessary to lessen casting
weight
Answer:
B
3. Type of bolt commonly used in
the construction that is threaded
in both ends.
A.Stud bolt
B.Acme threaded bolts
C.Square threaded bolts
D. Hex bolts
Answer:
A
4. Hydrostatic bearing is one which:
A.The lube oil is supplied under
pressure
B.Lube oil is not pressurized
C.There is no lube oil
D. Bearing is slightly loaded
Answer:
5. Which of the following
materials is unsuitable as a
bearing:
A. Teflon
B. Low carbon steel
C. Cast iron
D. Nylon
Answer: B
6. Safety features that must be
placed and maintained as machine,
black smith, welding, and foundry
shop.
A.Safety goggle
B.Walkway guide
C.Safety notice in markings
D. All of these
Answer: C
7. The angle, at the base cylinder
of an involute gear, that the tooth
makes with the gear axis:
A.Base helix angle
B.Pressure angle
C.Arc of recess
D. Arc of approach
Answer:
A
8. A kind of thread that is
generally used:
A. UNEC
B. UNC
C. UNF
D. UNEF
Answer: B
9. Which of the following
acronyms is not generally used
as standard
A. ASTM
B. SAE
C. IPS
D. AISI
Answer: C
10. What is the difference between the shaper
and a planer?
A. The tool of the shaper moves on the planer is
stationary
B. The shaper can perform slotting operation
while the planer cannot
C. The shaper handles large pieces while the
planer handles only small pieces
D. The tool of the shaper moves in reciprocating
motion while the tool in the planer movers in
rotary motion.
Answer: A
11. The path of contact involute
gears where the force/power is
actually transmitted. It is a straight
imaginary line passing through the
pitch point and tangent to the base
circle.
A.Principal reference plane
B. Pitch point
C. Front angle
Answer: D
D. Line of action
12. The hardness of helical and
herringbone gear teeth after heat
treatment is 210 to 300 Brinell
Hardness, for gear and pinion is at:
A.360 Brinell min.
B. 400 Brinell max.
C. 340-350 normal
D. All of these
Answer:
C
13. A type of gear commonly used in
parallel-shaft transmission especially
when a smooth, continuous action is
essential as in high drives up to 12,000
fpm:
A. Bevel gear
B. Herringbone gear
C. Spur gear
D.Helical gear
Answer: D
14. It is used in conjunction with
circular cross sectional members to
retain oil and prevent dirt, foreign
particles, moisture and to permit
pressure differential between exterior
and interior of the applied part:
A. Seal
B. Gasket
C. Safety shield
Answer: A
D.Packing
15. An object thrown upward
will return to earth with the
magnitude of the terminal
velocity equal to:
A. Zero
B. One-half the initial volume
C. Twice the initial volume
D. The initial volume Answer: D
16. A liquid metal:
A. Mercury
B. Lead
C. Zinc
D. Aluminum
Answer: A
17. What type of gear which
can transmit power at a certain
angle.
A. Helical gear
B. Worm gear
C. Bevel gear
D. Herringbone gear
Answer: C
18. Type of V-belt to use in a
driving pulley with speed of 360
rpm and transmitting 5 Hp:
A.Type C belts
B.Type B Belts
C.Type A Belts
D. Type D Belts
Answer: B
19. The arbitrary modification by
removing a small portion of a tooth
material at th tip of the gear tooth
is called:
A.Tip removal
B. Tip undercut
C. Tip relief
D. Pressure angle cut
Answer: C
20. The first derivative of kinetic
energy with respect to velocity is:
A.Power
B.Acceleration
C.Momentum
D. None of these
Answer: C
21. What is the difference between brass and
bronze?
A. Brass is composed of copper and zinc whil
bronze is compose of copper and tin.
B. Brass is composed of copper and zinc while
bronze is basically copper and tin plus nonferrous
C. Bronze is reddish in color while brass is a
mixture of copper and aluminum
D. Bronze is mostly an alloy of copper and tin
while brass is a mixture of copper and antimony.
Answer: A
22. The reciprocal of the diametral
pitch equivalent to the ratio of
pitch diameter to the number of
teeth:
A.Lead
B.Clearance
C.Module
D. Involute
Answer: C
23. What is the property of a
material which resists forces acting
to pull the material apart?
A.Shear strength
B.Tensile strength
C.Torsional strength
D. Compressive strength
Answer: B
24. Which do not belong to
foundry or metal casting shop?
A. Shake-out machine
B. Molding machine
C. Coremaking
D. Forging machine
Answer: A
25. The center of gravity of a solid
pyramid or cone with a total
height H is:
A.¼ H
B.3/5 H
C.1/3 H
D. 1/3 H
Answer: A
26. The gradual chemical reaction
by other substance such that the
metal is converted to an oxide or
other compounds:
A.Corrosion
B.Cheaping
C.Rusting
D. Weathering
Answer: A
27. A material that should be
avoided in constructing wood
pattern:
A.Sap wood
B.Kiln dried wood
C.Heart wood
D. Core portion of wood
Answer:
A
Answer: B
29. What is the modulus od
elasticity if the stress is 44,000
psi and a unit strain of 0.00105?
A. 41.905 x 106
B. 42.300 x 106
C. 41.202 x 106
D. 43.101 x 106
Answer: A
30. Which of the following is
not a structural steel class?
A. Low carbon steel
B. Stainless steel
C. Medium carbon steel
D. Tool and die steel
Answer: D
31. What happens to a drill if the
operating speed is too fast?
A. Drill will crack
B. Drill will become overheated and
will bend
C. Drill will become overheated and
will be drawn from steel
D.Drill will become very dull and wear
fast
Answer: C
32. Copper and most of its
alloys can be hardened by:
A. Patenting
B. Cold working
C. Case hardening
D. Soaking
Answer: B
33. A type of coupling that alloys slight
amount of torsional angular flexibility due
to introduction with some elastic material
cylindrically wrapped around the bolts in
the flange.
A. Simple elastic bonded coupling
B. Elastic material bushed coupling
C. Elastic material bonded coupling
D. All of the above
Answer: B
34. Outstanding safety record
contributes to:
A.High productivity
B. Outstanding performance that
expects reward from management
C. Confidence in foreman’s ability to
perform well
D. Pride and enthusiasm to one-self
Answer: A
35. The capacity of metal to
withstand load without
breaking is:
A. Strength
B. Stress
C. Elasticity
D. Strain
Answer: A
36. Finding the resultant of two
or more forces is called:
A. Coplanar force
B. Non-coplanar force
C. Couple
D. Composition of forces
Answer: D
37. A machinery operation whereby
done with the work accurately
fastened has a reciprocating
(forward and backward) motion
and the tool head is stationary.
A.Shaping
B. Planning
C. Turning
D. Reaming
Answer:
B
38. The phenomenon of
continuous stretching under
load even if the stress is less
than the yield point:
A. Elasticity
B. Ductility
C. Plasticity
D. Creep
Answer: D
39. In a pair of gears, ________
is the plane perpendicular to
the axial plane and tangent to
the pitch surface.
A. Pitch
B. Pitch plane
C. Pitch circle
D. Pitch point
Answer: B
40. What type of gear is used
for high speed operation?
A. Helical
B. Spur
C. Bevel
D. Worm
Answer: A
41. V-belts operate efficiently at
speed of about (fpm):
A. 4500
B. 4400
C. 4200
D. 3600
Answer:
A
42. Name the type of chuck commonly
used for holding work piece in a lathe
operation? Example, 3-jaw universal
chuck, 4-jaw independent chuck
A. Magnetic jaw chuck
B. 2-jaw independent
C. 8-jaw universal
D.Combination
Answer: D
43. For a high corrosion resistant
stainless steel, what minimum
chromium content is required?
A.8%
B.4.3%
C.1.1%
D. 5.8%
Answer: A
44. Clearance to a new boiler
installation to the existing or old plant
building should follow a minimum
clearance of ______ between top of
the boiler proper and the ceiling as
stated in the PSME code.
A. 2000 mm (max)
B. 1000 mm (max)
C. 2130 mm (max)
Answer: C
D.2150 mm (max)
45. Ordinary steel begins to lose
strength and elasticity significantly
at about : ______ °F.
A.900-1000 °F
B. 800-900 °F
C. 750-850 °F
D. 600-700 °F
Answer: D
46. Statement that a given body is in
static equilibrium means that a
body cannot:
A.Have any type of motion
B. Be acted upon by more than one
force
C. Undergo any displacement
D. Have any acceleration
Answer: A
47. Most effective alloying element
for reducing brittleness of steel at
very low temperature :
A.Manganese
B.Molybdenum
C.Silicon
D. Nickel
Answer: D
48. Normal stress relieving
temperature for cast steel:
A. 200 to 350 °F
B. 400 to 500 °F
C. 300 to 400 °F
D. 450 to 550 °F
Answer: D
49. It is advised that in rubber
belts application / mounting, it
should have an initial tension of
_____ inch / ply.
A. 18 to 24
B. 15 t 20
C. 12 to 15
D. 10
Answer: B
50. Non-ferrous filler metal is melted
into grooves or as fillet on the mother
metal; the base metal is not melted.
This is commonly used for joining iron
based machine parts or in repair
works of some materials. It is called:
A. Spot welding
B. Braze welding
C. Brazing
Answer: B
D.Gas welding
51. What is the common shop practice
to prevent solder from running away
from surface to be joined?
A. Surround the work with clay
B. Introduce around the work rolled
wet cloth
C. Put asbestos sheeting around the
work
D.All of these
Answer: D
52. The three-moment equation
may be used to analyze:
A. Tapered column
B. Continuous beam
C. Composite beam
D. Axially end loaded beam
Answer: B
53. One of the causes of spur gear tooth
breakage is the unbalanced load on one end
of the tooth that results in higher stresses
than when the load is evenly distributed. To
minimize this problem, the face width “b”
should not be greater than the thickness (or
pitch) of the tooth. In the absence of test
values, the following can be a guide:
A. 2.5 PC < b < 4 Pc
B. 2.0 Pd< b < 4 Pd
C. 2.5 Pd< b < 4 Pd
D. 2.0 Pd< b < 4 Pc
Answer: A
54. The property that
characterizes a material ability
to be drawn to a wire:
A. Ductility
B. Thermal conductivity
C. Tensile strength
D. Endurance limit
Answer: A
55. Deals only with the motion
of bodies without reference to
forces that cause them:
A. Dynamics
B. Kinetics
C. Statistics
D. Kinematics
Answer: D
56. In shear pin or breaking pin
design, we may use the data
experienced by Link-Belt for 1/8
inch to 1 inch pins and the
breaking stress is _____ksi.
A.40
B.55
C. 50
Answer: C
D. 48
57. Recommended best cutting
angle of drill for work on steel
or cast iron is _____degrees.
A. 48
B. 63
C. 59
D. 50
Answer: C
58. Cold working of steel plates
make the metal_________.
A. tougher
B. more ductile
C. harder
D. more malleable
Answer: C
59. Considering a maximum safe
center distance of sprockets should
be __________ pitchers. Very long
center distance cause catenary
tension in the chain.
A.70
B.80
C.60
Answer:
D. 50
B
60. Hypoid gear is a special type
of gear like:
A. Worm gear
B. Spur gear
C. Herringbone gear
D. Bevel gear
Answer: D
61. The maximum stress to
which a material may be
subjected before failure occurs:
A. Ultimate strength
B. Ultimate stress
C. Endurance limit
D. Tensile stress
Answer: A
62. A property of material
which relates the lateral strain
to the longitudinal strain.
A. Stress
B. Strain
C. Poisson’s ratio
D. Strength
Answer: C
63. All are associated with the
grade of steel except:
A. SAE 43XX
B. SAE 13XX
C. SAE 10XX
D. SAE 74XX
Answer: D
64. Poisson’s ratio is the ratio of:
A.Shear strain to compressive
strain
B.Elastic limit to compressive
strain
C.Lateral strain to longitudinal
strain
D. Elastic limit to proportional
Answer: C
limit
65. Which of the following is not
structural class of steel?
A.Low carbon steel
B.Tool and die steel
C.High chrome alloy steel
D. High strength low alloy steel
Answer: B
66. The product of the resultant of
all forces acting on a body and the
time that the resultant acts:
A.Angular impulse
B. Angular momentum
C. Linear impulse
D. Linear momentum
Answer: C
67. The smallest area at the point of
rupture of a tensile specimen divided
by the original area is called:
A. Percentage elongation
B. Izod test
C. Charpy test
D.Percentage reduction of the area
Answer: D
68. It equalizes the energy exerted
and the work done thus preventing
excessive or sudden changes of
speed:
A.Flywheel
B. Balance wheel
C. Flywheel pulley
D. All of these
Answer: D
69. A mechanism which usually
do the indexing in a machine
tool.
A. universal chuck
B. slooter
C. dividing head
D. indexing
Answer: C
70. Metal that assist lubrication
or lubricant itself:
A. Zinc
B. Antimony
C. Babbitt
D. Lead
Answer: C
71. A system of forces in space is in
equilibrium. If two unequal and
opposite collinear forces are added,
which of the following if any is true?
A.equilibrium is maintained
B. equilibrium is destroyed
C. an unbalanced moment exists
D. none of these is true
Answer: A
72. It is a science of motion that
can be solved in terms of scalar or
vector algebra:
A.Kinematics
B.curvilinear translation
C.projectiles
D. acceleration
Answer: A
73. Permanent deformation or
strain may occur without
fracture.
A. malleability
B. elasticity
C. ductility
D. plasticity
Answer: C
74. The ability of a metal to be
deformed considerably without
rupture is called:
A. malleability
B. elasticity
C. ductility
D. plasticity
Answer: D
75. When two elastic bodies collide,
which of the following laws can be
used to solve for the resulting
velocity?
A.Dalton’s Law
B. Avogadro’s Law
C. Conservation of energy
D. Conservation of momentum and
conservation of energy
Answer: D
76. When the hole is smaller than the
shaft, it will take the pressure to put
the parts together. The allowance is
said to be negative and is termed:
A. Negative tolerance
B. Negative allowance
C. Negative fits
D.Interference of metal
Answer: D
77. Device used to measure
accurately speed:
A. Speedometer
B. Dial indicator
C. Tachometer
D. Dial gauge
Answer: C
78. If the velocity of a mass is the
same all the time during which
motion takes place is called:
A.deceleration
B.uniform motion
C.acceleration
D. none of these
Answer: B
79. Length of contact between two
mating parts in a screw and nut
threads measured axially is called:
A.arc of contact
B.depth of engagement
C.length of engagement
D. axis of contact
Answer: C
80. The distance a helical gear or
worm would thread along its axis in
one revolution if it were free to
move axially is called:
A.length of action
B. length of contact
C. land
D. lead
Answer: D
81. Major and minor diameters
are commonly used in:
A. screw thread
B. bolts
C. gears
D. all of these
Answer: A
82. A lathe with multiple
cutting stations:
A. turret lathe
B. engine lathe
C. manual lathe
D. none of these
Answer: A
83. The nominal diameter of the
bolts is the:
A. major diameter
B. minor diameter
C. mean diameter
D. all of these
Answer: A
84. Ratio of unit lateral
deformation to the unit
longitudinal deformation:
A. Poisson’s ratio
B. Strain
C. Stress
D. Modulus of rigidity
Answer: A
85. For moderate speed of
mating gears, the ideal ratio
contact is:
A. 1.25 - 4.0
B. 1.20 – 1.45
C. 1.00 – 1.30
D. 0.35 – 1.45
Answer: A
86. A shaft is to be checked for
concentricity. A suitable method of
performing the check is:
A.bench centers and dial indicator
B. line shafting bearing alignment
C. observing vibration of the
shafting
D. none of these
Answer: A
87. A kind of thread in which the
width of the thread is approximately
equal to the depth of the thread and
the space between threads are
approximately equal.
A. Square thread
B. Acme thread
C. Buttress thread
D.Whitworth thread
Answer: A
88. Which of the following is not
used to resemble the shape of the
tool bit?
A.Round nose
B.Center cut
C.Square nose
D. Thread cutting
Answer: B
89. Negative allowance is also
called:
A. interference of material
B. feeler gage
C. micrometer
D. tolerance
Answer: A
90. A property of matter which
causes it to resist any change in its
motion or state of rest.
A.brake
B.friction
C.inertia
D. impulse
Answer: C
91. Separate forces which can
be so combined are called:
A. non-concurrent forces
B. couple
C. combined forces
D. concurrent forces
Answer: D
92. A lathe machine threading
mechanism:
A. reversed gear and lever
B. spindle gear
C. change stud gear
D. all of these
Answer: B
93. It is the difference of
addendum and dedendum
which is equivalent to the
whole depth less working depth.
A. fillet space
B. fillet radius
C. clearance
D. backlash
Answer: C
94. Machine tools used for laying
straight lines on metal surfaces
made of sharp tool steel is called
A.plain scriber
B.a trammel
C.hermaphrodite caliper
D. divider
Answer: A
95. All are associated with standard
material specified except:
A.American Iron and Steel Institute
B. Society of Automotive Engineers
C. Southeast Asia Iron and Steel
Institute
D. American Society for Testing
Materials
Answer: C
96. The best instrument for
measuring a thousand of an
inch
A. Micrometer
B. Tachometer
C. Caliper
D. pyrometer
Answer: A
97. Tooth width measured
along the chord at the pitch
circle:
A. flank
B. face width
C. width of space
D. chordal thickness
Answer: D
98. In the gear design, the total work load
must be equally shared by its arms. Rim
must be rigid to support these arms and
also the head is recommended for its
stiffness value. The assumption in the
detailed design of rim thickness and depth
of bead is_____ circular pitch (PC).
A. 0.65
B. 0.50
C. 0.56
D. 0.44
Answer: C
99. Alloy that improves strength
of steel at high temperature
application.
A. tungsten
B. molybdenum
C. chromium
D. all of these
Answer: D
100. A furnace used in melting
ferrous metals:
A. annealing furnace
B. tempering furnace
C. induction furnace
D. normalizing furnace
Answer: C
MACHINE ELEMENTS 07
Past ME Board Question
1. A furnace used in melting
non-ferrous metals.
a.Cupola furnace
b. Crucible furnace
c. Induction furnace
d. Tempering furnace
Answer:
B
2.Endurance strength is nearly
proportional to the ultimate
strength but not with:
a.Yield strength
b. Design stress
c. Shear stress
d. All of the above
Answer:
A
3.Liners are normally made
of:
a. Cast iron
b. Alloyed bronze
c.Alloyed steel
d. Alloyed aluminium
Answer:
A
4. Used in as cast condition steel
casting with carbon content less
than _______% C.
a.0.26
b. 0.20
c. 0.15 to 0.18
d. 0.25
Answer:
B
5. The yield strength of a regular
yellow brass (65 to 70% Cu, 30 to
35% Zn ) can be increased/
improved by:
a. Cold working
b.Tempering
c. Chill casting
d.Heat treatment
Answer:
A
6. The purpose of these parts in
application is to have better
bearings to seal the guard against
marring, etc.
a. Bearing journal
b.Metallic seal
c. Washer
d.Shaft seal
Answer:
C
7. Metals are conductive because :
a. He electrons are loosely bound to
the nuclei and therefore mobile
b. Having characteristic metallic luster
c. They are on the left side of the
periodic table
d. They have extra electrons as
exhibited by normally possible
balance state
Answer:
A
8. It is a considered semi-solid
lubricant:
a.Lube oil
b. Graphite
c. Grease
d. All of these
Answer:
C
9. What is the common cutting
fluids used for cutting metals?
a.Water with soda and borax
b. Light mineral oil
c. Soluble oil
d. All of these
Answer:
D
10. Good stabilizer in stainless
steel:
a.Columbium
b. Titanium
c. Tantalium
d. All of these
Answer:
D
11. The good deoxidizer in steel
melting:
a.Manganese
b. Silicon
c. Aluminum
d. All of these
Answer:
D
12. The usual ratio of water to
soluble oil used as cutting fluid:
a. 50% water to 50% oil
b.2 water to 1 oil
c. 3 water to 1 oil
d.4 to 80 water to 1 oil
Answer:
D
13. Killed steel is always
associated with:
a.Silicon
b. Manganese
c. Phosphorous
d. Sulfur
Answer:
A
14. Which of the following does
not belong to the group?
a.Welding
b. Soldering
c. Casting
d. Brazing
Answer:
C
15. Which of the following is
most popular soldering of metal?
a.10/80
b. 45/55
c. 50/50
d. 60/40
Answer:
C
16. The motion of an object
diminished/ decrease speed.
a.Deceleration
b. Retarded motion
c. Negative impulse
d. All of these
Answer:
B
17. It is recommended not to have a
direct drive and drive sprockets if the
ratio of their teeth exceeds _________
use two or more steps combination.
a. 10 times
b. 8 times
c. 5 times
d. 6 times
Answer:
B
18. It is used to change rotary
motion to reciprocating motion:
a.Helical gear
b. Rack gear
c. Worm gear
d. Spur gear
Answer:
B
19. Stresses that are
independent loads:
a. Working stress
b. Operating stress
c.Residual stress
d. Shear stress
Answer:
C
20. The distance of tooth, which
is equal to the sum of the
addendum and dedendum:
a.Full depth
b. Whole depth
c. Working depth
d. Dedendum
Answer:
B
21. The concave portion of the
tooth profile where it joints the
bottom of the tooth space:
a. Fillet curve
b.Fillet radius
c. Bottom depth
d.Fillet
Answer:
A
22. In gear design, the ratio of
the pitch diameter in inches to
the number of teeth:
a.Module
b. Diametral pitch
c. English module
d. Circular pitch
Answer:
C
23. It is recommended for high
speed application that the
minimum number of teeth in
small sprocket should be :
a.26 to 30
b. 12 to 16
c. 26 to 28
d. 18 to 24
Answer:
D
24. Continuous stretching under
load even if the stress is less than
the yield point.
a. Plasticity
b.Elasticity
c. Creep
d.Ductility
Answer:
C
25. Which of the following
is not a structural class of
steel?
a. High speed steel
b. Tool and die
c.Low carbon
d. High carbon
Answer:
B
26. Opposite direction
parallel forces:
a. Concurrent
b. Coplanar
c.Couple
d. Non-coplanar
Answer:
C
27. The ratio of the moment of inertia
of the cross-section of the beam to the
section modulus.
a. Equal to the radius of gyration
b. Equal to the area of cross-section
c. Measure of a distance
d. Dependent on the modulus of
elasticity
Answer:
C
28. Gear used to transmit power at a
high velocity ratios between nonintersecting shafts that are usually but
not necessarily at right angle.
a. Helical gear
b. Bevel gear
c. Worm gear
d. Spiral gear
Answer:
C
29. Which of the following is the
differential of the shear equation?
a. Bending moment of the beam
b.Tensile strength of the beam
c. Slope of the elastic curve
d.Load of the beam
Answer:
D
30. It is arbitrarily defined
as the push and pull.
a. Force
b. Work
c.Inertia
d. Power
Answer:
A
31. The changes in shape or
geometry of the body due action of
a force on it is called deformation
or:
a. Shear stress
b.Stresses
c. Compressive stress
d.Strains
Answer:
D
32. For evenly distributed and
uniform wear on each meshing gear
tooth, the ideal design practice is to
consider a __________.
a. Wear resistance alloy addition to
tooth gear
b. Heat treatment of the gears
c. Hardening of each tooth
d. Hunting tooth addition
Answer:
D
33. reciprocal of a diametral pitch
or the ratio of pitch diameter to
number of teeth.
a. Lead
b.Module
c. Involute
d.Clearance
Answer:
B
34. It is the ability of the material
to resist deformation under stress:
a. Plasticity
b.Stiffness
c. Toughness
d.All of these
Answer:
B
35. Flat leather belting not
recommended for use in speed
excess of _____fpm.
a.3600
b. 4800
c. 6000
d. All of these
Answer:
C
36. The angle included between
the sides of the tread measured in
an axial plane in a screw thread:
a. Angle of tread
b.Angle between tread or 40⁰
c. Helix angle tread
d.Half angle tread or 20⁰
Answer:
A
37. The property of a material that
relates the lateral strain to
longitudinal strain.
a. Stress
b.Strain
c. Poisson’s ratio
d.Endurance limit
Answer:
C
38. Eccentrically loaded
bearing is also called:
a. Full bearing
b. Offset bearing
c.Partial bearing
d. Fitted bearing
Answer:
B
39. I the selection of wire rope,
regular lay means wires and strands
are arranged In the following manner:
a. Twisted in same direction
b. Twisted in any direction
c. Twisted in opposite direction
d. Twisted in along direction
Answer:
C
40. In involute teeth, the pressure
angle is often defined as the angle
between the line of action and the line
of tangent to the pitch circle. It is also
termed as:
a. Helix angle
b. Angle of recess
c. Angle of obliquity
d. Arc of action
Answer:
C
41. Height of tooth above pitch
circle or radial distance
between pitch circle and top
land of the tooth.
a.Top tooth
b. Addendum tooth
c. Land
d. Hunting tooth
Answer:
B
42. The function of clutch in the
machine tools is:
a. Lowering the drive
b.Alignment of drive shaft
c. To disconnect or connect at will
the drive
d.To ensure that two shafts line up
at high speed
Answer:
C
43.The amount by which the
width of the tooth space exceeds
he thickness of the engaging
tooth on the pitch circles.
a. Backlash
b. Clearance
c. Undercut
d. Chordal thickness
Answer:
A
44. Which does not belong to
the group?
a.SAE
b. AISI
c. SEA II
d. ASTM
Answer:
C
45. What is the SAE
specification number of
molybdenum?
a.SAE 2XXX
b. SAE 3XXX
c. SAE 4XXX
d. SAE 5XXX
Answer:
C
46. What will be the effect in
bushing gears without backlash?
a.Jamming
b. Overheating
c. Overload
d. All of these
Answer:
D
47. Range of helix angle on
helical gear
a. Less than 18
b. 15-25
c.20-35
d. 35-40
Answer:
B
48. The distance a helical gear or
worn would tread along its axis in
one revolution if it were free to
move axially.
a. Lead
b.Tread
c. Pitch
d.Land
Answer:
A
49. It refers to the surface of the
gear between the fillets of
adjacent teeth.
a.Top land
b. Bottom land
c. Pitch
d. Fillet
Answer:
B
50. The distance between
adjacent rivets is called:
a. Pitch
b. Crest
c.Lead
d. None of these
Answer:
A
51. A plane perpendicular to the axial
plane and to the pitch plane. In gears
with parallel axis, the transverse plane
and the plane of rotation coincide.
a. Transverse plane
b. Principal reference plane
c. Normal plane
d. Pitch plane
Answer:
A
52. What tool will be used
in making wood pattern in
the foundry shop?
a. Band saw
b. Drill machine
c.Saw and chisel
d. Hammer
Answer:
C
53. All are functions of
lubricating oil except:
a. Adhesion
b. Corrosion prevention
c.Act as a coolant
d. To lighten the load
Answer:
A
54. What type of bearing
which totally encloses the
shaft?
a. Offset bearing
b. Central bearing
c.Babbit bearing
d. Full bearing
Answer:
D
55. Not adaptable to
welding due to strength and
poor ductility:
a. Copper parts
b. Aluminium parts
c.Cast iron parts
d. All of these
Answer:
B
56. In general, the design stress and factor
of safety are related as follows:
a. Design stress = ultimate stress times
factor of safety
b. Design stress = ultimate stress divided
by factor of safety
c. Factor of safety = design stress divide by
ultimate stress
d. Ultimate stress = factor of safety divided
by design stress
Answer:
B
57. The color of pipe for
communication is:
a. White
b. Blue
c.Yellow
d. Orange
Answer:
A
58. It improves red
hardness of steel:
a. Chromium
b. Cobalt
c.Boron
d. Lead
Answer:
B
59. A metal which has a high
electrical conductivity but
should not be used for high
temperature metal.
a.Silicon
b. Zinc
c. Chrome alloy
d. Carbide
Answer:
B
60. Finding the resultant of two
or more forces is called:
a.Co-planar forces
b. Non-coplanar forces
c. Couple
d. Composition of forces
Answer:
D
61. Eccentrically loaded
bearing is also called:
a. Full bearing
b. Offset
c.Partial bearing
d. Fitted bearing
Answer:
B
62. The best instrument for
measuring a thousandth of
an inch:
a. Micrometer
b. Tachometer
c.Caliper
d. Pyrometer
Answer:
A
63. Galvanized iron is term
referring to iron coated with:
a. Aluminum
b. Tin
c.Zinc
d. Manganese
Answer:
C
64. The ability of metal to
resist being crushed:
a. Shearing strength
b. Compressive strength
c.Torsional strength
d. Tensile strength
Answer:
B
65. Is the permissible variation
of the size of a dimension:
a.Tolerance
b. Allowance
c. Clearance
d. Interference
Answer:
A
66. The single force which produces
the same effect upon a body as two or
more forces acting together is called:
a. Resultant force
b. Co-planar force
c. Couple
d. Non-coplanar force
Answer:
A
67. Product of mass and
linear velocity is known as:
a. Impulse
b. Linear momentum
c.Angular momentum
d. Impact
Answer:
B
68. What is the SAE
specification number of
Molybdenum-chronium-nickel?
a.48XX
b. 47XX
c. 46XX
d. 45XX
Answer:
B
69. Plus or minus of the
tolerance is called:
a. Total tolerance
b. Unilateral tolerance
c.Bilateral tolerance
d. None of these
Answer:
C
70. Some of experiments made at
Cornell University showed the
experience mechanic could bread a
___________ bolt due to nut
tightening.
a. 3/8 inch
b.5/8 inch
c. ½ inch
Answer:
d.7/16 inch
B
71. Common defects encountered
in the Foundry Shop steel casting
operation and also welding
practices.
a. Cracks
b.Cold shot
c. Parting line
d.Blow/pin holes
Answer:
D
72. This particular cutting tool
material could withstand cutting
temperature of 1800˚F and higher at
cutting speed beyond those possible
with other cutting tool materials:
a. Titanium carbide
b. Ceramic
c. Carbide grade
d. Cubic boron nitride
Answer:
D
73. Moment curve to a simple
beam with a concentrated load
at middle span takes the shape
of a
a.Triangle
b. Rectangular
c. Trapezoid
d. Semi-eclipses
Answer:
A
74. Type of chuck wherein the work
piece with standard diameter or size
could be attached fast and quick
especially small size of work of mass
production.
a. Lathe drive plate
b. Clamp toe dog
c. Collet attachment
d. Steady centre rest
Answer:
C
75. Material may be stretched and
still returns to its former form/
condition upon release of forces is
called:
a. Plasticity
b.Modulus of elasticity
c. Ductility
d.Elastic limit
Answer:
D
76. The brittleness in steel
at elevated temperature is:
a. Hard drawn
b. Cold lap
c.Red shortness
d. Residual stresses
Answer:
C
77. Intermediate gear is also
called __________ gear in a gear
train arrangement.
a.Idler
b. Pinion
c. Third gear
d. Mounted gear
Answer:
A
78. The top and bottom land for
gears is similar formed as crest and
___________ for screw thread.
a. Flank
b.Root
c. Flank tooth
d.Topland
Answer:
B
79. Cold drawing is also
called ____________.
a. Hard drawn
b. Oxidized steel
c.Cold lap steel
d. Strain hardening
Answer:
A
80. Which of the following
services is not considered to be
a work of a machinist?
a.Reboring
b. Grinding
c. Overhauling
d. Honing
Answer:
C
81. In Machine Shop, had forging
operation of lengthening a piece of
stock while reducing the crosssectional area of work is called:
a. Bloating
b.Upsetting
c. Spreading
d.Draining out
Answer:
B
82. The recommended age
limit of fire tube boilers.
a. 35 years
b. 30 years
c.40 years
d. 50 years
Answer:
B
83. Silicon-manganese steel
designation, SAE ______.
a.72XX
b. 40XX
c. 92XX
d. 9XX
Answer:
C
84. The factor or safety generally applied
in wire rope design starts at 3-4 for
standing rope application, 5-12 for
operating rope and ______ for hazard to
life and property application like foundry
operation.
a. Higher value
b. 7-10
c. 8-10
d. 10-18
Answer:
A
85. The maximum stress induced
in a material when subjected to
intermittent or repeated load
without causing failure is called:
a. Ultimate stress
b.Endurance limit
c. Ultimate torque
d.Elastic limit
Answer:
B
86. Which of the following
tools does not belong to the
group.
a. Hermaphrodite caliper
b. Divider
c.Double VEE block
d. Trammel
Answer:
C
87. ___________ is the theoretical
profile of the tread for a length of one
pitch in the axial plane on which
design forms of both the external
threads are based:
a. Basic form of tread
b. Effective tread
c. Basic profile of tread
d. Design form of external thread
Answer:
C
88. One of the following
materials is not mentioned for
wire rope pulley / sheave
applications.
a.Plastic
b. Iron
c. Paper
d. Copper alloy
Answer:
A
89. Internal stress exerted by
the fibers to resist the action of
outside force is called:
a.Shearing stress
b. Tensile stress
c. Ultimate stress
d. Comprehensive stress
Answer:
A
90. _______ Thread is used where
the thread requires great strength
and usually cut square on one side
and slanting on the other side.
a. Janno
b.Buttress
c. Square
d.Double
Answer:
B
91. In greater quantity, this
element is harmful to the
molten ferrous metal.
a. Silicon
b. Aluminum
c.Oxides
d. Sulfur
Answer: D
92. For economical cost in the
manufacturing large worm gears the
following materials are usually
applied.
a. Bronze rim with cast steel spider
b. Cast iron rim with bronze spider
c. Cast steel rim with brass spider
d. Alloyed aluminium rim with cast
iron spider
Answer:
A
93. Non-metallic material of
high melting temperature being
used as furnace lining:
a.Quartz bricks
b. Refractories
c. Silica sand
d. Dolomite clay bricks
Answer:
B
94. Chromium steel (to
include heat and corrosion
resistant) designation:
a. SAE 56XX
b. SAE 514XX
c.SAE 61XX
d. SAE 9XX
Answer:
B
95. Mirror finish has surface
finess of ______ rms
a. 1
b. 2 to 8
c.1 to 3
d. 2 to 5
Answer:
A
96. All terms and abbreviations
deal with wire rope arrangement
except this _______ which deals
with wire rope material strength.
a. Preformed
b.IWRC
c. Mps
d.Lang lay
Answer:
C
97. Alloy steel axle under repeated load/
stress will eventually fail if the load/
stresses above the endurance for the steel
under consideration. The endurance limit
of the steel is therefore:
A. Equal to the allowable stress of the
module of elasticity
B. Equal to half of the ultimate strength
C. Equal to module of elasticity
D. Equal to 80% of the elastic limit
Answer:
B
98. Tap not used for cutting
thread ________.
A. Tapping tap
B. Bottoming tap
C. Plugging tap
D. Taper tap
Answer:
A
99. Alloy that improves
strength of steel at high
temperature application.
A. Tungsten
B. Molybdenum
C. Chromium
D. All of these
Answer:
D
100. A furnace used I
melting ferrous metals:
A. Annealing furnace
B.
Tempering furnace
C.
Induction furnace
D. Normalizing furnace
Answer:
C
MACHINE ELEMENTS 08
Past ME Board Question
1. Which of the following does
not affect the tensile strength of
steel?
A. Sulphur
B. Cobalt
C. Phosphorus
D. Boron
Answer:
D
2. Which of the following is an
example of rectilinear
translation?
A. Locomotive
B. Rack gear
C. Piston
D. Jack
Answer: C
3. A petroleum by-product used
as an electrodes in an electric
arc furnace melting operation.
A. Anthracite coke
B. Foundry coke
C. Graphite electrodes
D. Bituminous coke
Answer: C
4. A machine shop equipment
that can flatten horizontally,
vertically or angular plane.
A. Shaper machine
B. Welding machine
C. Drill machine
D. Power saw
Answer: A
5. What type of leather belting
should be used at an ambient
temperature above 140⁰F and
possible acid liquid coming in
contact with belt?
A.Mineral tanned
B.Combination of oak
C.Oak tanned
Answer: D
D. None of these
6. The material for engine
radiator is usually made of:
A. Yellow brass
B. Silicon brass
C. Admiralty brass
D. Navy brass
Answer:
A
7. What factors can modify the
recommended cutting speed of
known work piece?
A.Rough cutting of work piece
B.Modify the shape of the cutting
tools
C.Use correctly shaped cutting
tools
Answer:
D. Depth of cut
D
8. In a cutting tool the cutting
end can also be generally called:
A. End cutting edge
B. Nose
C. Back rake
D. Side rake
Answer:
B
9. What equation to be used in
computing the acceleration of
the center of rolling ball with a
diameter of 8 inches?
A. 0
B. rὼ²
C. ὼ²/r
D. v ²/r
Answer:
B
10. From experience specify the
conventional limit of flywheel
operations to be at 6000ft/min for
cast iron and ____ for cast steel.
A.7000
B.8000
C.10000
D. 12000
Answer: D
11. If a set of spur gears are
made, installed and lubricated
properly, they normally may be
subjected to failures like:
A. Tooth spalling
B. Tooth peening
C. Pitting
D. Shearing
Answer:
C
12. Normally cast iron contains
2% carbon or more and silicon
in the range of____%.
A. 1 to 3
B. 2 to 4
C. 2 to 3
D. 1 to 6
Answer:
A
13. A major component of
cast steel is:
A. Silicon
B. Iron
C. Manganese
D. Chromium
Answer:
B
14. The application of electrical
current to the corrosion circuit o
counter the corrosion reaction is
called:
A.Cathodic protection
B.Sacrificial anodes method
C.Chemical corrosion process
D. Galvanic action
Answer:
A
15. As a rule of thumb the
depth of foundation could be
about 3.2 to ____ times the
engine stroke.
A. 4.20
B. 4.0
C. 3.40
D. 3.80
Answer:
A
16. Bevel gears subjected to
corrosion and lightly loaded are
usually made of:
A. Bronze
B. Brass
C. Duralumin
D. All of these
Answer: D
17. The characteristics of tool steel
sustain shocks and major impacts
is due to its:
A.Toughness
B.Stiffness
C.Ductility
D. Machinability
Answer:
A
18. The flux that should be
provided in soldering electrical
connection or commutator wires
as its tends to corrode the
connections.
A.Sal ammoniac
B.Zinc chloride
C.Stearin
Answer: D
D. Acid fluxes
19. Treatment process that produces a
residual compressive stress at the surface
(which occupy more volume) and residual
tension on the inside that results in
considerable increase in fatigue strength
for members on torsion/bending:
A. Partial quenching
B. Heavy oil quenching
C. Quenching
D. Shallow quenching
Answer: D
20. A good general purpose
deoxidizer and promotes
fine grain in steel.
A. Copper
B. Magnesium
C. Molybdenum
D. Silicon
Answer: D
21. Surface connecting the
crest and roots of the screw
head.
A. Lead angle
B. Length of engagement
C. Top land
D. Flank
Answer: D
22. It is hardening treatment whereby
a cast metal is being heated to a very
high temperature than suddenly
subjected to rapid cooling to improve
hardenability of wear resistance is
called:
A. Annealing
B. Normalizing
C. Tempering
Answer: D
D.Quenching
23. Moment of inertia is also
called:
A. Modulus of elasticity
B. Weep strength
C. Radius of gyration
D. None of these
Answer: D
94. Nickel-chromiummolybdenum steel designation.
SAE:
A. SAE51XX
B. SAE74XX
C. SAE94XX
D. SAE64XX
Answer:
C
25. It is the name applied to
reciprocating circular motion as
that a pendium.
A. Intermittent motion
B. Reciprocating motion
C. Oscillation
D. Momentum
Answer:
C
26. Avoidance of vibration in
equipment of machinery
foundations, a mass off weight
equal to ____ times the forces are
needed.
A.10 to 20
B.8 to 15
C.15 to 20
Answer:
D. 8 to 10
A
27. Commonly used/produced
screws/bolts/nuts and for
engineering applications is a
____ series.
A. UNC
B. ANSI
C. Withworth
Answer:
D. UNF
A
28. It indicates how many
times a volume of materials is
heavier than an equal volume of
water.
A. Specific gravity
B. Specific volume
C. Specific weight
D. Specific density
Answer:
A
29. Axially located rectangular
groove in a hub and shaft.
A. Keyseat
B. Cotter pin set
C. Flute
D. Setscrew point
Answer: A
30. The amount by which the
dedendum in a given gear/pinion
exceeds the addendum of its mating
pinion/gear. Also the radial distance
between the top of a tooth and the
bottom of the mating tooth space.
A. Tip relief
B. Top land
C. Clearance
Answer:
D.Space
C
31. Deflection of a beam is:
A. Proportional to the modulus of
elasticity and moment of inertia
B. Proportional to the load impose and
inversely to the length squared
C. Inversely proportional the modulus
of elasticity and moment of inertia
D.Inversely proportional to the weight
imposed time the length
Answer:
C
32. The normal density of work
space requirement to use in the
design of a work room is ______
cubic feet per person.
A. 400
B. 388
C. 353
Answer: D
D. 424
33. Safety features that must be
placed and maintained at machine,
blacksmith, welding and foundry
shops.
A.Walkway guide
B.Safety notices
C.Safety goggles
D. Safety notices in markers/
Answer: D
boards
34. It is a symbol that the work
surfaces should be machinedfinished and usually indicated in
the drawing and placed on line that
represent the surface to be
machined.
A.f
B.5
C.20
D. F.A.O
Answer:
A
35. Web is a part of a drill and
is usually thicker____
A. Beside the land
B. Nearing the shank
C. Close to the future
D. At the tip portion
Answer:
B
36. A carbon content in the
range of ___ in steel readily
responds to heat treatment.
A. 0.35 to 0.40 %C
B. 0.28 to 0.30 %C
C. 0.18 to 0.25 %C
D. 0.12 to 0.15 %C
Answer:
A
37. The soldering material
commonly applied for automobile
radiator cores and roofing seems.
A.15/85 % tin and lead
B.50/50 % tin and lead
C.45/55 % tin and lead
D. 20/80 % tin and lead
Answer: C
38. A research agency handling
assistance to all foundry,
machine shop and metallurgical
plant operation.
A. MIRDC
B. BOI
C. DOST
D. All of these
Answer:
A
39. An act of cutting out a
piece of metal at a desired
shape and size.
A. Broaching
B. Blanking
C. Slitting
D. Dinking
Answer:
B
40. The surface of the gear
between the fillets of adjacent
teeth is called:
A. Bottom land
B. Flank
C. Top land
D. Flank of tooth
Answer:
A
41. In drilling soft materials use
cutting angle as low as 40
degrees but for extremely hard
material up to ____ degrees is
recommended.
A. 80
B.65
C.75
D. 70
Answer:
D
42. The ideal thickness of the
cutter at the pitchline for
cutting helical gears should be
___ of normal circular pitch.
A. 3/8
B. ¾
C. ½
D. 5/16
Answer:
C
43. Progressive change of
position of a body is called:
A. Acceleration
B. Momentum
C. Motion
D. Force
Answer:
C
44. In designing gears for
power transmission consider
an efficiency of ___ as
recommended.
A. 96% or more
B. 89% or more
C. 85% or more
Answer: D
D. 98% or more
45. The five principal parts of
the shaper are: the table, tool
side, base, ram and ___.
A. Column
B. Vise
C. Drive motor
D. Apron
Answer:
B
46. It is a good design practice
for steel lineshafting to consider
a limit to the linear deflection of
____ inch/foot length maximum.
A. 0.050
B.0.010
C.0.020
D. 0.060
Answer: B
47. The conical surface at the
starting end of the thread is
called:
A. Pitch cone
B. Chamfer
C. Crest
D. Flute
Answer:
B
48. For ordinary steel, the
modulus of elasticity usually
falls between ____ million
pounds.
A. 20 to 31
B. 35 to 35
C. 20 to 35
D. 25 to 30
Answer:
A
49. The modulus of elasticity
for metals in compression is
usually taken as that in:
A. Tension
B. Bearing
C. Yield
D. Ultimate
Answer:
A
50. Which of the following is
the ratio of moment and stress
A. Strain
B. Section modulus
C. Contraction
D. Passions ratio
Answer:
B
51. What is the flexural stress
when of a symmetrically crosssection beam when the vertical
shear is maximum.
A.Infinity
B.Zero
C.Maximum
D. Minimum
Answer:
B
52. The riveted joint in ASME Code
has as design surface compressive
stress _____ higher than the design
tensile stress.
A.70%
B.60%
C.35%
D. 50%
Answer:
B
53. What is the ratio of the
minimum strength of solid joint
in the pressure vessel?
A. Efficiency
B. Relative strength
C. Performance factor
D. Joint efficiency
Answer:
B
54. What is the usual factor of
safety for a pressure vessel?
A. 4
B. 1.5
C. 3
D. 5
Answer: D
55. It is the permissible
variation of the size.
A. Tolerance
B. Limits
C. Fits
D. None of these
Answer:
A
56. Considering that there is no
fit, what is the permissible
liberal tolerance in machining
work?
A. ±0.010
B. ±0.090
C. ±0.020
D. ±0.050
Answer:
A
57. Which of the following is a
tolerance where the size of a
part may be larger only, or
smaller only, than the given
dimension.
A. Unilateral
B.Lateral
C.Bilateral
D. None of these
Answer:
A
58. A tolerance where the size
of a part is permitted to be
either larger or smaller than the
given dimension.
A. Unilateral
B. Lateral
C. Bilateral
Answer:
D. None of these
C
59. Which of the following is
the basis for ASA fits?
A. Basic number system
B. Basic hole system
C. Basic size system
D. Unit system
Answer: B
60. When the hole is smaller than the
shaft, it will take force or pressure to
put the cold parts together. In such
case the allowance is negative. Which
of the following terms is appropriate
for such allowance?
A. Negative fits of metals
B. Interference of metal
C. Positive fits of the shaft
Answer:
D.Intangible fits
B
61. What is the direction of the
following predominant surface
pattern?
A. Smoothness
B. Waviness
C. Lay
D. Roughness
Answer:
C
62. It is the irregularities of
departures from the nominal
surface of greater spacing than
roughness?
A. Waviness
B. Roughness
C. Lay
D. Smoothness
Answer:
A
63. It is the surface finish of
micrometer in rms.
A. 1
B. 2
C. 3
D. 4
Answer:
A
64. It is the process of pre-stressing
or over-stressing of a hallow
cylindrical member beyond the
elastic range.
A.Presstagge
B.Autofrettage
C.Stress relieving
D. Counter sinking
Answer:
B
65. It is the phenomenon
occurring when two touching
surfaces have a high contact
pressure and when these surfaces
have minute relative motion.
A.Prestressing
B.Fretting
C.Friction
Answer:
D. Carving
B
66. Which of the following
gears has the simplest type of
teeth?
A. Helical gears
B. Spur gears
C. Bevel gears
D. Worm gears
Answer:
B
67. In gears, an imaginary circle
on which the lever arm is based
in:
A. Base circle
B. Pitch circle
C. Addendum circle
D. Clearance circle
Answer:
B
68. It is the circle tangent to the
addendum to the addendum of
the meshing gears.
A. Clearance circle
B. Base circle
C. Addendum circle
D. Pitch circle
Answer:
A
69. The distance form a point
on one gear to the
corresponding point measured
along the base circle.
A. Normal pitch
B. Circular pitch
C. Axial pitch
D. Diametral pitch
Answer:
A
70. A line passing through the
pitch point that is tangent to
both base circle of a gear is:
A. Pressure line
B. Perpendicular line
C. Tangent line
D. Center line
Answer:
A
71. Which of the following is
the contract ratio for a good
gear design?
A. 1.5:1
B. 1:13
C. 1:3
D. 1.2:2
Answer:
A
72. In pressure vessels, which
of the following resists internal
pressure through tension?
A. Shell-type element
B. Carn type element
C. Plate-type element
D. Spherical type element
Answer:
A
73. In pressure vessels, which
of the following resists internal
pressure through bending?
A. Shell-type element
B. Carn type element
C. Plate-type element
D. Spherical type element
Answer:
C
74. Which of the following
flanges is suitable for low and
moderate pressure?
A. Ring-flange
B. Lap joint flange
C. Tapered-hub flange
D. Welding neck type
Answer:
A
75. It is the study of the body’s
motion independent of the
forces on the body.
A. Kinetics
B. Dynamics
C. Kinematics
D. Mechanics
Answer:
C
76. What is the reciprocal of
velocity ratio?
A. Train value
B. Ratio factor
C. Modular value
D. None of these
Answer:
A
77. It is a type of bolt finished
all over and has usually having
coarse threads.
A. Coupling bolt
B. Stud bolt
C. Machine bolt
D. Automobile bolt
Answer:
A
78. It is a type of bolt
distinguished by a short portion of
the shank underneath the head
being square or finned or ribbed.
A.Coupling bolt
B.Stud bolt
C.Machine bolt
D. Carriage bolt
Answer: D
79. It is a type of bolt threaded
on both ends and can be used
where a through bolt
impossible.
A. Coupling bolt
B. Carriage bolt
C. Stud bolt
D. Machine bolt
Answer:
C
80. It is a cheap variety of bolt
made in small sizes.
A. Stud bolt
B. Stove bolt
C. Machine bolt
D. Coupling bolt
Answer:
B
81. It is a locking device that is
used to maintain pressure
between threads of the bolt and
nut.
A. Gasket
B. Lock washer
C. Lock nuts
D. Filler
Answer:
B
82. What is the large wood
screw used to fasten machinery
and equipment.
A. Lag screw
B. Loss screw
C. Wood screw
D. Cross screw
Answer:
A
83. What is the minimum
length of contact in a tapped
hole for cast iron?
A. 1.7D
B. 1.5D
C. 1.2D
D. 2.1D
Answer:
B
84. It is the ratio of the mean
diameter of coil over the coil
diameter.
A. Wahl factor
B. Spring index
C. Coil ratio
D. Lead scale
Answer:
B
85. What is the overall length
of the spring when it Is
compressed until all adjacent
coils touched?
A. Free length
B. Solid length
C. Compressed length
D. Expansion length Answer:
B
86. It is the length of a coil
spring under no load.
A. Compressed length
B. Free length
C. Solid height
D. None of these
Answer:
B
87. In general, the steel springs
are made of relatively of
relative high carbon steel
usually:
A. 5%
B. Less than 0.5%
C. More than 0.5%
D. 7.5%
Answer:
C
88. It is a low cost spring
material , suitable where service
is not severe and dimensional
precision is not needed:
A. Helical spring wire
B. Stainless steel
C. Hard drawn wire spring
D. Copper
Answer:
C
89. What is the hard drawn
(80% reduction) spring wire
made of high carbon steel?
A. Oil tempered wire
B. Music wire
C. Tension wire
D. Chromium wire
Answer:
B
90. Which of the following
wires with good quality and is
used for impact loading.
A. Hard drawn wire
B. Cold drawn wire
C. Helical spring wire
D. Chromium-silicon wire
Answer: D
91. When heat treated wire is
coiled cold, it should be stress
relieved for bending stress and
after cooling it is heated at some:
A. 400⁰F
B.600⁰F
C.700⁰F
D. 500⁰F
Answer: D
92. Which of the following is
not a function of spring?
A. Absorbs energy
B. Source of potential
energy
C. weight
D. Measure thickness
Answer: D
93. Which of the following
is the type of spring made in
the form of dished washer?
A. Air spring
B. Bellevile spring
C. Volute spring
D. Motor spring
Answer:
B
94. What is the type of
failure due to unstability?
A. Buckling
B. Slenderness ratio
C. Stability
D. Euler’s failure
Answer:
A
95. What type of formula that
best applied to a very slender
column?
A. Column formula
B. Slenderness formulas
C. Moment formulas
D. Euler formula
Answer: D
96. Id two principal stresses
is zero, the state of stress is :
A. Biaxial
B. Mono-axial
C. Uniaxial
D. Triaxial
Answer:
C
97. What do you call the
system that have finite values of
principal stresses?
A. Triaxial
B. Uniaxial
C. Monoaxial
D. Biaxial
Answer:
A
98. A screw that requires
positive torque to lower the load
or to loosen the screw if it has
been turned tight against a
resistance
A. Power screw
B.Lock screw
C.Self screw
D. Self locking screw
Answer: D
99. What is the rotating
member used in transmitting
power?
A. Shaft
B. Counter shaft
C. Axle
D. Washer
Answer:
A
100. For machinery shafts, the
permissible deflection is
approximately:
A. 0.02 in/ft
B. 0.03 in/ft
C. 0.01 in/ft
D. 0.05 in/ft
Answer:
A
MACHINE ELEMENTS 09
Past ME Board Question
1. For shafts, the shear due to
bending is a maximum at the
neutral plane where the normal
stress is :
A. Minimum
B. Constant
C. Maximum also
Answer:
D. Zero
D
2. The minimum value of
numerical combined shock, and
fatigue factor to be applied in
every case to the computed
bending moment of the shaft is:
A.2.0
B.1.75
C.1.5
Answer: C
D. 1.3
3. What is the other name
given to short shafts on
machine
A. Spindles
B. Head shaft
C. Core shaft
D. All of these
Answer:
A
4. What is the other name
given to a line shaft?
A. Countershaft
B. Main shaft
C. Long shaft
D. Head shaft
Answer:
B
5. The speed at which the center of
mass will be equal the deflecting forces
on the shaft: the shaft with its attached
bodies will then vibrate violently, since
the centrifugal force changes its
direction as the shaft turns in:
A. Nominal speed
B. Critical speed
C. Relative speed
D.Mean speed
Answer:
B
6. An old rule of thumb for
transmission shafting is that the
deflection should not exceed ___
of length between supports.
A.0.01 in. per foot
B.0.08 in. per foot
C.0.02 in. per foot
D. 0.05 in. per foot
Answer:
A
7. For transmission shafts the
allowable deflection is 1 degree
in a length of ___ diameters.
A. 20
B. 25
C. 30
D. 40
Answer:
A
8. What is the limiting torsional
deflection for machinery shafts, if
the criteria of limiting torsional
deflection vary from 0.08⁰ per foot
of length.
A.1⁰
B.2.5⁰
C.2⁰
Answer:
D. 3.5⁰
A
9. Bevel gears of sizes 5 in. to
15 in. should not be lift or
depress more than ___ , as
Gleason statement.
A. 0.004
B. 0.003
C. 0.002
D. 0.001
Answer:
B
10. What type of key that
allows the hub to move along
the shaft but prevents the
rotation of the shaft?
A. Woodruff key
B. Feather key
C. Gibbs key
D. Square key
Answer:
B
11. What is the other name for
kennedy key?
A. Tangential key
B. Woodruff key
C. Saddle key
D. Roll pin
Answer:
A
12. What type of fits used for
involute spline?
A. Close fit
B. Press fit
C. Sliding fit
D. All of these
Answer: B
13. Which of the following is used
for permanent fits and similar to
involute splines except that the
pressure angle is 14.5⁰?
A.Separation load
B.Spline load
C.Stub serrations
D. Involute serrations
Answer: D
14. It is used a coupling, or in
addition to another couplings
where, in case of overload, there is
danger of injury to machine or to
material in process.
A.Shear pin
B.Flange coupling
C.Involute serrations
Answer:
D. King pin
A
15. What is the maximum shaft
angle for a single Hooke’s
coupling?
A. 10⁰
B. 17⁰
C. 15⁰
D. 20⁰
Answer:
C
16. What are the two principal
parts of a Journal Bearing?
A. Bearing and journal
B. Shaft and babbit
C. Clearance and fitted
D. Shaft and cylinder
Answer:
A
17. When the line of action of
the load bisects the arc of
partial bearing, the bearing is
said to be:
A. Eccentrically loaded
B. Fully loaded
C. Centrally loaded
D. Partially loaded
Answer:
C
18. What is the difference in
radii of the bearing and Journal?
A. Even clearance
B. Clearance ratio
C. Odd clearance
D. Radial clearance
Answer: D
19. When radii of both bearing
and the journal are the same,
then the bearing is said to be:
A. Fitted bearing
B. Clearance bearing
C. Full bearing
D. Ambiguous bearing
Answer:
A
20. What is the line that passes
through the centers of the bearing
and journals.
A.Line of action
B.Line of centers
C. Line of symmetry
D. Tangent line
Answer:
B
21. Which of the following is
considered advantageous for
bearing materials?
A. Conformability
B. Compatibility
C. embeddability
D. all of these
Answer: D
22. What is the recommend
coefficient of fluctuation of
flywheels for punching, shearing,
pressing machine?
A.0.005 – 0.1
B.0.007 – 0.01
C.0.03 – 0.05
D. 0.01 – 0.03
Answer:
A
23. Which of the following
considers the 200 series of
bearing?
A. Heavy
B. Medium
C. Light
D. All of these
Answer:
C
24. Which of the following
considers the 300 series of
bearing?
A. Heavy
B. Medium
C. Light
D. All of these
Answer:
B
25.A type of bearing in which the
balls are assembled by the
eccentric displacement of the
inner ring.
A.Shallow groove ball bearing
B.Filling-slot ball bearing
C.Self-aligning ball bearing
D. Deep-groove ball bearing
Answer: D
26. Which of the following is
not a type of ball bearing?
A. Shallow groove ball bearing
B. Filling-slot ball bearing
C. Self-aligning ball bearing
D. Deep-groove ball bearing
Answer:
A
27. What is the usual density of
the leather ball?
A. 0.035 lb/in3
B. 0.0135 lb/in3
C. 0.045 lb/in3
D. 0.0465 lb/in3
Answer:
A
28. Which of the following is
the approximate density of fat
rubber belt?
A. 0.035 lb/in3
B. 0.0135 lb/in3
C. 0.045 lb/in3eed
D. 0.0465 lb/in3
Answer:
C
29. A toothed wheel whose tooth
elements are straight and parallel
to the shaft axis or used to
transmit motion and power
between parallel shafts.
A.Helical gear
B.Spur gear
C.Worm gear
Answer:
D. Bevel gear
B
30. The breaking strength of
oak-tanned beltings varies from
3 to more than:
A. 5ksi
B. 6ksi
C. 7ksi
D. 9ksi
Answer:
B
31. Experience suggests that the
most economical designs are
obtained for a belt speed of:
A.6000 to 7500 fpm
B.3000 to 5000 fpm
C.3500 to 4700 fpm
D. 5000 to 1000 fpm
Answer:
A
32. The tension in the belt due
to centrifugal force increasing
rapidly above about:
A. 2500 fpm
B. 3000 fpm
C. 3500 fpm
D. 4000 fpm
Answer:
A
33. What is the recommended
speed for leather belts?
A. 6000 to 7000 fpm
B. 5000 to 6000 fpm
C. 7000 to 8000 fpm
D. 4500 to 5600 fpm
Answer:
C
34. What is the usual
recommended speed for fabric
belts?
A. 4000 to 5000 fpm
B. 3000 to 4000 fpm
C. 2000 to 3000 fpm
D. 2000 and more fpm
Answer: D
35. Which of the following is
the recommended initial
tension of the belt?
A. 75 lb/in of width
B. 73 lb/in of width
C. 71 lb/in of width
D. 80 lb/in of width
Answer:
C
36. Two shafts at right angles
to each other may be connected
by what arrangement?
A. Half turn
B. Quarter turn
C. ¾ turn
D. One turn
Answer:
B
37. Is the minimum number of
teeth on a smaller sprocket for
low speed?
A. 12
B. 21
C. 17
D. 14
Answer:
A
38.is the minimum number of
teeth on a smaller sprocket for
moderate speed?
A. 17
B. 21
C. 12
D. 14
Answer:
A
39. What is the usual minimum
number of teeth on a smaller
sprocket for high speed?
A. 21
B. 24
C. 12
D. 14
Answer:
A
40. Which of the following is
the measure of torsional stress?
A. Accuracy
B. Stiffness
C. Rigidity
D. Precision
Answer:
B
41. When tested in compression,
ductile materials usually exhibit___
characteristics up to the yield
strength as they do when tested in
tension.
A.The same
B.More than
C.Less than
D. Approximately the same
Answer:
D
42. A tolerance where the size
of a part is permitted to be
either larger or smaller than the
given dimension.
A. Bilateral
B. Unilateral
C. Lateral
D. None of these
Answer:
A
43. A fit generally used on
those dimensions involved in a
fit; such as pin in a hole.
A. Unilateral
B. Lateral
C. Bilateral
D. None of these
Answer:
C
44. It is relatively finely spaced
irregularities of the surfaces
A. Smoothness
B. Waviness
C. Lay
D. Roughness
Answer: D
45. Which of the following is
the surface finish of heavy cuts
or coarse feed?
A. 200 rms
B. 400 rms
C. 80 rms
D. 500or greater rms
Answer: D
46. Which of the following is
the most dominant cause
(approximately 80%) of
machine failures?
A. Torsion
B. Negligence
C. Fatigue failures
D. Compression
Answer:
C
47. For wrought steel in its commonly
met commercial forms, it is often
assumed that the average endurance
limit for an average S (50% survival(
with the Brinell Hardness is limited to:
A. 500
B. 400
C. 240
D.450
Answer:
B
48. What is the range of the
endurance ratio or Czaud
quotes values for steel?
A. 0.23 TO 0.65
B. 0.35 TO 0.87
C. 0.63 TO 0.93
D. 0.34 TO 0.45
Answer:
B
49. Which of the following
indicates the degrees of
concentration?
A. Power factor
B. Service factor
C. Stress factor
D. Stress concentration factor
Answer: D
50. The internal stresses the exist
in any part of the material that is
subjected to temperature and not
acted upon by an external load.
A.Residual stress
B.Form stress
C.Superposed stress
D. Control stress
Answer:
A
51. It is the process that cold
works a limited amount of
material, thus giving a higher
strength, and it leaves a surface
compressive stress.
A.Surface finishing
B.Tensioning
C.Surfacing
Answer:
D. Surface rolling
B
52. Fatigue strength is increased by
repeated loads just below the normal
fatigue limit, followed by small step
by step increase of the loading.
A. Coaxing
B. Triaxing
C. Mixing
D.Relieving
Answer:
A
53. It is the diameter of the
imaginary cylinder that bounds the
crest of an external thread and the
roots of an internal thread.
A.Mean diameter
B.Root diameter
C.Stress diameter
D. Major diameter
Answer: D
54. It is the distance in inches a
screw thread ( a helix) advances
axially in one turn.
A.Pitch
B.Mean pitch
C.Lead
D. Circular pitch
Answer:
C
55. Which of the following
bolts is recommended for
general use?
A. UNC
B. UNEF
C. UNF
D. NC
Answer:
A
56. Which of the following is
frequently used bolt in automotive
and aircraft industries.
A.UNC
B.UNEF
C.UNF
D. NC
Answer:
C
57. Which of the following is
particular bolt used in
aeronautical equipment.
A. UNC
B. UNEF
C. UNF
D. NC
Answer:
B
58. What type bolt usually used
for high-pressure pipe flanges,
cylinder head studs etc.
A. UNC
B. UNF
C. UNEF
D. 8 UN
Answer: D
59. It is the stress or load
induced by the tightening
operation.
A. Initial stress
B. Initial tension
C. Residual stress
D. None of these
Answer:
A
60. For non-metallic gaskets, it has
been found that they should have a
certain minimum amount of
compression as ___ for a certain cork
gasket.
A. 62%
B. 86%
C. 68%
D.76%
Answer:
A
61. It is a screw testing with a
nut on it.
A. Bolt
B. U-bolt
C. Rivet
D. Screw
Answer:
A
62. fastening which has no nut
and turns in to a threaded hole.
A. bolt
B. fastener
C. rivet
D. screw
Answer: D
63. Old name for an unfinished
through bolt comes with a
square.
A. Coupling bolt
B. Stud bolt
C. Machine bolt
D. Automobile bolt
Answer:
C
64. is a type of coil where the
helical coil is wrapped into a
circle forming an angular ring.
A. Volute spring
B. Hair spring
C. Motor spring
D. Garter spring
Answer: D
65. It is a type of spring where
thin flat strip wound up on
itself as a plane spiral, usually
anchored at the inside end.
A. Motor spring
B. Garter spring
C. Volute spring
D. Helical spring
Answer:
A
66. It is the ratio of the length
of the column and the radius of
gyration of the cross-sectional
area about a centroidal axis.
A. Contact ratio
B. Slenderness ratio
C. Centroidal ratio
D. Column ratio
Answer:
B
67. Under the theories of failure for
static loading of ductile material, the
design stress is:
A. Yield Stress / Factor of Safety
B. Ultimate Stress / Factor of Safety
C. Ultimate Stress / Proportional Limit
D.Yield Point / Proportional Limit
Answer:
A
68. Under theories of failure, the
value of shear stress is how many
times that of the tensile stress?
A.Four times
B.Half
C.Double
D. One-fourth
Answer:
B
69. The theory of mechanics of
material shows that the results
from the octahedral shear stress
theory and those from the
maximum distortion-energy theory
are:
A.The same
B.Less than
C.More than
D. Not related
Answer:
A
70. It is the measure axially from a
point on one thread to the
corresponding point on an
adjacent thread.
A.Axial pitch
B.Z – pitch
C.Lead
D. Lead angle
Answer:
A
71. It is the angle between a
tangent to the pitch helix and a
plane normal to the axis of the
screw.
A.Helix angle
B.Lead angle
C.Tangent angle
D. Vertical angle
Answer:
B
72. It is suggested that the design
factor on the yield strength be about
1.5 for the smooth load, about 2 to
2.25 for minor shock loading, and up to
______ for severe shock loads, especially
when the loading reverses during
operation.
A. 4.5
B. 3.5
C. 3.0
D.4.0
Answer:
A
73. A typical hub length fall
between __________.
A. 1.25D to 2.5D
B. 1.3D to 3.4D
C. 1.25D to 4.0D
D. D to 7.0D
Answer:
A
74. A key with one several
patented methods of keying is
driven or pressed into a hole that
is small enough to close the slit,
assembled in radial direction.
A.Fit key
B.Roll pin
C.Saddle key
Answer:
D. Pin key
B
75. A key that allow the hub to
move along the shaft but
prevents the rotation of the
shaft.
A. Woodruff key
B. Gibs key
C. Feather key
D. Square key
Answer:
C
76. For involute spline, the type
of fits used:
A. Close fit
B. Sliding fit
C. Press fit
D. All of these
Answer:
C
77. A coupling that transmits power
via the frictional forces induced by
pulling the flange toward each other
over slotted tapered sleeves.
A. Flange coupling
B. Ribbed compression coupling
C. Rigid coupling
D.Flanged compression coupling
Answer: D
78. A coupling used for absorbing some
shock and vibration that may appear on
one shaft and of preventing the
occurrence of reversed stresses caused by
the shaft deflecting at the coupling
preventing at the coupling.
A. Rigid coupling
B. Flange coupling
C. Flexible coupling
D. None of these
Answer:
C
79. It is the difference in the
radii of the bearing and the
journal.
A. Even clearance
B. Clearance ratio
C. Fit clearance
D. Radial clearance
Answer: D
80. A bearing in which the radii of
the journal and the nearing are the
same.
A.Fitted nearing
B.Full bearing
C.Partial bearing
D. Clearance bearing
Answer:
A
81. What is the approximate
length-to-diameter ratio of
hydrodynamic bearings?
A. 1
B. 4
C. 3
D. 2
Answer:
A
82. The operating temperature
of oil films in the bearing must
approximately:
A. 140°F to 150°F
B. 140°F to 160°F
C. 120°F to 190°F
D. 120°F to 190°F
Answer:
B
83. At higher temperatures, oil
oxidizes more rapidly above:
A. 120°F
B. 200°F
C. 140°F
D. 160°F
Answer:
B
84. For thrust bearing, the
speed at moderate operating
condition is:
A. 50 <Vm> 200 fpm
B. 50 <Vm> 250 fpm
C. 50 <Vm> 220 fpm
D. 50 <Vm> 250 fpm
Answer:
A
85. If the ends are joined by
wire lacing with machine, the
usual efficiency joint is:
A. 100%
B. 75%
C. 85%
D. 88%
Answer: D
86. high speed centrifugal blowers,
it has been observed that the arc
of contact is reduced from 180° at
rest to ______ in motion.
A.100°
B.90°
C.95°
D. 110°
Answer: D
87. The recommended net belt
pull for rubber bet is:
A. 11.34 lb/ply per inch of
width
B.13.75 lb/ply per inch of width
C.16.35 lb/ply per inch of width
D. 20.34 lb/ply per inch of
width
Answer:
B
88. For minimum quietness,
use sprockets with ______ or
more teeth.
A. 21
B. 23
C. 25
D. 27
Answer:
D
89. If two intersecting shafts
are to be belt connected _____
guide pulleys are to be used.
A. 1
B. 2
C. 3
D. 4
Answer:
B
90. Wire ropes are made from
cold-drawn with ______ or
more teeth.
A. 21
B. 23
C. 25
D. 27
Answer:
D
91. A wire rope that the wires
and strands are twisted in the
opposite direction.
A. Long lay
B. Perform
C. Regular lay
D. Lang lay
Answer:
C
92. A wire rope that the wires
and strand are twisted in the
same direction
A. Long lay
B. Perform
C. Regular lay
D. Lang lay
Answer:
D
93. Which of the following
ropes is used for haulage,
rigging, guard rails.
A. 6 x 35 IWRC
B. 6 x 15 IWRC
C. 7 x 8 IWRC
D. 7 x 7 IWRC
Answer:
D
94. Which of the following has
been considered as general
purpose rope?
A. 6 x 19 IWRC
B. 7 x 25 IWRC
C. 7 x 25 IWRC
D. 6 x 9 IWRC
Answer:
A
95. Which for the following
ropes is used for lines, hawsers,
overhead cranes and hoists.
A. 6 x 37 IWRC
B. 6 x 35 IWRC
C. 6 x 25 IWRC
D. 7 x 26 IWRC
Answer:
A
96. The regular materials
for wire ropes are made of:
A. Chromium
B. Wrought iron
C. Cast steel
D. High-carbon iron
Answer:
D
97. What is the minimum
suggested design factor of wire
ropes for miscellaneous hoisting
equipment is:
A. 2
B. 3
C. 5
D. 4
Answer:
C
98. To avoid excessive wear rate
the recommended limiting
pressure for 6 x 19 rope is
______ for cast steel.
A. 700 psi
B. 900 psi
C. 1000 psi
D. 1200 psi
Answer:
B
99. To avoid excessive wear rate
the recommended limiting
pressure for 6 x 19 rope is
______ for manganese cast steel.
A. 2500 psi
B. 2000 psi
C. 3000 psi
D. 2300 psi
Answer:
A
100. What friction devices that
are used to connect shafts?
A. Clutches
B. Spring
C. Brakes
D. Holders
Answer:
A
MACHINE ELEMENTS 10
Past ME Board Question
1. The total frictional energy
that is stored in the brake parts
principally in the drum or disk
is approximately:
A. 56% up
B. 90% up
C. 86% up
D. 75% up
Answer:
D
2. The brake capacity to absorb
energy is known as:
A. Energy
B. Power
C. Resistance brake
D. Braking torque
Answer: D
3. A kind of braking systems such
as that if the band wraps partly
around the brake drum, and the
braking action obtained by pulling
the band tight into the wheel.
A.Block brake
B.Clutch
C.Band brake
D. Centrifugal brake Answer: C
4. Which of the following
clutches that has a disadvantage
of heavier rotating masses.
A. Multiple disc clutch
B. Cone clutch
C. Disc clutch
D. Twin clutching
Answer: A
5. Which of the following welds
have been considered as resistance
weld which is usually round the
same dorm as the electrodes that
press the sheets together.
A.Edge joints
B.Spot welds
C.CIG welds
Answer: B
D. TIG welds
6. A welding which consists of
short lengths (2 – 3 in. long) of
welds with space between as 6
inches on centers.
A.Intermittent weld
B.Spot weld
C.MIG weld
D. TIG weld
Answer:
A
7. A welding operation that use
hot flame and metal rod.
A. Gas welding
B. Arc welding
C. Resistance welding
D. Automatic welding
Answer: A
8. The arc is covered with a
welding composition and bare
electrode wire is fed
automatically.
A. Resistance welding
B. Induction welding
C. Submerged welding
D. Spot welding
Answer: C
9. What is the recommended
coefficient of fluctuation of
flywheels for punching,
shearing, pressing machine.
A. 0.005 – 0.1
B. 0.002 – 0.07
C. 0.03 – 0.05
D. 0.01 – 0.03
Answer: A
10. The part of machine that
absorbs the energy delivered by
a sharp force or blow.
A. Spring
B. Anvil
C. Brakes
D. Flywheel
Answer: B
11. It is the friction of wheel
inclination from the vertical
position.
A. Camber
B. Toe-in
C. Caster
D. King pin inclination
Answer: A
12. Which of the following is a
machine which takes large quantities
of raw or finishes materials and binds
them with a rope or metal straps or
wires into a large package.
A. Bacher
B. Bending machine
C. Baler
D.Automatic screw machine
Answer: C
13. It is the gasping of an
outside work piece in a chunk
or a jawed device in a lathe.
A. Clucking
B. Clamping
C. Chucking
D. Clamshelling
Answer:
C
14. Which of the following is a
mechanical linkage or
mechanism that can turn about
a center or rotation.
A. Oscillation
B. Crank
C. Coupler
Answer:
D. Drag link
B
15. What type of compound
screw which produces a motion
equal to the difference in
motion between the two
component screws.
A. Machine screw
B.Tanden screw
C.Differential screw
D. Variable screw
Answer:
C
16. Which of the following
bolts provided with a hole at
end instead of usual head.
A. Stud bolt
B. Eye bolt
C. Machine bolt
D. Stove bolt
Answer:
B
17. What operation generally
carries out to divide the parent
coiled sheet into narrower coils?
A. Slotting
B. Squeezing
C. Squaring
D. Slitting
Answer: D
18. It is the process used to form
shallow, round, raised recessed
troughs of uniform width in a
straight curve or circular form.
A. Hemming
B.Beading
C.Embossing
D. Buldging
Answer: B
19. The process of removing excess
metal from the edge of a strip to make
it suitable for drawing without
wrinkling or to obtain final
complicated shape which was not
directly possible by blanking.
A. Lancing
B. Slugging
C. Notching
Answer:
D.Trimming
C
20. Which of the following is
the process of removing coarse
scratches or tool marks?
A. Polishing
B. Buffing
C. Honing
D. Lapping
Answer:
A
21. Which of the following
ropes is galvanized and consists
of 6 strands, 7 wires each and a
hemp core?
A. Reverse lay rope
B. Guy rope
C. Lang lay rope
D. Regular rope
Answer:
B
22. It is a large lathe used for
turning and boring cannons.
A. Gun lathe
B. Engine lathe
C. Cannon lathe
D. Turret lathe
Answer:
A
23. What device on a lathe
machine used for carrying the
revolving spindle?
A. Head stock
B. Header
C. Head suction
D. None of these
Answer:
A
24. The recommended means of
supporting the chuck during the
mounting procedure to the lathe
spindle is to use:
A.Crane
B.Jack
C.Overhead
D. Ratchet
Answer:
D
25. Too much ______ in a flat
belt operation tend to cause
excessive wear slippage and
may burn the belt.
A. Play
B. Slack
C. Stiffness
D. Tightness
Answer: D
26. It is a chromium steel tape
in AISI-SAE designation.
A.10XX
B. 25XX
C. 50XX
D.40XX
Answer:
C
27. Which of the following is
not recommended for use in a
driving speed exceeding 2000 ft/
min?
A. Flat leather belt
B. Herring bone gear
C. Silent sprocket
D. V-belt
Answer: A
28. It is a low cost bearing used
worldwide for automobile or low
horsepower motor applications. It
is made of thin coating of over flat
metal strip.
A.Babbitt
B.Cadmium brass
C.Lead
Answer:
D. Tin
A
29. The most common useful tools
to measure diameter machine
shop operation but normally and
always steel case for measurement.
A.Caliper
B.Micrometer
C.Protractor
D. Vernier
Answer: A
30. In impact force introduced
to cause the metal to flow in a
shaped mold according to the
shape to dies made.
A. Hardness
B. Spinning
C. Swaging
D. Toughness
Answer:
C
Answer:
A
32. Forces of equal in
magnitude but opposite in
direction are parallel called:
A.Acceleration
B. Coplanar
C. Couple
D.Non-coplanar
Answer:
C
33. Composition of force is
at the ____ of two or more
forces.
A.Combination
B. Opposition
C. Resultant
D.Summary
Answer:
C
34. Circular pitch is
measured along the _______
in the circular gear.
A.Circle
B. Line of action
C. Pitch center
D.Pitch diameter Answer:
C
35. Stiffness is the material’s
ability to _______
deformation under stress.
A.Non-planar
B. Planar
C. Resist
D.Stafer
Answer:
C
36. It imparts the ductility,
toughness and plasticity of
steel.
A.Annealing
B. Materializing
C. Quenching
D.Tempering
Answer:
D
37. Which of the following
types of wood is usually used in
making wood pattern in the
foundry?
A. Dried sap wood
B. Hard wood
C. Kiln dried wood
D. Scrap wood
Answer: A
38. The progressive change
in position of ______ called
motion.
A.Component
B. Couple
C. Link
D.Mass
Answer: D
39. Strain or ________ is a
change in geometry/shape of
the body due to action of a
force on it.
A. Bending stress
B. Deformation
C. Shear stress
D. Stress
Answer:
B
40. The effective width of a
helical gear divided by the axial
pitch. This is sometimes called
face overlap.
A. Angle overlap
B. Axial overlap
C. Contact overlap
D. Helical overlap
Answer:
D
41. For mass production of
casting it is generally cheaper to
use ______ pattern for longer
life.
A. Aluminum
B. Brass
C. Metal
D. Wooden
Answer:
C
42. It is a plane between mating
teeth or the amount of which a
tooth space exceed the thickness
of an engaging tooth is called:
A. Backlash
B. Clearance
C. Pitting
D. Space
Answer:
A
43. The forces that can be
combined or called _______
component forces.
A.Different
B. Helical
C. Opposite
D.Parallel
Answer:
A
44. Plane of rotation is
defined as plane
perpendicular to a:
A.Gear axis
B. Gear ratio
C. Normal plane
D.Pitch diameter Answer:
A
45. Which of the
following can be a
concurrent?
A. Collinear
B. Couple
C. Parallel
D.All of these
Answer:
A
46. Cutting lubricant used in
drilling reaming and tapping
for brass and bronze.
A. Dry
B. Soda water
C. Soluble oil
D. Turpentine
Answer:
A
47. The general accepted limit
of diamond wheel speed should
be in the range of ________ fpm.
A. 1000/2000
B. 2500/3500
C. 3000/4000
D. 5000/6000
Answer: D
48. Prepared tool bit will
now consist of face, nose
and:
A. Cutting tool
B. Shank
C. Sharp tool
D. Tool edge
Answer:
B
49. This is an alloy in bronze
casting that assists
lubrication and in itself a
lubricant.
A. Lead
B. Manganese
C. Phosphorus
D. Tin
Answer:
A
50. For longer sprocket
chain life the speed range of
_____ fpm is recommended.
A. 1200-1400
B. 1500-1600
C. 1800-2000
D. 2000-2100
Answer:
A
51. All stainless steel type is
SAE designation except:
A. 92XX
B. 300XX
C. 304XX
D. 515XX
Answer: A
52. It is white metal with good
oxidation and corrosion
resistance. This has also good
electrical magnetic properties.
A. Aluminum
B. Copper
C. Nickel
D. Titanium
Answer:
C
53. It is a molybdenum
steel-tape in AISI-SAE
designation.
A. 44XX
B. 45XX
C. 50XX
Answer:
D.51XX
A
54. Cutting lubricants used in
drilling, reaming and tapping
for hard spots in cast iron.
A. Dry
B. Kerosene
C. Soda water
D. Turpentine
Answer:
A
55. In a _____ design, the
lead of a single thread is
equal to the pitch.
A. Bevel gear
B. Bolt
C. Helical gear
D. Hypoid gear
Answer:
B
56. A type of chisel used in
cutting of keyways, square
corners or slots.
A. Cape
B. Diamond head
C. Flat
D. Round
Answer:
A
57. The maximum
recommended ideal number of
teeth to use for bigger sprocket
is:
A. 120
B. 127
C. 132
D. 143
Answer:
A
58. A bolt of general application
that possesses a stronger thread
is a type of ______ screw.
A. BUN
B. UNC
C. UNEF
D. WOOD
Answer: B
59. Maximum moment formula
for beam simply supported at both
ends and subjected to a load
uniformly distributed over its
length.
A. wL/2
B. wL²/8
C. wL²/16
Answer: B
D. wL/12
60. What is the special
bearing used with high
deflection?
A. Babbitt
B. Ball
C. Roller
Answer: D
D. Self aligning
61. Which of the following
bearing is used for low and les
expensive production?
A. Babbitt
B. Ball bearing
C. Roller bearing
D. Self aligning
Answer: B
62. The lateral strain in axial
tension members can be
calculated by:
A. Deformation
B. Hooke’s Law
C. Poisson’s ratio
D. Willan’s line
Answer:
B
63. It is abundantly used
worldwide as coating on top
of the plate of automobiles.
A. Babbitt
B. Lead
C. Manganese
D. Tin
Answer:
B
64. A liquid metal at room
temperature.
A. Aluminum
B. Mercury
C. Zinc
D. Zirconium
Answer:
B
65. It is a steel with SAE
specification 13XX.
A. Chromium
B. Manganese
C. Molybdenum
D. Nickel
Answer:
B
66. Property, which enables
a material to be drawn into
a wire.
A. Ductility
B. Elasticity
C. Plasticity
D. Utility
Answer:
A
67. The stress that causes
the material to shorten.
A. Bearing
B. Compressive
C. Shear
D.Tensile
Answer:
B
68. The most known lubricants
being utilized in whatever
category of load and speed are
oil, grease and dry lubricants
like:
A. Bronze
B.Graphite
C.Lead
D. Silicon
Answer:
B
69. It is a gear commonly used in
parallel shaft transmission
especially when a smooth
continuous action is essential as in
high speed drives up to 12,000 fpm.
A.Bevel gear
B.Helical gear
C.Herringbone gear
D. Spur gear
Answer:
C
70. The reciprocal of a
diametral pitch or the ratio of
the pitch diameter to the
number of teeth.
A. Clearance
B. Involute
C. Lead
Answer: D
D. Module
71. What tool(s) will be used in
making wood pattern in the
foundry shop?
A. Band saw
B. Drill machine
C. Hammer
D. Saw and chisel
Answer: D
72. Type of bolt commonly
used in the construction that is
threaded in both ends.
A. Acme threaded bolts
B. Hex bolt
C. Square threaded
D. Stud bolt
Answer: D
73. Ability of a material to
absorb strain energy and will
return to its original state.
A. Creep
B. Fatigue strength
C. Hardness
D. Resilience
Answer: D
74. The ratio of lateral
strain to longitudinal strain.
A. Deformation
B. Modulus of elasticity
C. Poisson’s ratio
D. Willan’s line
Answer:
C
75. Basic size is the same as
design size if there is no:
A. Allowance
B. Clearance
C. Limits
D. Tolerance
Answer:
A
76. Forces that meet at a
common point are called:
A. Co-linear
B. Concurrent
C. Coplanar
D.Couple
Answer:
B
77. A pair of equal and
opposite (not collinear) forces
that tend to cause a rotation of
a body.
A. Centroids
B. Couple
C. Equilibrium
D. Vector
Answer:
B
78. Stress that resist
being pulled apart.
A. Compressive
B. Shear
C. Tensile
D.Torsional
Answer:
C
79. What is the term
applied to dynamic seals?
A. Gasket
B. Packing
C. Seal
D.Shield
Answer:
B
80. Which type of hardening
will work to some extent in all
metals?
A. Annealing
B. Austenitizing
C. Martempering
D. Work hardening
Answer: D
81. What do impact tests
determine?
A. Creep strength
B. Hardness
C. Toughness
D. Yield strength
Answer:
C
82. Sound travels fastest in:
A. Air at 0˚F and 1 atmosphere
B. Air at 70˚F and 1 atmosphere
C. Air at 70˚F and 0 lbf/in2
D. Steel at 70˚F
Answer: D
83. The yield strength of
common yellow brass (70%Cu,
30%Zn) can be increased by:
A. Annealing
B. chill casting
C. Cold working
D. Heat treatment
Answer:
C
84. How do you call the
forces not lie on the same
plane?
A. Component
B. Composition of forces
C. Non-coplanar
D. Resolution
Answer:
C
85. The distance between the
center of oscillation and the
point of suspension is called:
A. Fix axis
B. Center of gravity
C. Center of percussion
D. Radius of oscillation
Answer: D
86. If the velocity is variable
and regularly/constantly
increasing the rate of change is
called:
A. Acceleration
B. Constant work
C. Moment
D. Motion
Answer:
A
87. The kinematics chain in which
one link is considered fixed for the
purpose of analysis but motion is
possible in other links.
A.Belting
B.Frame
C.Mechanism
D. Sprocket chain
Answer:
B
88. All forces in the same
plane are called:
A. Coplanar
B. Couple
C. Parallel
D. Resultant
Answer:
A
89. The ______ is one of the
rigid members/bodies joined
together to form a kinematic
chain.
A. Coplanar
B. Frame
C. Link
D. Machine
Answer:
C
90. The resultant of a pair of
equal forces but opposite in
direction is called _____.
A. Concurrent
B. Couple
C. Non-concurrent
D. Resultant
Answer: B
91. The helical and herringbone gear
teeth cut after heat treatment should
have a hardness in the range of
210/300BHN. The pinion gear teeth
hardness on the other hand, ideally/
normally should be at ___ BHN.
A. 250/320
B. 350/380
C. 400/345
Answer: D
D.340/350
92. As a rule the center to center
distance between sprockets should not
be less than ____ times the diameter
of the bigger sprocket and not less
than 30 times the pitch nor more than
about 50 times to pitch.
A. 1.5
B. 2
C. 2.5
Answer:
D.3
A
93. What is the carbon content
range of SAE 4140 chrome-moly
steel after heat treatment?
A. 0.30/0.45
B. 0.38/0.43
C. 0.38/0.45
D. 0.30/0.50
Answer:
B
94. Gears are manufactured
usually in the following
processes: milling, generating,
shaving, grinding and:
A. Blanking
B. Drinking
C. Heat treatment
D. Molding
Answer:
A
95. Flat belt that is tight will
induce strain on the bearing
and belt ________.
A. Life will be shortened
B. Result to uneconomical
operation
C. Suffer/shatter
D. Will be sheared/cutAnswer:
A
96. The resulting crosssectional area of the tensile test
specimen divided by the
specimen original area is called:
A. Charpy test
B. % elongation
C. Impact test
D. Izod test
Answer:
B
97. SAE 51XXX belongs to
the ______ steel family.
A. Carbon
B. Chromium
C. Manganese
D. Nickel
Answer:
B
98. Which of the following
gasket material which should
avoid hot liquid/steam
applications?
A. Asbestos fiber
B. Nylon fiber
C. Rubberized
D. Wool
Answer:
C
99. Which of the following that
describes the same material
properties all over/direction and at
any particular point in a structural
member?
A.Heterogenous
B.Homogenous
C.Isentropic
Answer: D
D. Isotropic
100. Arc produced by two
tungsten electrodes into which
a jet of hydrogen is directed.
A. Atomic hydrogen welding
B. Electro-beam welding
C. Hydrogen bomb
D. Hydrogen lancing
Answer:
A
MACHINE ELEMENTS 11
Past ME Board Question
1. A white metal, almost as
bright as silver and is malleable
and ductile and can be welded.
A. Nickel
B. Aluminum
C. White iron
D. Lead
Answer:
A
2. It is a silvery dull, soft
metal and the second
lightest of all metals used in
the industry.
A. Nickel
B. Aluminum
C. White iron
D. Lead
Answer: B
3. The least among iron ores for
it contains many impurities,
poor iron content and
commonly used in England.
A. Hemalite
B. Magnetite
C. Limanite
Answer:
D. Siderite
D
4. Which of the following is
not considered to be
precious metal?
A. Silver
B. Gold
C. Platinum
D. Steel
Answer: D
5. It is an alloy of copper
and zinc. It is approximately
1/3 zinc and 2/3 copper.
A. Brass
B. Bronze
C. Muntz metal
D. Silver
Answer:
A
6. It is a copper tin alloy
and is named either bell
metal or brown metal.
A. Brass
B.
Bronze
C. Muntz metal
D. Silver
Answer:
B
7. It is a furnace that converts pig
iron into steel by oxidizing out the
surplus carbon and using oxygen
by throwing raw iron ore into the
furnace.
A.Open-hearth surface
B.Electric surface
C.Cupola
Answer:
D. Bessemer
A
8. The most commonly-used series
in the bulk production of bolts,
screws, nuts and other general
applications in the coarse-thread
series.
A.UNC
B.UNF
C.White Iron
Answer:
D. Lead
A
9. What is the actual torque
ratio of a gear set divided by
its gear ratio?
A. Approach ratio
B. Clearance
C. contact ratio
D. efficiency
Answer: D
10. Which of the following has
low efficient of expansion,
corrosion resistant, weak in
strength, and used for non-ferrous
applications as an alloying element?
A.Aluminum
B.Aluminum oxide
C.Copper oxide
Answer:
D. Copper
A
11. Which of the following
material(s) is recommended for
large sprocket of large speed
ratio and having fewer
engagement?
A. Nickel-aluminum steel
B.Copper
C.Cast iron
D. Aluminum
Answer:
C
12. In which of the following
carrying capacity where roller
bearing is utilized better than
ball bearing?
A. Heavy load
B. High temperature load
C. Low load
Answer:
D. Reversing load
A
13. Which of the following
materials having thermal expansion
of about 10 times higher than those
of metals and has more heat
generated during machining?
A.Aluminum
B.Asbestos
C.Plastic
D. PVC
Answer:
C
14. To avoid scoring in the bearing surface
and th shaft due to contamination/
absorption of the fine dirt in the bearing
during operation/lubrication the bearing
material to apply should have good
________ properties.
A. Abti-scoring
B. Corrosion resistance conformability
C. Corrosion resistance
D. Embeddability
Answer: D
15. What is impact tests
measure?
A. Compactness
B. Ductility
C. Plasticity
D. Toughness
Answer: D
16. Which of the following
types of gear transmit power
at a certain angle?
A. Bevel
B. Helix
C. Herringbone
D. Spur
Answer:
A
17. Which of the following
gasket material is not used
for high temperature?
A. Asbestos
B. Plastic nylon
C. Rubberized
D. Wool
Answer:
C
18. How do you call a plane
perpendicular to the gear axis?
A. Normal plane
B. Pitch plan
C. Plane of rotation
D. Radius of gyration
Answer:
C
19. Which of the following is
the specification of
molybdenum alloy?
A. SAE 3XXX
B. SAE 4XXX
C. SAE 5XXX
D. SAE 6XXX
Answer:
B
20. Which of the following
is abundant for ferrous
metals?
A. Sulfur
B. Phosphorous
C. Manganese
D. Carbon
Answer: D
21. What machine is used to
flatten surface on a vertical,
horizontal or even angular
plane?
A. Shaper machine
B. Power saw
C. Boring machine
D. Drilling machine Answer:
A
22. All of these are
classifications of iron ore;
except what?
A. Magnetite
B. Hematite
C. Siderite
D. Sulfurite
Answer: D
23. It refers to the internal
resistance of a material to being
deformed and is measured in
terms of the applied load.
A. Stress
B. Strain
C. Ductility
D. Malleability
Answer:
A
24. The property of a material
which resists forces acting to
pull the material apart.
A. Tensile strength
B. Compressive strength
C. Bending strength
D. Torsional strength
Answer:
A
25. The property of a material
which resists forces from causing a
member to bend or deflect in the
direction in which the load is
applied.
A.Bending strength
B.Compressive strength
C.Tensile strength
Answer:
D. Torsional strength
A
26. The property of a material
to resist various kinds of rapidly
alternating stresses.
A. Fatigue strength
B. Bending strength
C. Compressive strength
D. Impact strength
Answer:
A
27. The ability of a material to
resist loads that are applied
suddenly and often at high
velocity.
A. Fatigue strength
B. Bending strength
C. Compressive strength
D. Impact strength
Answer:
D
28. The ability of a material to
stretch, bend, or twist without
breaking or cracking.
A. Ductility
B. Malleability
C. Hardness
D. Compressibility
Answer:
A
29. Which of the following is
considered to be the father of
all machine tool?
A. Lathe machine
B. Boring machine
C. Drilling machine
D. Milling machine
Answer:
A
30. It is the ability of a material
to resist loads that are applied
suddenly and often at high
velocity.
A. Fatigue strength
B. Impact strength
C. Hardness
D. Shock strength
Answer:
B
31. A steel of carbon range of 0.05
to 0.03 percent is considered as
what type of steel?
A.Low carbon steel
B.High carbon steel
C.Medium carbon steel
D. Very high carbon steel
Answer:
A
32. A steel of carbon range of
0.30 to 0.45 percent is
considered as what type of
steel?
A. Low carbon steel
B. High carbon steel
C. Medium carbon steel
D. Alloyed steel
Answer:
C
33. A steel of carbon range of
0.45 to 0.75 percent is
considered as what type of steel?
A. Low carbon steel
B. High carbon steel
C. Medium carbon steel
D. Alloyed steel
Answer:
B
34. A steel of carbon range of
0.75 to 1.7 percent is considered
as what type of steel?
A. Low carbon steel
B. High carbon steel
C. Medium carbon steel
D. Very high carbon steel
Answer: D
35. Which of the following alloying
element of steel will tend to increase its
strength without decreasing its toughness
or ductility and with its large quantities
the steel become tough but develop high
resistance to corrosion and shock?
A. Chromium
B. Manganese
C. Molybdenum
D. Nickel
Answer: D
36. Which of the following alloying
elements of steel will produce the
greatest hardening effect like
carbon and at the same time
reduces the enlargement of its
grain structure.
A.Chromium
B.Manganese
C.Molybdenum
D. Nickel
Answer:
C
37. Which of the following
alloying elements of steel will
produce fine grain structure and
promotes greater toughness and
ductility?
A.Chromium
B.Manganese
C.Molybdenum
Answer: B
D. Nickel
38. Which of the following
alloying elements of steel which
makes it extremely hard and
resistance to wear without making
it brittle?
A.Chromium
B.Manganese
C.Molybdenum
Answer:
D. Nickel
A
39. It is the element used mostly
in steels designed for metal cutting
tools. The steels added by this
element are tough, hard and very
resistant to wear.
A.Chromium
B.tungsten
C.Molybdenum
Answer:
D. Nickel
B
40. It is the element whose chief
function is to strengthen the
ferrite. It is used with tungsten to
develop red hardness or the ability
to remain hard when red hot.
A.Chromium
B.Cobalt
C.Molybdenum
Answer:
D. Nickel
B
41. It is also known as strain
drawing. It is the process whereby
certain degree of hardness is
sacrificed in order to reduce
brittleness and increase the
toughness of steel tool.
A.Tempering
B.Normalizing
C.Annealing
D. Quenching
Answer:
A
42. It is the heat treatment of
steel that produces extremely hard
surface. The process consists of
exposing the steel to hot ammonia
gas for some hours.
A.Nitriding
B.Cyaniding
C.Carburizing
Answer:
D. Ammonia bath
A
43. How do you call the metals
that contain large amount of
carbon content?
A. Ferrous metals
B. Non-ferrous metals
C. Base metals
D. Precious metals
Answer:
A
44. All metals are basic
kinds of cast iron, except:
A. Gray iron
B. Malleable iron
C. White iron
D. Red iron
Answer:
A
45. Which of the following basic
kind of cast iron is harder and
more difficult to machine because
it contains carbon in carbide state?
A.Gray iron
B.Malleable iron
C.White iron
D. Wrought iron
Answer:
C
46. How do you call metals
that have no carbon content?
A. Ferrous metals
B. Malleable metals
C. Non-ferrous metals
D. White iron
Answer:
C
47. Which of the following is
the type of cast iron that can
stand more shock and blows
than regular iron?
A. Nodular iron
B. Malleable iron
C. Wrought iron
D. Gray iron
Answer:
A
48. It is a metal of almost pure iron,
ductile and very tough. It can be
hammered and shaped at high
temperature. It has fibrous
structure because of the presence of
slag.
A.Nodular iron
B.Malleable iron
C.Wrought iron
D. Gray iron
Answer:
B
49. A type of ferrous metal which is
formed by remelting pig iron and
scrap iron in a cupola furnace. It is
brittle and usually gray in color,
and commonly used in making
casting.
A.Cast iron
B.Malleable iron
C.Wrought iron
D. Gray iron
Answer:
A
50. A classification of iron ore
which contains 70% iron when
pure and 50% iron when mined.
A. Hematite
B. Magnetite
C. Limonite
D. Siderite
Answer:
A
51. A classification of iron ore
which contains 72.5% iron
when pure and the remaining
percentage are impurities.
A. Hematite
B. Magnetite
C. Limanite
D. Siderite
Answer:
B
52. Which of the following iron
ores also known as “brown
hematite” or ferric oxide a
yellowish brown powder?
A. Hematite
B. Magnetite
C. Limanite
D. Siderite
Answer:
C
53. Which of the following
represents manganese steel?
A. 13XX
B. 40XX
C. 50XX
D. 10XX
Answer:
A
54. It is another kind of furnace
where cast iron is remelted to
make into cast iron. The furnace is
charges with layers of coke and pig
iron plus scrap iron.
A.Open-hearth furnace
B.Electric furnace
C.Cupola
Answer:
D. Bessemer
C
55. A furnace which is consists of blowing a
stream of air through a molten mass of iron pig.
A stream of air is turned on through the wind
box and enters the converter at the bottom.
Manganese, carbon, and other elements of
varying amounts are added to produce steel
which is then poured and solidifies.
A. Open-hearth furnace
B. Electric furnace
C. Cupola
D. Bessemer
Answer: D
56. A furnace similar to open-heart.
The principal difference is the method
of heating the charged. It is used in
producing quality of steels because
melting and refining is closely
controlled.
A. Open-hearth furnace
B. Electric furnace
C. Cupola
Answer:
D.Bessemer
B
57. It is the process of reheating or
drawing of metal that has been
hardened to a comparatively low
temperature in order to relieve the
hardening strain and increase the
toughness of the steel.
A. Tempering
B. Annealing
C. Cyaniding
Answer:
D.Normalizing
A
58. Case hardening is the process of
hardening the outer surface of the
metal and the inner parts are soft.
What percentage of carbon content
that this type of hardening is allowed?
A. 15% and above
B. 10-20% only
C. Less than 5% only
D.Any of the following
Answer:
A
59. A steel numbered SAE-AISI,
C1018 and contains 0.10% to
0.30% carbon.
A. Low carbon steel
B. Medium carbon steel
C. High carbon steel
D. Very high carbon steel
Answer:
A
60. A steel numbered SAE-AISI,
C1035 when not rolled and
contains 0.30% to 0.60% carbon.
A.Low carbon steel
B.Medium carbon steel
C.High carbon steel
D. Very high carbon steel
Answer:
B
61. A steel numbered SAE-AISI,
C1035 when not rolled and
contains 0.60% to 1.30% carbon
and used when extra hardness is
required.
A.Low carbon steel
B.Medium carbon steel
C.High carbon steel
D. Very high carbon steelAnswer:
C
62. Which of the following
allowing elements used in
making high speed steel?
A. Molybdenum
B. Nickel
C. Manganese
D. Silicon
Answer:
A
63. Which of the following
alloying elements used in
springs to make more reliant?
A. Silicon
B. Tungsten
C. Hardness and resistance
D. Nickel
Answer:
A
64. It refers to that property in steel
which resist indention or penetration.
It is usually expressed in forms of the
area of an indention made by a special
ball under a standard load or depth of
a special indentor.
A. Hardness
B. Ductility
C. Malleability
Answer:
D.Wear resistance
A
65. The distance from a point
on a screw thread to a
corresponding point on an
adjacent thread, measured
parallel to the axis.
A. Pitch
B.Lead
C.Thread
D. Crest
Answer:
A
66. The top surface joining
the two sides of a thread.
A. Pitch
B. Crest
C. Lead
D. Space
Answer:
B
67. The amount of variation permitted
in the size of a part. It is the difference
between the limits of maximum and
minimum dimensions of a given part.
It may be expressed at plus, minus, or
as both plus or minus.
A. Tolerance
B. Limits
C. Variation
Answer:
D.Clearance
A
68. The instrument used to
reshape a grinding wheel that is
grooved or out of round is
called a:
A. Wheel aligner
B. Wheel emery
C. Wheel dresser
D. Wheel cutter
Answer:
C
69. The instruments used to
remove old packing from
packing glands and stuffing
boxes are called:
A. Packing tools
B. Gland box cleaners
C. Packing bits
D. Packing screws
Answer:
A
70. When working on bearings
and checking for high spots, it is
customary to apply what?
A. White lead
B. Dykem blue
C. Red lead
D. Prussian blue
Answer: D
71. If you wanted to check the
face of a pimp slide valve or
other flat-faced valve, you could
check for trueness on a :
A. Flat board
B. Piece of glass
C. Surface plate
D. Bearing plate
Answer:
C
72. Which of the following
is used to keep a metal clean
while soldering?
A. Flax
B. Flux
C. Torch
D. Insulated
Answer:
B
73. Before splicing electric
wires, they should be:
A. Tinned
B. Soldered
C. Cleaned and tinned
D. Insulated
Answer:
C
74. To check the speed of a
motor or other rotary machine,
one would use a:
A. Galvanometer
B. Tachometer
C. Micrometer
D. Geiger counter
Answer:
B
75. Before drilling a hole in
a piece of metal, it should
be:
A. Marked with chalk
B. Scribed
C. Center-punched
D. Protracted
Answer:
C
76. A tap or die marked ¼ - 20
indicates:
A. ¼’’ radius – 20 cm long
B. 1/4’’diameter–20 threads
per in
C. ¼ ‘’ radian – 20 threads per
in
D. ¼’’ turn – 20 times Answer:
B
77. After a piece of pipe has
been cut, the hole is cleaned
out with a:
A. Piper reamer
B. Pipe taper
C. Pipe cleaner
D. Hole cleaner
Answer:
A
78. How do you call the tool(s)
used for cutting pipe threads?
A. Pipe cutter
B. Pipe threader
C. Pipe stock and die
D. Pipe ratcher cutter
Answer:
C
79. How do you call the tool
used when working with
larger sizes of pipe?
A. Chain pipe wrench
B. Chain holder
C. Chain tongs
D. A or B
Answer: D
80. What tool is used when
preparing to put fittings on
copper tubing?
A. Tube spreader
B. Tube retarder
C. Flaring tool
D. Tube countersink
Answer:
C
81. Which of the following
is not a standard thread
form?
A. Square
B. Double flute
C. American national
D. 60 deg. Sharp V Answer:
B
82. How do you call the tool
used to cut threads in a hole?
A. Top
B. Bit
C. Tap
D. Reamer
Answer:
C
83. Hand taps are provided in
sets of three. Which of the
following set of three?
A. Taper, plug and end
B. Taper, plug and bottom
C. Short, taper and bottom
D. Short, medium and long
Answer:
B
84. Which of the following
taps should be used to start
a thread?
A. Plug
B. Bottom
C. Short
D. Taper
Answer: D
85. Which of the following size
of the drill is used in preparing
to tap a hole?
A. Equal to the size of the tap
B.Larger than the size of the tap
C.Smaller than the size of the
tap
D. None of the above
Answer:
C
86. Pipe taps are:
A. The same size from end to
end
B. Tapered
C. Not fluted
D. Not hardened
Answer:
B
87. When preparing to tap a
hole for a pipe fitting the size of
the drill will be:
A. Larger than the tap size
B. Smaller than the tap size
C. Equal to the size of the tap
size
D. None of the above Answer:
A
88. Which of the following
does not have to be
lubricated when drilling?
A. Steel
B. Monel
C. Brass
D. Tool steel
Answer:
C
89. How do you call the tool
used when cutting a hole in the
side of a round piece of metal?
A. Vise
B. “V” block
C. Jaw holder
D. Chuck
Answer:
B
90. When measuring a
drill for size measure
across the:
A. Margins
B. Shank
C. Flutes
D.Point
Answer:
A
91. In threaded members,
which of the following
defines N.C.?
A. Neutral cut
B. National cut
C. National coarse
D. Not center
Answer:
C
92. In threaded members.
Which of the following
represents N. F.?
A. National file
B.
Neutral file
C.
National fine
D. Not found
Answer:
C
93. What tool is used in
precision work to smooth or
enlarge holes?
A. Round cut
B. Reamer
C. Drift pin
D. Protractor
Answer:
B
94. Which of the following
chisels would be used for
cutting oil grooves?
A. Diamond-point chisel
B. Round-nose chisel
C. Cold chisel
D. Hot chisel
Answer:
B
95. Which of the
following is not a cut of
file?
A. Smooth
B. Half-round
C. Second cut
D.Bastard
Answer:
B
96. do you call the tool
used for cleaning files?
A. File cleaner
B. File oilstone
C. File card
D.Scraper
Answer:
C
97. Which of the following is
the smallest size drill?
A. # 80
B. #1
C. # 60
D. # 0
Answer:
A
98. Which of the
following is the largest
size drill?
A. A
B. Z
C. X
D.XX
Answer:
B
99. The size of a drill is
stamped on the:
A. Point
B. Margin
C. Shank
D.Flute
Answer:
C
100.
A.Operator must wear goggles
B.The surface to be babbitted
must be free of moisture
C.The surface to be babbitted
must be clean
D. All of the above
Answer: D
MACHINE ELEMENTS 12
Past ME Board Question
1. Which of the following safety
precaution should be followed
when renewing a flange gasket?
A. Drain the line thoroughly
B.Tie down isolation valves
C.Isolate the section to be
worked on
D. All of this
Answer:
D
2. In installing a new flange
gasket, which of the following
must be done first?
A. Flange faces are painted
B. Flange faces are absolutely
clean
C. Isolating valves are open
D. Old gasket is in placeAnswer: B
3. Which of the following is
correct about standard wire
gage?
A. #10 is larger than #5
B. #1 is smaller than #2
C. #25 is smaller than #20
D. #30 is larger than #25
Answer: C
4. Which of the following tools
would be most useful when
taking leads on bearings?
A. Dividers
B. Micrometer
C. Outside calipers
D. Center gage
Answer:
B
5. What is the wrench
size for a 3/4" nut?
A. 1-1/4”
B. ¾”
C. 1-1/2”
D.10/24”
Answer:
A
6. Which of the following
would cost hot bearings?
A. Improper oil
B. Improper alignment
C. Dirt in oil
D. All of the above
Answer: D
7. What is the
approximate melting
point of Babbitt?
A. 1000oF
B. 750oF
C. 6500F
D.5000F
Answer: C
8. Which of the following is
correct in pouring of Babbitt?
A. It can be done at several
pouring
B. Must be poured all at one
time
C. It can be done at intervals
D. Must be done at coolAnswer:
place
B
9. Which of the following
groups of pipe sizes is correct?
A. ¼, ½. ¾, 7/8, 1
B. ¼, 3/8, 1/2, 3.4, 1
C. ¼, 3/8, ½, 5/8, ¾, 1
D. ¼, ½, 5/8, 3,4, 1
Answer:
B
10. Which of the following
where pipe wrench (Stillson)
was designed to be used?
A. Hexagon objects
B. Square objects
C. Round objects
D. Flat objects
Answer:
C
11. In which of the
following where is pipe is
measured?
A. Inside diameter
B. Thickness of wall
C. Outside diameter
D. Wire gage
Answer:
A
12. In which of the
following where tubing is
measured by:
A. Inside diameter
B. Thickness of wall
C. Outside diameter
D. Wire gage
Answer:
C
13. How do you call the tool
used to cut threads on pipe?
A. Pipe tool
B. Pipe vise
C. Pipe stock
D. Pipe cutter
Answer:
C
14. How do you call the pipe
fitting which has two openings
and provides a turn of 90
degrees?
A. An elbow
B. A coupling
C. A tee
D. A union
Answer:
A
15. Which of the following where
plug cock offers?
A. More resistance to flow than a globe
valve
B. The same resistance to flow as a
globe valve
C. Less resistance to flow than a globe
valve
D.The same resistance to flow as a
Answer:
angel valve
C
16. What is the most common
flux to be used when soldering
brass, copper or tin?
A. Tallow
B. Borax
C. Rosin
D. Sal ammoniac
Answer:
C
17. In one turn of the screw
in a micrometer, it moves
the spindle in what amount?
A. 0.25”
B. 0.025”
C. 0.205”
D. 0.110”
Answer:
B
18. What is the process
used to retard corrosion on
iron pope?
A. Soldering
B. Tempering
C. Annealing
D. Galvanizing
Answer: D
19. On XX heavy pipe the extra
metal is added to which of the
following?
A.Outside
B.Inside
C.Half on the inside, half on the
outside
D. Three quarters on the outside,
one quarter on the insideAnswer:
B
20. Which is very necessary when
installing packing in a packing box?
A. Leave one old turn at the bottom of
the packing box
B. Remove one turn and install one
new turn of packing
C. Leave sufficient end clearance on
each turn to allow for expansion
D.Place end cuts directly in the with
Answer:
each other
C
21. A square foot of steel plate
1/8” thick weight 5 lbs. the
weight of the steel plate 10 feet
and 4 feet wide would be how
much?
A. 200 lbs.
B.20 lbs.
C.2,000 lbs.
D. 20,000 lbs.
Answer:
A
22. Cast iron weighs 640 lbs/
ft3. How much is the weight of
a cast iron block 14” x 12” x 18”?
A. 1,200 lbs.
B. 1,120 lbs.
C. 1000 lbs.
D. 1088 lbs.
Answer:
B
23. A tank 28 “in diameter is 14”
is filled with water. The total
pressure on the bottom of the
tank is:
A. 3742 lbs.
B. 2573 lbs.
C. 4257 lbs.
D. 3000 lbs.
Answer:
A
24. A double-bottom tank is
18’ wide, 24’ long and 4’ deep.
It is filled with fresh water. The
total capacity in tons is:
A. 50
B. 55
C. 48
D. 45
Answer:
C
25. Sheet metal of #18 gage
is heavier than:
A. 12 gage
B. 22 gage
C. 14 gage
D. 16 gage
Answer:
B
26. What is the use of
shims?
A. Separate fresh-and-saltwater lines
B. Replace fuses
C. Adjust cylinder liners
D. Adjust bearing clearance
Answer: D
27. How much do you call the
process used to retard corrosion
(rust) on iron pipe and filting?
A. Tinning
B. Galvanizing
C. Soldering
D. Sulphurizing
Answer: B
28. pipe fitting the term “offset”
refers to what?
A.A cut-off running at right angles
to the original piping
B.Two pipes running parallel to
each other
C.A bend in the pipe
D. Two sizes of pipe in the same
Answer:
run
C
29. In machine shop, if the lips of the
drill are of different lengths then
which of the following will likely
happen?
A. The drill will not cut
B. The hole will be larger than the drill
C. The hole will be smaller than the
drill
D.None of these will happen
Answer:
A
30. Which of the following
statement(s) is correct for the “braze
point”?
A. Stronger than a soldered joint
B. Weaker than a soldered joint
C. The same strength as a soldered
joint
D.Three times stronger as a soldered
joint
Answer:
A
31. Brazing require which
of the following?
A. Hard solder
B. More heat
C. Soft solder
D. A and B
Answer: D
32. What is/are the primary
reason(s) why leads is used in
solder?
A. It has a high melting
B. It is cheap
C. It has a low melting
D. B and C
Answer: D
33. What is the name of
taper shank use on drills?
A. Miller
B. Starrett
C. Morse
D. Stanley
Answer:
C
34. What is the effect of the
melting point of solder is very
high?
A. Weaker the solder joint
B. Stronger the solder joint
C. Softer the solder joint
D. Harder the solder joint
Answer:
B
35. Which of the following will likely
happen if the angel on a drill is less
than 59 degree?
A. The drill will make larger hole
B. The drill will make a smaller hole
C. The hole will take longer to drill and
more power is required to drive the
drill
D.The drill will not center properly
Answer:
C
36. What is/are the reasons(s) of
soda being added to water and
used for cooling instead of plain
water?
A.It reduces the amount of heat
generated
B.It improves the finish
C.It over comes rusting
Answer: D
D. All of these
37. What will likely happen
if the drill’s speed is too
high?
A. Cut faster
B. Cut slower
C. Lose its temper
D. Not cut
Answer: C
38. The lip clearance of the
drill should approximately
how many degrees?
A. 200-250
B. 120-150
C. 50-100
D. 150-200
Answer:
B
39. If the cutting edges of a
drill are cut at different angels:
A. The drill will not cut
B. The hole will be larger than
the drill
C. The hole will smaller than
the drill
D. None of the above Answer:
B
40. What is the correct
cutting angel of a drill for
ordinary work?
A. 450
B. 590
C. 500
D. 600
Answer:
B
41. A piece of stock 8” long and
4” diameter on one end and 1”
diameter on the other end. The
taper per foot is:
A. 4”
B. 4-1/4”
C. 4-1/2”
Answer: C
D. 4-1/6”
42. A piece of stock 8” long is 3”
diameter at one end and 1-1/2”
diameter at one end. The taper
per inch is:
A. ½”
B. 3/16”
C. ¾”
D. 5/16
Answer:
B
43. A piece of stock 6” long is 2”
diameter at one end and is cut
with a taper of ½” to the foot. The
diameter of the smaller end will be:
A.1-1/2”
B.1-1/4”
C.1-3/4”
D. 2”
Answer:
C
44. If a piston ring is to made 1/64”
larger in diameter per inch
diameter of the cylinder which it is
to fit, the required diameter for a
piston ring to fit an 8” cylinder will
be:
A.8-1/4”
B.8-3/16
C.8-1/8
Answer:
D. 8-5/32”
C
45. What is the reason why drill
“squeal’s” when cutting?
A. Drill being ground
improperly
B. Insufficient lubrication
C. Drill being too hot
D. Any of the above
Answer: D
46. In what operation where “center
drilling” is to be found?
A. Drilling a center in an odd-shaped
piece metal
B. Drilling and countersinking with
one tool
C. Centering with one tool and drilling
with another
D.Drilling a center in a piece of stock
Answer:
in a drill press
B
47. Which of the following will defines
“pitch” in threads?
A. The distance of the full length of the
thread
B. The distance from a point on one tread
to a corresponding point on the next
thread measured parallel to the axis
C. The distance from the top of one thread
to the bottom of the next thread
D. Distance from the bottom of a head on
a bolt to the first thread
Answer:
B
48. A tool bit for cutting an
American National thread
should be ground with what
angel?
A. 450
B. 600
C. 900
D. 300
Answer:
B
49. An approximate safe rule for cutting
new pistons for steam pumps is to allow:
A. 0.002” between piston and cylinder for
each inch diameter of piston
B. 0.001” between piston and cylinder to
each inch diameter piston
C. 0.010” between piston and cylinder to
each inch diameter piston
D. 0.0001” between piston and cylinder to
each inch diameter piston
Answer:
B
50. An approximate safe rule for cutting
new piston rings for steams pumps is to
make the ring:
A. 1/322” larger in diameter per inch
diameter of cylinder
B. 1/16” larger in diameter than that of
the cylinder
C. 1/16” larger in diameter per inch
diameter of cylinder
D. 0.005” larger in diameter per inch
diameter of cylinder
Answer:
C
51. What is the approximate gap
clearance for new piston rings for
steam pumps?
A. 0.003” for each inch diameter of
cylinder
B. 0.001” for each inch diameter of
cylinder
C. 0.010” for each inch diameter of
cylinder
D. 0.050” for each inch diameter of
cylinder
Answer:
A
52. The familiar “3/8-16” in
machine shop means what?
A.6 pieces, 3/8” long
B.Gear with 16 teeth and a 3/8”
arbor hole
C.3/8” square, 16” lone
D. 3/8” diameter, 16 threads per
inch
Answer: D
53. The work should be
held ______, when using a
drill press.
A. The hand
B. A vise or clamp
C. A gloved hand
D. Pliers
Answer:
B
54. What is (are) the reason(s) why
tapered shanks are used on large drill
presses?
A. The drill can be centered more easily
B. The drill can be easily forced out of
the sleeve with a drift
C. The shank will not turn when
cutting
D.The shank can be reground when
worm
Answer:
B
55. Which of the following
is not common drill shank?
A. Straight
B. Fluted
C. Taper
D. Bit
Answer:
B
56. What is the usual
cutting angle on a drill of
drilling mild steel?
A. 390
B. 590
C. 490
D. 690
Answer:
B
57. When installing a new
grinding wheel, always use:
A.Blotting paper gaskets on each
side of the wheel
B.Copper gaskets on each side of
the wheel
C.Only the steel washers provided
with the machine
D. None of the above Answer:
A
58. What is the other term for
the operation of “truing” a
grinding wheel?
A. Centering
B. Sizing
C. Dressing
D. Rounding
Answer:
C
59. What tool is used to
check external pipe threads?
A. Plug gage
B. Pitch gage
C. Thread gage
D. Ring gage
Answer:
D
60. What tool is used to
check internal pipe threads?
A. Plug gage
B. Pitch gage
C. Thread gage
D. Ring gage
Answer:
A
61. Which of the following
is used to cut gears?
A. Gear cutter
B. Gear center
C. Gear hob
D. Gear threader
Answer:
C
62. If you use dry grinding wheel
for sharpening tool bits, dip the
end of the bit in water frequently
to prevent:
A.Burning your fingers
B.Annealing the cutting edge of
the bit
C.Hardening the tip
Answer:
D. The tip from crystallizing
B
63. A piece of tool steel held
against an emery wheel will
give off:
A. White sparks with stars on
the ends
B. Yellow sparks
C. No sparks
D. Green sparks
Answer:
A
64. Grinding wheels have arranged of
soft to hard abrasive materials
depending on the use. Most
manufacturers letter their wheels
from A to Z. Which of the following
mark represent the hardest?
A. E
B. Z
C. A
Answer:
D.E1
B
65. What is the main difference between
a planet and a shaper?
A. The planet has an offset table and the
shaper has a horizontal table
B. The shaper has a rotting table and the
planner has a horizontal table
C. The table if a planner has a
reciprocating, motion past the table of the
shaper is stationary and the tool head has
a reciprocating motion
D. One is larger than the otherAnswer:
C
66. One of the factors involved
in the choice of a grinding wheel
is:
A. The kind of material to be
ground
B.The amount of stock to be
removed
C.All kind finish required
D. All of the above
Answer: D
67. The “tang” of a file is
the part that:
A. Does the cutting
B. Has no teeth
C. Fits into the handle
D. Is opposite the handle
Answer:
C
68. In general, files are
divided into two classes
called:
A. Single-cut and double-cut
B. Rough and smooth
C. Fine and coarse
D. Heel and sizes
Answer:
A
69. The length of a file is
measured from:
A. End to end
B. Point to end
C. Point to heel
D. Heel to end
Answer:
C
70. Which of the following
where “pillar” files are used?
A. Filling slots
B. Filling against a shoulder
C. Filling keyways
D. Any of the above
Answer: D
71. Which of the following will
usually happen to the blade of
flexible hacksaw applied by too
much pressure?
A. Snap easily
B. Buckle or run out of line
C. Cut too fast
D. Cut on a slant
Answer:
B
72. Which of the following best
defines soldering?
A. It is holding two metals together by
heating
B. It is joining two metals by a third
soft metal that is applied in a molten
state
C. It is molding two different kinds of
metals together by heating
D.It is joining two metals together by
heating
Answer:
B
73. What is the use of flux in
soldering?
A. Keep the solder from running of the
metal
B. Keep the metal from getting too hot
C. Keep the tip of the soldering iron
clean
D.Remove and prevent oxidation of
the metals
Answer: D
74. A surface should be
prepared for soldering by:
A. Filling the surfaces
B. Acid-cleaning the
surfaces
C. Scraping the surfaces
D. Any of the aboveAnswer: D
75. What is (are) the hard
tool(s) used for cutting
threads on round stock?
A. Stock and die
B. Stock
C. Die wrench
D. Stock cutter
Answer:
A
76. A tapered piece of stock is 2”
long, 1-1/8” diameter at one
end and ¾” diameter at the
other end. The taper per foot is:
A. 2”
B. 2-1/4”
C. 2-1/2”
D. 2-1/16”
Answer:
B
77. Which of the following best defies
sweating?
A. Soldering two different kinds of
metals together
B. Separating two pieces of metal that
have been soldering together
C. Tinning two surface, applying, flux
between them, holding the two
together and heating
Answer:
D.None of the above
C
78. If muriatic acid is used as a flux,
the soldered area must be cleaned
thoroughly afterwards to prevent:
A.Anyone touching it from getting
burned
B.Remaining acid from evaporating
and the solder disintegrating
C.The acid from evaporating and
the solder disintegrating
D. None of the above
Answer:
B
79. Solder will not unite
with a metal surface that
has:
A. Grease on it
B. Oxidation on it
C. Dirt on it
D. Any of the above Answer: D
80. soldered paste flux is most
popular but if you did not have
any, you could use:
A. Hydrochloric acid
B. Nitric acid
C. Sulphuric acid
D. Any of the above
Answer:
A
81. Hard solder is made of
which of the following?
A. Copper and zinc
B. Tin and copper
C. Tin and zinc
D. Tin and lead
Answer:
A
82. Which of the following
is the flux usually used for
hand solder?
A. Rosin
B. Barium
C. Borax
D. Alum
Answer:
C
83. In which of the following
where straight muriatic acid is
often used as a flux?
A. Galvanized iron
B. Sheet steel
C. Cast iron
D. Any of the above
Answer: D
84. For aluminum, special
solders are being used and will
usually require which of the
following?
A. More heat
B. The same heat as copper wire
C. Less heat
D. The same heat as sheet
metal
Answer:
A
85. A copper is annealed by
heating to a cherry red color
and _____.
A. Dousing in cold water
B. Dousing in oil
C. Cooling slowly in air
D. Dousing in hot water
Answer:
C
86. Soft solder is made of
which of the following?
A. Copper and zinc
B. Tin and copper
C. Tin and lead
D. Tin and zinc
Answer:
C
87. A piece of mild steel
held against an emery wheel
will give of _____.
A. Brightly shiny sparks
B. No sparks
C. Light straw-colored sparks
D. Green sparks
Answer:
C
88. A gear wheel making 156 RPM
has 56 teeth. It drives another gear
at 91 RPM. The number of teeth
on the second is:
A.65
B.50
C.90
D. 96
Answer: D
89. Tool steel can be hardened by which
of the following?
A. Heating red hot and plunging into water
B. Heating red hot and cooling in a blast of
dry air
C. Heating red hot and plunging into
linseed or cottonseed oil
D. Any of the above, depending on type
and use
Answer: D
90. At what temperature
where soft solder
approximately melts?
A. 2500
B. 4500
C. 3500
D. 5500
Answer:
C
91. What material where a
scriber is made from?
A. Carbon steel
B. Tool steel
C. Cold-rolled steel
D. Hot-rolled steel
Answer:
B
92. What should be done first
before applying layout blue on a
piece of metal?
A. Roughened
B. Clean
C. Hot
D. Cold
Answer:
B
93. How many flutes does a
drill bit have?
A. 4 flutes
B. 2 flutes
C. 3 flutes
D. No flutes
Answer:
B
94. Where is the correction
position of the tool bit when
facing off a piece of material in
the lathe chuck?
A. Above center
B. Below center
C. At the center
D. Off center
Answer:
C
95. Standard vise has
_____ jaws?
A. Soft
B. Hard
C. Semi hard
D.Semisoft
Answer:
B
96. In machine, which of the
following could be the reason if
tool bit burns?
A. Speed is too slow
B. Material is too hard
C. Speed is too fast
D. Material cannot be cut
Answer:
C
97. For which of the following
where the lathe compound is
used?
A. Angel cutting
B. Facing
C. Grooving
D. Any of the above
Answer: D
98. When the dial on the crossfeed is turned 0.010”, how
much is removed from the
diameter of the stock being cut?
A. 0.010”
B. 0.005”
C. 0.020”
D. 0.015”
Answer:
A
99. Which of the following
describes a flexible back
hacksaw blade?
A. Only the teeth hardened
B. A movable back
C. Flexible ends
D. Only at back hardened
Answer:
A
100. The flexible type hacksaw
blade is best suited for which of
the following materials?
A. Channel iron
B.Aluminum
C. Tubing
D. Any of the above
Answer: D
MACHINE ELEMENTS 13
Past ME Board Question
1. Hacksaw blades are made
of what materials?
A. Tool steel
B. Tungsten alloy steel
C. High-speed steel
D. Any of the above
Answer:
D
2. A hacksaw blade with 24 TPI
is best suitable for cutting
which of the following
materials?
A. Tubing
B. Brass and copper
C. Sheet metal over 18 gage
D. Any of the above Answer:
D
3. Which of the following is a
“must” for all hard hacksaw blades?
A.It has a hard back and flexible
teeth
B.It has a flexible back and hard
teeth
C.It has the entire blade hardened
D. It will only fit a solid frame
Answer: C
hack saw
4. how many position
can a hacksaw blade be
placed in a frame?
A. Two positions
B.One
C. Four positions
D. Three positions
Answer:
C
5. Files are divided into two
general classes. How are these
classified?
A. Rough and smooth
B. Single-cut and double-cut
C. Large and small
D. Flat shapes and round shapes
Answer:
B
6. The term “set” of a saw best defines
what?
A. To set properly in the frame
B. Alternate teeth are turned slightly to
left and right to make cutting slot slightly
wider than the thickness of the blade
C. The teeth have been case-hardened for
better cutting
D. The teeth are set evenly apart
Answer:
B
7. All hard hacksaw blade is
best suited for work on which
of the following?
A. Brass
B. Cast iron
C. Tool steel
D. Any of the above
Answer:
D
8. Which of the following is the
best instruments for measuring
thousandths of an inch?
A. Caliper
B. Micrometer
C. Tachometer
D. Pyrometer
Answer:
B
9. A hacksaw blade with 34
teeth per inch should be used
for cutting which of the
following materials?
A. Brass
B. Heavy stock
C. Iron cast
D. Thin wall tubing Answer: D
10. How is the hacksaw blade
should be placed in the frame?
A. The teeth pointing forward
B. The teeth pointing backward
C. One end looser than the
other end
D. The teeth facing any
direction
Answer:
A
11. Which of the following is the usual
procedure when cutting a long thin
piece of metal?
A. Turn the blade upside down in the
frame
B. Turn the blade a right angles to the
frame
C. Use a blade with fewer teeth per
inch
D.Set the blade in the frame with the
teeth facing toward you
Answer:
B
12. A hacksaw blade with 18
teeth per inch is best suited for
cutting what material(s)?
A. Solid stock
B. Aluminum
C. Cast iron
D. Any of the above
Answer:
D
13. What is the use of coolant in
the power hacksaw when cutting
materials?
A.Absorb the heat of friction
B.Prevent the blade from
overheating
C.Prevent the blade from loosing
its temper
Answer: D
D. All of the above
14. What is used for finishing a
piece of work to size with a file?
A. Double-cut fine0tooth file
B. Mill file
C. Single-cut fine-tooth file
D. Crossing file
Answer:
C
15. The process of finishing
off a piece of metal with a
real smooth finish.
A. Draw-filling
B. Mill-filling
C. Side-filling
D. Flat-filling
Answer:
A
16. How do you call a small
piece of metal clogged
between the teeth on a file?
A. Clogs
B. Pins
C. Flats
D. Bumps
Answer:
B
17. Which of the following
describes as the “safe edge” of
the file?
A. The end opposite the handle
B. The edge with no teeth
C. The one with the handle
D. None of the above
Answer:
B
18. The best procedure when
filling a piece of metal in a lathe
is to take:
A. Short even strokes
B. Long fast strokes
C. Long slow strokes
D. Short fast strokes
Answer:
C
19. Which of the following
information is necessary
when ordering a file?
A. Size(length)
B. Type if teeth
C. Shape
D. All of the above Answer: D
20. Which of the following is
the best file to be used when
finishing sharp corners or slots
and grooves?
A. Mill file
B. Knife file
C. Square
D. Jeweler’s file
Answer:
B
21. How is “elevensixteenths” of an inch
expressed in decimal?
A. 0.6785
B. 0.6875
C. 0.7685
D. 0.6578
Answer:
B
22. What is the approximate
distance of the marking on a
micrometer barrel?
A. 0.025” apart
B. 0.0025” apart
C. 0.250” apart
D. 2.50” apart
Answer:
A
23. Which of the following is the
effect if the lathe is put into back
gear?
A.Go backwards of the same speed
B.Faster
C.Slower
D. At s slower speed backwards
Answer:
C
24. The work should be held
with _____ when using a
drill press.
A. The hand
B. A vise or clamp
C. A pair of pilers
D. Gloves on
Answer:
B
25. What is normally used
in drilling a hole in a piece
of work held in a lathe
chuck?
A. Compound rest
B. Tailstock and drill stock
C. Cross-feed
D. Headstock
Answer:
B
26. Copper is annealed by
heating to a cherry red color
and:
A. Dousing in cold water
B. Dousing in oil
C. Cooling slowly in air
D. Dousing in hot water
Answer:
C
27. What is the main purpose of
“annealing” a metal?
A.To make the metal harder
B.To make the metal softer
C.To make the metal harder
medium-hard
D. To make the metal harder shiny
Answer: B
28. The purpose of
“tempering” is to make a
metal what?
A. Harder
B. Less brittle
C. Softer
D. More brittle
Answer:
B
29. What is the minimum
diameter of apiece of round
stock necessary to make a
square key ¾” on a side?
A. 1.5”
B. 1,0”
C. 1.06”
D. 0.75”
Answer:
C
30. A scriber is made
from what materials?
A. Carbon steel
B. Tool steel
C. Cold-rolled steel
D.Hot-rolled steel Answer:
B
31. Before applying layout
blue on a piece of metal, it
must be:
A. Roughened
B. Cleaned
C. Heated
D. Cold
Answer:
B
32. A drill bit has how
many flutes?
A. 4 flutes
B. 2flutes
C. 3flutes
D.No flutes
Answer:
B
33. The alignment of coupling faces
can be checked by which process?
A.Using an inside micrometer
B.Inserting thermocouple
C.Inserting a feeler gage between
the coupling faces at various points
around the circumference
D. Rotating and measuring to
nearest permanent fitting
Answer:
C
34. A piece of cast iron
held against an emery
wheel will give off what?
A. Dull yellow sparks
B. Red sparks
C. Bright shiny sparks
D. No sparks
Answer:
A
35. When cutting material in a
lathe, the softer the material
being cut, the tool bit should
have:
A. More top rake
B. Double top rake
C. Less top rake
D. Any of the above Answer:
C
36. After grinding a tool bit,
the cutting edge should be:
A. Case-hardened
B. Stoned with an oilstone
C. Rubbed with emery cloth
D. Rubbed with crocus cloth
Answer:
B
37. When turning a piece of
round metal in a lathe, the
front clearance should be
smaller to:
A. Large-diameter cutting
B. Cutting angles
C. Smaller-diameter cutting
D. None of the above Answer:
C
39. When cutting material in
lathe, the harder the material
being cut, the tool bit should
have:
A. More side rake
B. More top rake
C. Less side rake
Answer: C
D. No side rake
39. What is the primary
purpose of knurling?
A. Smooth material
B. Roughen material
C. Polish material
D. Sharpen material
Answer:
B
40. What do you call the
process of removing the sharp
edges from apiece of stock?
A. Knurling
B. Planning
C. Chamfering
D. Turning
Answer:
C
41. At what speed that carbon steel
drill should be operated?
A. Speed greater than that when using
a high speed drill
B. Speed less than that when using a
high-speed drill
C. The same speed as that when using
a high-speed drill
D.None of the above
Answer: B
42. A specific method of zinc
galvanizing in which parts are
tumbled in zinc dust at high
temperatures.
A.Sheradizing
B.Super finishing
C.Polishing
D. Picking
Answer:
A
43. Abrasion of parts against
wheels or belts coated with
polishing compounds.
A. Sheradizing
B. Super finishing
C. Polishing
D. Picking
Answer:
C
44. A super fine grinding
operation used to expose non
fragmented, crystalline base
metal.
A. Sheradizing
B. Super finishing
C. Polishing
D. Picking
Answer:
B
45. A process in which metal is
dipped in dilute acid solution to
remove dirt grease and oxides.
A. Sheradizing
B. Super finishing
C. Polishing
D. picking
Answer: D
46. A hot-dip or
electroplate application of
tin to steel.
A. Tin-plating
B. Metal spraying
C. Organic finishes
D. Lapping
Answer:
A
47. A fine grinding
operation used to obtain
exact fit and dimensional
accuracy.
A. Tin-plating
B. Metal spraying
C. Organic finishes
D. Lapping
Answer: D
48. The covering of surfaces
with an organic film of paint,
enamel or lacquer.
A. Tin-plating
B. Metal spraying
C. Organic finishes
D. Lapping
Answer:
C
49. The spraying of molten
metal onto a product. Methods
include metalizing, metal
powder spraying and plasma
flame spraying.
A. Tin-plating
B.Metal spraying
C.Organic finishes
D. Lapping
Answer:
B
50. Application of a thin
phosphate coating on steel
to improve corrosion
resistance.
A. Parkerizing
B. honing
C. hard surfacing
D. galvanizing
Answer:
A
51. This process is known
as bonderizing when used as
a primer for paints.
A. Parkerizing
B. Honing
C. Hard surfacing
D. Galvanizing
Answer:
A
52. A grinding operation
using stones moving in a
reciprocating pattern.
A. Parkerizing
B. Honing
C. Hard surfacing
D. Galvanizing
Answer:
B
53. The creation (by spraying,
plating, fusion welding, or
heat treatment) of a hard
metal surface in softer product.
A. Parkerizing
B. Honing
C. Hard surfacing
D. Galvanizing
Answer:
C
54. A zinc coating applied to low
carbon steel to improve corrosion
resistance. The coating can be applied
in a hot dip bath, by electroplating or
by dry tumbling (sheradizing).
A. Parkerizing
B. Honing
C. Hard surfacing
D.Galvanizing
Answer: D
55. The electro-deposition of a coating
onto the work piece. Electrical current
is used to drive ions in solution to the
part. The work piece is the cathode in
the electrical circuit.
A. Electroplating
B. Calorizing
C. Burnishing
D.Buffing
Answer:
A
56. The diffusing of aluminum into
a steel surface, producing an
aluminum oxides that protects the
steel from high-temperature
corrosion.
A.Electroplating
B.Calorizing
C.Burnishing
Answer:
D. Buffing
B
57. How do you call the process of
fine grinding or peening operation
designed to leave a characteristic
pattern on the surface of the work
piece?
A.Electroplating
B.Calorizing
C.Burnishing
Answer:
D. Buffing
C
58. A fine finishing operation,
similar to polishing, using a
very fine polishing compound.
A. Electroplating
B. Calorizing
C. Burnishing
D. Buffing
Answer: D
59. Rotating parts in a barrel
filled with an abrasive or non
abrasive medium. Widely used to
remove burrs, flash, scale, and
oxides.
A.Abrasive cleaning
B.Calorizing
C.Barrel finishing
Answer: C
D. Anodizing
60. An electroplating-acid bath
oxidation process for aluminum
and magnesium. The work piece
is the anode in the electrical
circuit.
A.Abrasive cleaning
B.Tumbling
C.Barrel finishing
Answer: D
D. Anodizing
61. Shooting sand (i.e. sand
blasting), steel grit, or steel shot
against work piece to remove
casting sand, scale, and oxidation.
A.Abrasive cleaning
B.Tumbling
C.Barrel finishing
D. Anodizing
Answer:
A
62. What is the other
term of barrel finishing?
A. Abrasive cleaning
B. Tumbling
C. Barrel finishing
D.Anodizing
Answer:
B
63. Brittle materials produce
discrete fragments, known
as:
A. Chip breaker grooves
B.
Discontinuous chips
C.
Non-segmented chips
D. Type-two chips Answer:
B
64. Ductile materials from
long, helix-coiled string
chips known as:
A. Continuous chips
B. Discontinuous chips
C. Segmented chips
D. Type-one chips Answer:
A
65. Often ground in the cutting
tool face to cause long chips to
break into shorter, more
manageable pieces.
A. Chip beaker grooves
B. Discontinuous chips
C. Non-segmented chips
D. Type-two chips
Answer:
A
66. What is the typical
chip thickness ratio?
A. 0.50
B. 0.75
C. 0.25
D.1.00
Answer:
A
67. The angle at which the
tool meets the work piece is
characterized by:
A. True rake angle
B. Clearance angle
C. Relief angle
D. Wedge angle
Answer:
A
68. Which of the following is
the sum of the rake,
clearance, and wedges
angles?
A. 900
B. 1800
C. 450
D. 750
Answer:
A
69. What is the relative velocity
difference between the tool and
the work piece?
A. Cutting speed
B. Chip velocity
C. Shear velocity
D. Rake velocity
Answer:
A
70. How do you call the
velocity of the chip relative
to the tool face?
A. Cutting speed
B. Chip velocity
C. Shear velocity
D. Rake velocity
Answer:
B
71. How do you call the
velocity of the chip relative
to the work piece?
A. Cutting speed
B. Chip velocity
C. Shear velocity
D. Rake velocity
Answer:
C
72. Which of the following is
the primary parameter affecting
the cutting energy requirement?
A. Compressive stress
B. Shear stress
C. Torsional stress
D. Bending stress
Answer: D
73. The energy expended per
unit volume removed is known
as:
A. Specific cutting energy
B. Metal removal rate
C. Cutting horsepower
D. Absolute cutting energy
Answer:
A
74. A plain carbon steel with
approximately 0.9 1t0 1.3%
carbon, which has been
hardened and tempered.
A. Carbon tool steel
B. High speed steel
C. Low speed steel
D. Medium speed steel Answer:
A
75. Contains tungsten or
chromium and retains its
hardness up to approximately
600 C.
A. Carbon tool steel
B. High speed steel
C. Low speed steel
D. Medium speed steel Answer:
B
76. Cast nonferrous tools
are brittle but can be used
up to approximately:
A. 1000 C
B. 925 C
C. 1500 C
D. 750 C
Answer:
B
77. Which of the following is
produced through powder
metallurgy from nonferrous
metals?
A. Sintered carbides
B. Ceramic tool
C. Diamonds
D. Cast nonferrous
Answer:
A
78. Ceramic tool operate
at what temperature?
A. Below 2000 F
B. Below 2200 F
C. Above 2000 F
D.Above 2200 F Answer:
A
79. Which of the following is
manufactured from aluminum oxide
have the same expected life as carbide
tools can operate at speeds from two
to three times higher? They operate
below 1100C.
A. Sintered carbides
B. Ceramic tools
C. Diamonds
Answer:
D.Cast nonferrous
B
80. Which of the following are
used in specific case, usually in
finishing operations.
A. Sintered carbides
B. Ceramic tools
C. Diamonds
D. Cast nonferrous
Answer:
C
81. Used as a finishing
operation since very fine and
dimensionally accurate surface
can be produced.
A. Grinding
B. Snagging
C. Honing
D. Lapping
Answer:
A
82. Describes very rough
grinding, such as that performed
in foundries to removed gates,
fins and risers from castings.
A. Grinding
B.Snagging
C.Honing
D. Lapping
Answer:
B
83. Grinding in which very
little material, 0.001 to
0.005 in. is removed.
A. Grinding
B. Snagging
C. Honing
D. Lapping
Answer:
C
84. Which of the
following is not a
measuring devise?
A. Orsat analyser
B. Thermometer
C. Micrometer caliper
D.Divider
Answer: D
85. A plain carbon steel with
approximately 0.9 to 1.3%
carbon which has been
hardened and tempered.
A. Carbon tool steel
B. Cast nonferrous
C. High-speed steel
D. Diamond
Answer:
A
86. Carbon tool steel can be
given a good edge, but is
restricted to used below:
A. 400 to 600 F
B. 300 to 400 F
C. 700 to 800 F
D. 800 to 1000 F
Answer:
A
87. Which of the following
contains tungsten or chromium and
retains its hardness up to
approximately 1100 F,
approximately known as a red
hardness:
A.Ceramic tools
B.Diamonds
C.High speed steel
D. Carbon tool steel
Answer:
C
88. Cast nonferrous tools
are brittle but can be used
up to approximately:
A. 1700 F
B. 2200 F
C. 2000 F
D. 600 F
Answer:
A
89. They are produced through
powder metallurgy from
nonferrous metals.
A. Diamonds
B. Cast nonferrous
C. Ceramic tools
D. Sintered carbides
Answer: D
90. Sintered carbides
operate cutting speeds how
many times as fast as HSS
tools:
A. 2 to 5
B. Thrice
C. 5 to 7
D. Twice
Answer:
A
91. Which of the following is
manufactured from aluminum oxide
have the same expected like as carbide
tools but can operate at speeds from
two to three times higher?
A. Ceramic tools
B. High speed steel
C. Diamonds
D.Carbon tool steel
Answer:
A
92. Soluble in the presence of
high temperature iron used in
specific cases, usually in
finishing operations.
A. Ceramic tools
B. Diamonds
C. High speed steel
D. Aluminum
Answer:
B
93. . Percent of the heat
developed in cutting is due to
friction between the tool and
work piece is:
A. Approximately 50%
B. Approximately 10%
C. Approximately 25 %
D. Approximately 75 %
Answer:
C
94. Which of the following is
used to reduce friction,
removed heat, remove chips
and protect against corrosion.
A. Water vapor
B. Carbon
C. Air
Answer: D
D. Cutting fluid
95. Which of the following
is a good heat removed, but
a promote rust?
A. Air kerosene
B. Kerosene
C. Carbon dioxide
D. Water
Answer: D
96. Addition of _____ to water
produce an efficient,
inexpensive cutting fluid that
does not promote rusting:
A. Sal soda
B. Kerosene lubricant
C. Straight cutting oils
D. Air
Answer:
A
97. It reduce friction and do not
cause rust but are less efficient
of heat removal than water:
A. Sal soda
B. Kerosene lubricants
C. Straight cutting oils
D. Air
Answer:
C
98. Taylor’s equation relates
cutting speed v and tool like T for
particular combination of tool
and work piece, VTn= constant.
This equation is also known as:
A.Flank water
B.Nose failure
C.Crater water
Answer: D
D. Tool life
99. After any cutting or
standard grinding operation,
the surface of a work piece will
consist of:
A. Smear metal
B. Ultra finishing
C. Super finishing
D. Center less grinding Answer:
A
100. A method that does not
require clamping, chucking,
or holding round work
pieces.
A. Centerless grinding
B. Laser machining
C. Chemical milling
D. Ultrafinishing
Answer:
A
MACHINE ELEMENTS 14
Past ME Board Question
1. Which of the following uses
high-energy electrical discharges
to shape electrically conducting
work piece?
A. electrochemical machining
B.electrochemical grinding
C.electrical discharge machining
D. ultrasonic grinding
Answer: C
2. For common brass tool,
wear ratios for the tool and
workpiece vary between:
A. 4:1
B. 20:1
C. 1-:1
D. 8:1
Answer: B
3. For expensive tool materials,
wear ratios for the tool and
workpiece vary between:
A. 4:1
B. 20:1
C. 10:1
D. 8:1
Answer:
A
4.It removes heat by electrolysis
in high current deplating
operation.
A. Electrochemical machining
B. Electronic erosion
C. Electrospark machining
D. Electrical discharge
machining
Answer:
A
5. What is the other name
of electrolytic grinding?
A. Laser grinding
B. Electrochemical grinding
C. Ultrasonic grinding
D. Chemical milling
Answer:
B
6. It is typical used in the
manufacture of printed circuit
boards, is the selective removal
of material not protected by a
mask.
A. Chemical milling
B.Laser machining
C.Ultrasonic machining
D. Electronic erosion
Answer:
A
7. It can be used to shape hard
brittle materials such as glass,
ceramic crystals, and gems stones,
as well as tool steels and other
metals.
A.chemical milling
B.laser machining
C.ultrasonic machining
Answer: C
D. electronic erosion
8. It is used to cut or burn small
holes in the workpiece with
high dimensional accuracy.
A. Electrochemical machining
B. Laser machining
C. Chemical milling
D. Electronic erosion
Answer:
B
9. A general term used to
denote the blanking, bending
and forming and shearing of
thin-gage metals.
A. Presswork
B. Transfer die
C. Strip die
D. Brake
Answer:
A
10. Used with dies and
punches to form the
workpiece.
A. Station
B. Transfer die
C. Strip die
D. Presses
Answer: D
11. With _____ the
workpiece advances through
a sequence of operations:
A. Presswork
B. Brakes
C. Tonnage
D. Progressive dies Answer: D
12. Cut pieces from flat
plates, strips and coil stocks.
A. Shearing
B. Bend allowance
C. Forming dies
D. Spring back
Answer: C
13. It produces usable
pieces, leaving the source
piece behind as scrap.
A. Punching
B. Drawing
C. Blanking
D. Coining
Answer:
C
14. The operation of removing
scrap blanks from the
workpiece, leaving the source
piece as the final product.
A. Punching
B. Drawing
C. Clanking
D. Coining
Answer:
A
15. A cold forming process
that converts a flat blank
into hallow vessel.
A. Embossing
B. Drawing
C. Swaging
D. Punching
Answer:
B
16. It is used in the product of
coins, is a severe operation
requiring high tonnage, due to the
fact that the metal flow is
completely confined within the die
cavity.
A.Coining
B.Embossing
C.Swaging
D. Blanking
Answer:
A
17. Forms shallow raised letters
or other designs in relief on the
surface of sheet metal blanks.
A. Coining
B. Embossing
C. Swaging
D. Blanking
Answer:
B
18. Reduce the workpiece area
by cold floe=wing the metal
into a die cavity by a high
compressive force or impact.
A. Coining
B. Embossing
C. Swaging
D. Blanking
Answer:
C
19. The repeated
hammering of a workpiece
to obtain the desired shape:
A. Spring back
B. Blanking
C. Punching
D. Forging
Answer: D
20. Relies on closed
impression dies to produce
the desired shape
A. Hammer forging
B. Open die forging
C. Smith forging
D. Drop forging
Answer: D
21. What is the other name
give to gravity drop hammer?
A. Board hammer
B. Press forging
C. Powered hammer
D. Impactor forging
Answer:
A
22. The forging blows are
repeated at the rate of several
times a minute for:
A. Gravity drop hammers or
board hammers
B. Press forging
C. Powered hammer
D. Impactor forging Answer:
A
23. The forging blows are
repeated at the rate of more
than 300 times a minute for:
A. Gravity drop hammer or
board hammers
B. Press forging
C. Powered hammer
D. Impactor forging Answer:
C
24. The workpiece is held in
position while the dies are
hammered horizontally into it
form both sides.
A.Gravity drop hammers or board
hammer
B.Press forging
C.Powered forging
Answer: D
D. Impactor forging
25. Involves holding and
applying pressure to round
heated blanks
A. Upset forming
B. Flash
C. Pickling
D. Parting linr
Answer:
A
26. With _____, the part is
shaped by slow squeezing
reaction, rather than rapid
impacts.
A. Drop forging
B. Impactor forging
C. Press forging
D. Upset forging
Answer:
C
27. Following forging, the part
will have a thin projection of
excess metal known as _____ at
the parting line.
A. Pickling
B. Flash
C. Trimmer dies
Answer: B
D. Upset
28. The flashed is trimmed
off by _____ in a subsequent
operation.
A. Pickling
B. Upset
C. Trimmer dies
D. Forging
Answer:
C
29. With _____, a mold is
produced by packing sand
around a pattern:
A. Sand molding
B. Gravity molding
C. Die casting
D. Plastic molding Answer:
A
30. To facilitate the removal of
the pattern, all surfaces parallel to
the direction of withdrawal are
slightly tapered. This taper is called:
A.Gate
B.Riser
C.Sprue
D. Draft
Answer: D
31. In a gating system, the metal
is poured into a sprue hole and
enters a vertical passage known
as:
A. Gates
B. Downgate
C. Draft
D. Risers
Answer:
B
32. Serves as a accumulators
to feed molten metal into
the cavity during initial
shrinkage
A. Gates
B. Downgate
C. Draft
D. Risers
Answer:
B
33. An entrance to the cavity
maybe constricted to control
the rate of fill and such
constrictions are known as:
A. Gates
B. Downgates
C. Sprue
D. Risers
Answer:
A
34. Molten metal is poured into
a metal or graphite mold where
pressure is not used to fill the
mold.
A. Sand molding
B. Plastic molding
C. Gravity molding
D. Non-gravity moldingAnswer:
C
35. Suitable for creating parts
of zinc, aluminum, copper,
magnesium, and lead/tin alloys:
A. Die casting
B. Investment casting
C. Centrifugal casting
D. Continuous casting
Answer:
A
36. More than how many
percent of all die casting
uses zinc alloys?
A. 50%
B. 25%
C. 75%
D. 80%
Answer:
C
37. Molten metal is forced
under pressure into a
permanent metallic mold
known as:
A. Die
B. Mold
C. Alloy
Answer:
D. Torpedo
A
38. The cast iron flywheels
are commonly designed with
a factor of safety of _____.
A. 14 to 15
B. 8 to 9
C. 10 to 13
D. 6 to 12
Answer:
C
39. A pair of equal and
opposite (not collinear)
forces that tend a rotation of
a body.
A. Couple
B. Equilibrium
C. Centroids
D. Vector
Answer:
A
40. This is the ratio of the
pitch diameter in inches to
be the number of teeth.
A. Pitch circle
B. Module
C. English module
D. Pitch diameter Answer:
C
41. When the motion is
diminished/decreasing
instead of increasing is called:
A. Deceleration
B. Retarded motion
C. Uniform negative
impulse
D. All of these
Answer: C
42. Which of the
following is a unit of a
energy?
A. Ft.-lb.
B. BTU/hr.
C. Hp
D.Watt
Answer:
A
43. When high strength and
durability are a requirements
for choosing gear materials it is
preferable to use _____ material.
A. Hardened bronze
B. Phenolic laminated
C. Steel
Answer: C
D. White iron
44. Which of the forces whose
line of actions are parallel but
not necessarily equal in
magnitude?
A. Couple
B. Resultant
C. Non collinear
Answer: D
D. Non concurrent
45. The product of the mass
and the velocity of the center of
gravity of the body is called:
A. Linear momentum
B. Linear impulse
C. Angular impulse
D. Angular momentum
Answer:
A
46. Two parallel shaft connected by
pure rolling turn in the same direction
and a speed ratio of 2.75. what is the
distance of the two shaft if the smaller
cylinder is 22 cm. in diameter.
A. 16.6 cm
B. 25.25 cm
C. 30.25 cm
D.19.25 cm
Answer: D
47. The distance between
similar, equally spaced tooth
surfaces in a given direction and
a long given line:
A. Pitch circle
B. Pitch
C. Pitch plane
D. Pitch diameter
Answer:
B
48. It is simply defined as
a simple push and pull.
A. Power
B. Work
C. Inertia
D.Force
Answer: D
49. How do you call the
opposite directional forces
equal in magnitude and parallel.
A. Non coplanar
B. Couple
C. Centroid
D. Coplanar
Answer:
B
50. Which of the following
terms is applied to quantities
such as time, volume and
density?
A. Couple
B. Components
C. Resultant
Answer: D
D. Scalar
51. The used of hardened steel for
the mating metal gear appears to
give the best result and longer
operational life. The usual
hardness is the range of:
A.Over 600 BHN
B.Below 350 BHN
C.300 to 400 BHN
Answer:
D. Over 400 BHN
A
52. It is the product of the
resultant of all forces acting
on a body and the time.
A. Linear momentum
B. Angular momentum
C. Linear impulse
D. All of these
Answer:
C
53. The separate forces
which can be so combined
are called:
A. Concurrent forces
B. Couple
C. Non concurrent forces
D. Component forcesAnswer: D
54. Continuous stretching
under load eve if the stress
is less than the yield point.
A. Plasticity
B. Creep
C. Elasticity
D. Ductility
Answer:
B
55. The most known lubricants
being utilized in whatever
category of load and speed are
oil, air, grease and dry lubricants
like:
A. Bronze
B.Silicon
C.Lead
D. Graphite
Answer: D
56. A coupling that allows axial
flexibility/movement in the operation.
Made of alternate boiling of steel,
leather, fabric and/or plastic material
in the two flanges.
A. Flexible disk coupling
B. Flexible Oldham coupling
C. Flexible toroidal spring coupling
D.Elastic-material bonding coupling
Answer:
A
57. It consist of two cranks, a
stationary piece called the line
of centers and the connecting
rods is:
A. Five-bar linkage
B. Three-crank linkage
C. Four-crank braces
D. Four-bar linkage Answer: D
58. Used to change rotary
motion to reciprocating motion:
A. Rack gears
B. Helical gears
C. Hypoid gears
D. Herringbone gears
Answer:
A
59. The effective face width
of a helical gear divided by
gear axial pitch:
A. Approach ratio
B. Arc of recess
C. Arc of action
D. Face overlap
Answer:
A
60. Pitch diameter less the
diameter of the roller chain
is equal to:
A. Top land
B. Addendum
C. Bottom diameter
D. Face overlap
Answer:
C
61. Generally applied on
speed reducer due to larger
speed ratio:
A. Bevel gears
B. Worm gears
C. Helical gears
D. Hypoid gears
Answer:
B
62. If shaft size is specified asdiameter 2” max. and 1.99” min.
in diameter then the 0.01” could
be defined as:
A.Allowance
B.Variance
C.Fit
D. Tolerance
Answer: D
63. A material plane was subjected to
a load. When the load was removed
the strain disappeared. From the
structural change which of the
following can be considered about this
material?
A. It has high modules of elasticity
B. It is plastic
C. It does not follow Hooke’s law
Answer: D
D.It is elastic
64. For an evenly distributed and
uniform wear on each meshing
gear tooth, the ideal design
practice is to consider a:
A.Wear resistance alloy addition to
tooth gears
B.Heat treatment of the gears
C.Hardening of each tooth
Answer: D
D. Hunting tooth addition
65. Helix angle in the range
of _____ degree is
recommended for wide face
helical gears.
A. Less than 15
B. 20 to 35
C. Less than 20
D. 20 to 22
Answer:
A
66. Difference between maximum
materials limits of mating parts. Or
it is a minimum clearance or
maximum interference between
parts:
A.Tolerance
B.Variance
C.Fits
Answer: D
D. Allowance
67. The changes in shape or
geometry of the body due to
action of a force on it is called
deformation or:
A. Shear stresses
B. Compressive stress
C. Stresses
Answer: D
D. Strains
68. The reciprocal of a diameter
pitch or the ratio of the pitch
diameter to the no. of teeth.
A. Lead
B. Involute
C. Module
D. Clearance
Answer:
C
69. One of three materials
is not structural steel?
A. Low carbon steel
B. Stainless steel
C. Tool and die steel
D. Medium carbon steel
Answer:
C
70. The elastic body whose
primary function is to
deflect under load.
A. Clutch
B. Brake
C. Stopper
D. Spring
Answer: D
71. Flat leather belting not
recommended for used in a
speed in excess of ____fpm.
A. 3600
B. 6000
C. 4800
D. All of these
Answer:
B
72. The angle included between
the sides of the thread
measured in an axial plane is a
screw thread.
A. Angle of thread
B. Helix angle thread
C. Angle between thread or 40
D. Half angle thread orAnswer:
20
A
73. When an air entrainment
again is put into a concrete mix.
A. The water/cement ratio must
be reduced
B. The strength will decrease
C. Minimal effect
D. The strength will suffer up to
50%
Answer:
B
74. The ratio of moment of inertia on
a cross-section of a beam to this section
modulus is:
A. A measure of distance
B. Equal to the radius of gyration and
compression
C. Multiplied by the bending moment
of the inertia to determine the yield
stress
D.Equal to the area of the cross-section
and tension
Answer:
A
75. The ratio of the moment of
inertia of the cross section of a
beam to the section modulus is
____?
A.Equal to the radius of gyration
B.Equal to the area of the cross
section
C.Multiplied by the bending
moment to determine the stress
D. A measure of distance
Answer: D
76. Poisson’s ratio is ratio of?
A. Elastic limit to yield strength
B. Lateral deformation to the
longitudinal deformation
C. Shear strains to unit strain
D. Elastic limit to shear strength
Answer:
B
77. Alloy that improves
strength to steel at high
temperature application:
A. Aluminum
B. Silicon
C. Manganese
D. Chromium
Answer: D
78. The differential of the shear
equation is the:
A. Deflection of the beam
B. Tensile strength of beam
C. Comprehensive of strength
of the beam
D. Load on the beam
Answer: D
79. Length of the contact between
two mating parts in a screw and
nut threads measured axially is
termed _____.
A.Length of engagement
B.Arc of contacts
C.Axis of contact
D. Depth of engagement
Answer:
A
80. The sum of their
addendums and dedendums
is:
A. Whole depth
B. Width of space
C. Full depth
D. Working depth Answer:
A
81. It is recommended not to have
a direct drive between driven and
drive sprockets if the ratio of their
teeth exceeds _____. Use 2 or more
steps combination.
A.10 times
B.5 times
C.8 times
Answer:
D. 6 times
C
82. Stresses that are
independent of loads is called
_____.
A. Working stresses
B. Simple stress
C. Residual stresses
D. Combined stress
Answer:
C
83. Ability to resist
deformation under stress.
A. Plasticity
B. Stiffness
C. Toughness
D.All of these
Answer:
B
84. The property of material
wherein the content is
continuously distributed
through its entire mass.
A. Plasticity
B. Homogeneity
C. Malleability
D. All of these
Answer:
B
85. Material having a high
electrical resistance and should
not be used as conductor or
electrical current.
A. Nickel
B. Silicon base alloys
C. Aluminum oxide
D. Iron oxide
Answer:
A
86. The best materials for
brake drums is:
A. Aluminum
B. Steel material
C. Cast iron
D. Wrought iron
Answer:
C
87. The property that
characterizes a material’s ability
to be drawn into a wire.
A. Tensile strength
B. Endurance limit
C. Ductility
D. Thermal conductivity
Answer:
C
88. The alloy materials used in
the production of metal
working tools:
A. Titanium, phosphorus
B. Vanadium, chromium,
molybdenum
C. Tungsten, silicon, hadfield
D. High carbon steel Answer: D
89. Which of the phases of
steel element has a face
centered cubic structure?
A. Pyrite
B. Cementite
C. Austenite
D. All of these
Answer:
C
90. The rigidity of polymer
can be increased by:
A. Furnace melting
B. Crystallization
C. Normalizing
D. Shot opening
Answer:
B
91. The difference between cast steel
and cast iron:
A. All of these
B. Cast steel has usually less than 1%
C. While cast iron has 2% or 3.6%
carbon range
D.Cast iron has lower strength more
brittle and has lower ductility than
cast steel
Answer: D
92. It is a general practice to use the
following allowable stresses 4000 psi
for main transmitting shaft and 8500
psi for small short shafts and counter
shaft. For lineshaft carrying pulley it is
____psi.
A. 7800
B. 6000
C. 7000
Answer:
D.6500
B
93. The properties of metal
to withstands loads without
breaking down is:
A. Elasticity
B. Plasticity
C. Strength
D. Strain
Answer:
C
94. Almost the soldering
materials are a combination of
the following alloys:
A. All of these
B. Tin and antimony
C. Lead and tin
D. Lead and antimony
Answer:
C
95. The most popular of all
soldering material in use has
composition of:
A. 45/55% tin and lead
B. All of these
C. 50/50% tin and lead
D. 60/40% tin and lead
Answer:
C
96. The relative strength of
a butt welding could be
safety assumed as _____%
efficiency.
A. 95
B. 90
C. 98
D. 92
Answer:
B
97. It is a work supporting device
which is bolted to the saddle of the
lathe machine. It travels with the
cutting tool it is the prevention of the
springing away of the work piece from
cutting tools.
A. Rubber-flex colts
B. Follower rest
C. Tool post
Answer:
D.Carriage stop
B
98. Which of the following raw
materials are used in the foundry
molding operation?
A. Silica sand, bentonite, flour/paste
water
B. Silica sand paste, graphite electrode
C. Silica sand and paste
D.Silica sand, linseed oil, flour
Answer:
A
99. Which of the following
is not a part of micrometer
caliper?
A. Thimble
B. Spindle
C. Head screw
D. Anvil
Answer:
C
100. To avoid brittleness of
weld or the residual stress in
the welding it is normally stress
relieve of:
A. Normalizing
B. Flame hardening
C. Tempering
D. Annealing
Answer:
C
MACHINE ELEMENTS 15
Past ME Board Question
1. Which of the following is the
following is the allowable
tensile strength of the steel
plates?
A. 396.41 N/m2
B. 379.31 N/m2
C. 296.12 N/m2
Answer:
D. 310.11 N/m2
A
2. Which of the following
standard SAE designation of
manganese steel?
A. 13xx
B. 11xx
C. 10xx
D. 8xx
Answer:
A
3. Compute the torque received by the
motor shaft running at 4250 rpm.
Transmitting 11 Hp, through a 10 in
diameter 200 involute gear. The shaft is
supported by ball bearings at both ends
and the gear is fixed at the middle of 8”
shaft length.
A. 163 in lb.
B. 132 in lb.
C. 167 in lb.
D. 138 in lb.
Answer:
A
4. The SAE 2340 shafting
contains how many percent
nickel?
A. 3.85 Ni
B. 3.25 to 3.75% Ni
C. 4% Ni
D. 3.84% Ni
Answer:
B
5. Which of the following
standard SAE designation for
chromium steel?
A. 92xx
B. 3xxx
C. 5xxx
D. 11xx
Answer:
C
6. In general, alloys with high
nickel content retain toughness
to quiet low temperatures up to
how many degrees Fahrenheit?
A. -380
B. -260
C. -400
Answer: D
D. -320
7. The length of the hub should not be
made lesser than the face width of the
gear. Hub lengths usually vary from
1.25D to 2D where D is the shaft
diameter. What should be the
reasonable diameter of steel hub?
A. 2D
B. 1.55D
C. 1.8D
Answer: C
D.1.20D
8. Torsional deflection is a
significant consideration in the
design of shaft and the limit
should be in the range of how
many degree/foot of length?
A.0.4 to1
B.0.08 to 1
C.0.1 to 1
Answer:
D. 0.6 to 1
B
9. If the pitch of a screw is
2/9 find the thread per inch.
A. 0.34
B. 5.4
C. 4.5
D. 17
Answer:
C
10. Steel spring material is
usually hardened from 400 to
500 BHN and the carbon content
is in the range of how many
percent?
A. 0.50 to 0.90%
B.0.45 to 0.48%
C.0.96 to 0.97%
D. All of these
Answer:
A
11. Shafts readily available in the
market are in many ways and wide
variety of material composition. It is
likely be cold drawn carbon steel in
size smaller than _____ inches
diameter.
A. 3.75
B. 5
C. 4
Answer:
D.51/2
A
12. Plain carbon steel
standard designation SAE
______.
A. 6xxx
B. 10xx
C. 13xx
D. 2xxx
Answer:
B
13. If the inertia is 90 lb.ft2 and the
speed of the driven shaft is to be
increased from 0 to 2500 rpm in 5
seconds, shaft material is of SAE 4140
with yield strength of 110000 lbs./in2,
find the clutch starting torque in in-lb
ft.
A. 159
B. 146
C. 128
D.191
Answer:
B
14. How many 5/16 inch holes can be
punch in one motion in a steel plate
made of SAE 1010 steel 7/16 inch
thick using a force of 55 tons. The
ultimate strength for shear is 50 ksi
and use 2 factor of safety.
A. 5.8
B. 5
C. 3.7
Answer:
D.6.5
B
15. Which of the following
cannot be used in drilling.
A. Reaming
B. Lapping
C. Spot facing
D. Broaching
Answer:
C
16. A kilowatt is equal to:
A. 8851.2 in-lb./sec.
B. 57 BTU/min
C. 1140 joule/sec.
D.44.200 ft.-lb./min.
Answer:
B
17. Molybdenumchromium-nickel steel
designation.
A. SAE48xx
B. SAE56xx
C. SAE43xx
D. SAE46xx
Answer:
C
18. Single forces which
produces the same effect upon
a mass replacing two or more
forces acting together is called:
A. Vector
B. Component of forces
C. Resultant
D. Resolution
Answer:
C
19. Permissible variation of
the manufactured/machined
dimension is called:
A. Intolerance fits
B. Allowance
C. Deviation
D. Tolerance
Answer: D
20. Peculiar strength of the
metal to resist being crushed:
A. Shear strength
B. Compressive strength
C. Ultimate strength
D. Elastic limit
Answer:
B
21. What pressure is required
for punching a hole 2” diameter
thru 1/4" steel plates?
A. 40 tons
B. 45 tons
C. 50 tons
D. 35 tons
Answer:
A
22. What is the working strength
of a 2” bolt which is screwed up
tightly in a packed joint when the
allowable working stress is 12,000
psi.
A.20.4 ksi
B.23.4 ksi
C.22.4 ksi
Answer:
D. 18 ksi
A
23. Determine the bursting steam
pressure of a steel shell with diameter
of 10 inches and made of 1/4 thick
steel plate. The joint efficiency is at
70% and the tensile strength is 60 ksi.
A. 4200 psi
B. 42.8 psi
C. 10.5 psi
D.8500 psi
Answer:
A
24. Commonly used by steel
melter as deoxidizer because of
its easy availability and cheap
price.
A. Silicon
B. Zinc
C. Aluminium
D. Manganese
Answer:
C
25. Curved formed by the path of a
point on a straight line as it rolls
along a convex base curve. The base
curve is usually a circle and
generally used as a profile of gear
tooth.
A.Axial plane
B.Arc or recess
C.Involute
D. Arc of action
Answer:
C
26. Resultant of two or more
component forces is called:
A. Composition of forces
B. Component
C. Resultant
D. Collinear of forces
Answer:
A
27. A material having a high
electrical resistance and should
not be used for conductor of
electric current.
A. Alloyed magnesium
B. Nickel
C. Silicon base alloy
Answer: B
D. Zinc
28. It improves red
hardness of steel.
A. Silicon
B. Cobalt
C. Lead
D.Manganese
Answer:
B
29. Designated pipe color
used in communication.
A. Silver gray
B. Bare
C. Aluminium gray
D.White
Answer: D
30. The design stress and factor of safety
are related in the following manner.
A. Design stress = ultimate stress / factor
of safety
B. Ultimate stress = factor of safety /
design stress plus concentration factor
C. Factor of safety = design stress /
ultimate stress
D. Design stress = factor of safety / times
stress concentration factor
Answer:
A
31. Not adaptable to
welding due to low tensile
strength and poor ductility
etc.
A. Copper parts
B. Aluminum parts
C. Cast iron material
D. Bronze parts
Answer:
B
32. Bearing surface that
completely surrounds the
journal is also called:
A. Offset bearing
B. Centrally loaded bearing
C. Full bearing
D. Babbit bearing
Answer:
C
33. The purpose of
lubrication is as mention
except.
A. To lighten the load
B. Prevent adhesion
C. Prevent corrosion/
oxidation
D. Cool the moving elements
Answer:
A
34. Tools usually used in
wood pattern making in
foundry shop.
A. Saws and chisels
B. Knives and drills
C. Band saw
D. Drill machine
Answer:
A
35. It is a plane perpendicular to
the axial plane and to the pitch
plane in gears the parallel and axes
and the plane of rotation coincides.
A.Tangent plane
B.Transverse
C.Straight plane
D. Reference plane
Answer:
B
36. A 36 tooth pinion with a
turning speed of 300rpm drives 120
tooth gear of 14 1/2 0 d involute
full depth pressure angle. What
would be the speed of the driven
gear?
A.1000rpm
B.90rpm
C.100rpm
D. 140rpm
Answer:
B
37. Several force which can
be combine is called:
A. Resultants
B. Components
C. Composition of forces
D. Collinear forces
Answer: B
38. The surface along the fillet
curves or between the fillets
radius of the two adjacent tooth
or a gear:
A. Bottom land
B. Fillet
C. Flank
D. Top land
Answer:
A
39. Ideal herringbone
gear helix is in the range
of:
A. Bottom land
B. Fillet
C. Flank
D.Top land
Answer:
A
40. Ideal herringbone
gear helix is in the range
of:
A. 30 to 45
B. 25 to 30
C. 35 to 50
D.15 to 20
Answer:
A
41. A three extension coil spring are
hooked in the series that support a
single weight of 100kgs. The first
spring is rated at 0.400kg/mm and the
other two lower spring is rated at .
64kgs/in. compute the total deflection.
A. 263mm
B. 156mm
C. 268mm
Answer:
D.None of these
D
42. The lack of backlash in a
spur gear design/operation
may result to:
A. Overloading
B. All of these
C. Jamming
D. Overheating
Answer:
B
43. The distance from a point
on a screw thread to a
corresponding point on the next
thread measure along the axis.
A. Flank
B. Crest
C. Lead
Answer: D
D. Pitch
44. As recommended the center
to center distance between
sprockets should not be less
than ____ times the bigger
sprockets.
A.2.216
B.1 ½
C.1 ¾
D. 2.59
Answer:
B
45. Machine shop instrument
for checking the flatness of
plane surfaces to 10ths of
thousandths of a centimetre.
A. Blade type micrometer
B. Planimeter
C. Dial calliper
D. Micrometer
Answer:
B
46. Molybdenum steel
standard designation SAE.
A. 88xx
B. 40xx
C. 48xx
D.46xx
Answer:
B
47. Also called eccentrically
loaded bearing is:
A. Full bearing
B. Partial bearing
C. Offset bearing
D. Fitted bearing
Answer:
C
48. In the selection of wire rope,
regular lay means wires and
strands are arranged in the
following manner.
A.Twisted in the same direction
B.Twisted in the opposite direction
C.Twisted in any direction
D. Twisted in along direction
Answer:
B
49. In involute teeth, the pressure
angle is often defined as the angle
between the line action and the
line of tangent to the pitch circle.
It is also term as:
A.Helix angle
B.Angle of obliquity
C.Angle of recess
Answer:
D. Arc of action
B
50. Instantaneous center
is also called:
A. Centro
B. Virtual center
C. Rotopole
D.All of these
Answer:
B
51. What is the stress to
strain ratio within the
elastic limit?
A. Elastic limit
B. Elasticity
C. Modulus of elasticity
D. Compressive ratioAnswer:
C
52. A material plane was subjected to
a load. When the load was removed
the strain disappeared. From the
structural change which of the
following can be considered about this
material.
A. It does not follow Hooke's law
B. It is elastic
C. It has high modules of elasticity
Answer:
D.It is plastic
B
53. Allowance added in the
casting pattern to
compensate for the
contraction of metal.
A. Tapering allowance
B. Finish allowance
C. Shrinkage allowance
D. Draft pattern.
Answer:
C
54. Ratio of the angle of
action to the pitch angle.
A. Contact ratio
B. Ratio of gearing
C. Approach ratio
D.Module
Answer:
A
55. General purpose grade of
steel used for broiler plate,
structural etc. usually with
carbon content of.
A. 0.20 to 0.30%C
B. 0.35 to 0.50%C
C. 0.15 to 0.25%C
D. All of these
Answer:
A
56. The angle made by the helix
of the thread (in a straight
thread) at the pitch diameter
with a plane perpendicular to
the axis called:
A. Angle of thread
B.Lead angle
C.Truncation
D. Lead
Answer:
B
57. The principle materials used
in the production of metal
working tools:
A. High carbon steel
B.Titanium, phosphorous
C.Tungsten, silicon, hadfieldMn
D. Vanadium, chromium,
molybdenum
Answer:
A
58. In the interest of design
simplification and good kinematic
compromise bevel gears adopted a
standard pressure angle ______
degrees.
A.200 involute stub
B.141/2 involute full depth
C.200
Answer:
D. 171/2
C
59. The property of material
that relates the lateral strain
to longitudinal strain.
A. Stress
B. Poisson ratio
C. Strain
D. Endurance limit Answer: B
60. It is generally recommended and
normal for a designer to add a hunting
tooth to evenly distribute the wear of
meshing teeth like a 53 teeth gears mesh
with 30 teeth pinion. Find the rotation of
pinion to mesh with same pair of teeth
again.
A. 120
B. 61
C. 81
D. 53
Answer: D
61. The shaft whose torque varies
from 2000 to 6000 in lbs has 11/2
in in diameter 60,000 psi yield
strength. Compute for the shaft
mean average stress.
A.6036 psi
B.5162 psi
C.6810 psi
Answer:
D. 5550 psi
A
62. The angle made by the helix
of the thread (in a straight
thread) at the pitch diameter
with a plane perpendicular to
the axis is called:
A. Lead angle
B.Lead
C.Truncation
D. Angle of thread
Answer:
A
63. The rule of thumb in
journal bearing design;
clearance ratio / clearance
should be.
A. 0.0090
B. 0.0010
C. 0.0042
D. 0.00120
Answer:
B
64. The moment of inertia of a
rectangular whose base is “b”
height “h” about its base is.
A. Bh3/4
B. Bh3/24
C. Bh3/12
D. Bh3/3
Answer: D
65. Cold rolled shafting is
not available in diameter
large than.
A. 6in
B. 6.5 in
C. 5 in
D. 5.5 in
Answer:
C
66. Height of tooth above pitch
circle or the radial distance
between pitch circle and top
land the tooth.
A. Top root
B. Land
C. Addendum
D. Hunting tooth
Answer:
C
67. The function of clutch in
the machine tool is?
A. Lowering of drive speed
B. To disconnect or connect at
will the drive
C. Alignment of drive shaft
D. To ensure that two shaft line
up at high speed
Answer:
B
68. A resulting force that
replace two or more forces
acting together.
A. Vector
B. Resultant
C. Couple
D. Equilibrium
Answer:
B
69. Stress relieving is also
_________ for the purpose of
reducing the internal stresses of
steel material/metal.
A. Normalizing
B. Annealing
C. Tempering
D. All of these
Answer:
C
70. Matensite (stainless steel)
contains 4 to 26 % Cr. And
maximum of ______ %
Nickel.
A. 2.5
B. 3.5
C. 3.25
D. 2.0
Answer:
A
71. Matensite (stainless steel)
contains 4 to 26 % Cr. And
maximum of ______% nickel.
A. 2.5
B. 3.5
C. 3.25
D. 2.0
Answer:
A
72. Compute a deflection of a 18 coils
helical soring having a load of 100kgs.
The modulus of elasticity in shear of
spring is 96.62 Gpa, OD of 9256 cm
and with diameter of 9525 mm. the
spring is square and ground ends.
A. 9mm
B. 112mm
C. 101mm
Answer:
D.14mm
C
73. A flanged bolt coupling has 10
steel 25.4mm diameter bolts evenly
tighten around a 415 around mm bolt
circle. Determine the torque capacity of
the connection if the allowable
shearing stress in the bolt is 50 MN/m2.
A. 59.95 KN-m
B. 46.15 KN-m
C. 52.6 KN-m
D.43.8 KN-m
Answer: C
74. material that can cut/
wear hardest substance
subjected to:
A. Carbide
B. Tungsten
C. Abrasive
D. Vanadium
Answer:
C
75. A ridge with uniform
section in the form in helix cut
around the circumference of a
cylinder and advancing along
the axis.
A. Thread root
B.Screw thread
C.Helix thread
D. Chamfers
Answer:
B
76. Cast iron flywheel are
commonly design with
factor of safety of:
A. 10 to 13
B. 10 to 14
C. 10 to 12
D. 8 to 13
Answer:
A
77. Class of material exhibiting
decrease electrical conductivity
with increasing temperature.
A. Aluminum
B. Metal
C. P-type semi-conductors
D. N-type semi-conductors
Answer:
B
78. The welding made along
the edges of two parallel
plates is called:
A. Groove joint
B. Edge joint
C. Fillet joint
D. Corner joint
Answer:
B
79. Not part and in fact
should not be used in the
steel melting process.
A. Coke
B. Zinc
C. Silicon
D. Alumminum
Answer:
A
80. Rule of thumb in calculating
the equipment foundation mass
should be_____ times the weight
of the machinery it is supposed to
support.
A.3-5
B.3-9
C.3-6
Answer:
D. 2-4
A
81. The strength of non-ferrous
alloy is at maximum at room
temperature while that of ferrous
metal has the maximum strength
at ______ 0F.
A.400
B.450
C.1200
Answer:
D. 350
A
82. The ratio of stress acting on
a elastic substance to the
decrease in volume per unit
volume.
A. Bulk modulus
B. Elastic limit
C. Modules of resilience
D. Modules of elasticityAnswer:
A
83. The normal helix angle in
helical gear is recommended in
the range of ______ degrees.
A. Less than 18
B. 15 to 25
C. 20 to 35
D. 20 to 30
Answer:
B
84. Type of bolt commonly
used in the construction that is
threaded in both ends.
A. Stud bolts
B. Hex bolts
C. Acne threaded bolts
D. Square threaded bolts
Answer:
A
85. It is rigid piece which serves
to transmit force from a piece
another piece or to cause/
control motion.
A. Follower
B. Cam motion
C. Crank
Answer: D
D. Link
86. A 20kgs. Cast iron piece rest on
a plain horizontal aluminum
surface. To move the object it needs
a force of 7 lbs. the density of Al is
0.098lb/in3 and iron is .260 lb/in3
A.0.172
B.1.601
C.0.186
D. 0.160
Answer: D
87. Which of the following is an
iron based alloy containing
9-16% chromium?
A. Mnhadfield steel
B. Stainless steel
C. Chrome-moly steel
D. High chrome steel
Answer:
B
88. Shafting up to 3 inches in
diameter is usually made from cold
rolled steel and the common
biggest diameter of cold rolled
steel is:
A.4inches
B.6.5inches
C. 7 inches
Answer: D
D. 5 inches
89. It is ideal for maximum
quietness in sprockets drive
operation to choose ____ or
more teeth.
A. 24
B. 27
C. 18
D. 21
Answer:
B
90. All associated with standard
material specification:
A.American iron and steel institute
B.Society of automotive engineers
C.Southeast Asia iron and steel
institute
D. American society for testing
materials
Answer:
C
91. For stable equipment foundation the
total combined engine driven equipment
and foundation center of gravity must be
kept below the foundations too that
usually about _____ times the usual total
combined weight of the machinery it is
supposed to support.
A. 3 to 4
B. 2 to 4
C. 3 to 7
D. 3 to 5
Answer: D
92. A cylinder tank with 10” inside
diameter contains oxygen gas at
2500 psi. calculate the required
wall thickness in (mm) under
stress of 28 000 psi.
A.11.34mm
B.12.44mm
C.10.24mm
Answer:
D. 10.54mm
A
93. The process of peening the joint
portion immediately after the welding
greatly improves the structures avoids
possible cracking, avoids possible
distortion etc. Peening can also ______
process at the same time.
A. Tempering
B. Normalizing
C. Martampering
Answer:
D.Annealing
A
94. What do you call the
distance between rivet center
nearest each other in adjacent
rows?
A. Pitch
B. Margin
C. Back pitch
Answer: D
D. Diagonal pitch
95. Which of the
following is a major alloy
I tool steel?
A. Cr
B. Cobalt
C. Fen
D.Mn
Answer:
A
96. Should two equal and opposite
collinear forces is added to the
forces already in equilibrium,
which of the following statement is
true?
A.Unbalanced moment is
maintained
B.Equilibrium is maintained
C.Equilibrium is disturbed
D. It creates an unbalanced
situation
Answer:
B
97. In pressure vessels, which of
the following resists internal
pressure through bending?
A.Shell-type element
B.Cam type element
C.Plate-type element
D. Spherical type element
Answer:
C
98. Which of the following
flanges is suitable for low and
moderate pressure?
A. Ring-flange
B. Lap joint flange
C. Tapered-hub flange
D. Welding neck type
Answer:
A
99. It is the process of prestressing or over-stressing of a
hollow cylindrical member
beyond the elastic range.
A. Pesstagge
B. Autofrettage
C. Stress relieving
D. Countersinking
Answer:
B
100. It is the phenomenon
occurring when two touching
surfaces have a high contact
pressure and when these surfaces
have minute relative motion.
A.Prestressing
B.Fretting
C.Friction
Answer:
D. Carving
B
MACHINE ELEMENTS 16
Past ME Board Question
1.For ordinary steel, the modulus
of elasticity usually falls between
____ million pounds.
A. 20 to 31
B.35 to 45
C.20 to 35
D. 25 to 30
Answer: A
2. The modulus of elasticity for
metals in compression is usually
taken as that in:
A. Tension
B. Bearing
C. Yield
D. Ultimate
Answer:
C
3. Which is the following is the
ratio of moment and stress.
A. Strain
B. Section Modulus
C. Contraction
D. Passions ratio
Answer:
B
4. What is the flexural stress when
of a symmetrically cross-section
beam when the vertical shear is
maximum.
A.Infinity
B.Zero
C.Maximum
D. Minimum
Answer:
B
5. The riveted joints as in ASME
Code has a design surface
compressive stress ____ higher
than the design tensile stress.
A.70%
B.60%
C.35%
D. 50%
Answer:
B
6. What is the ratio of the
minimum strength of joints to the
strength of solid joints in the
pressure vessel?
A.Efficiency
B.Relative Strength
C.Performance Factor
Answer:
D. Joint Efficiency
B
7. What is the usual factor of
safety for pressure vessel?
A. 4
B. 1.5
C. 3
D. 5
Answer:
D
8. It is the permissible variation
of the size.
A. Tolerance
B. Limits
C. Fits
D. None of these
Answer:
A
9. Considering that there is no fit,
what is the permissible liberal
tolerance in machining work?
A. ±0.010
B.±0.090
C.±0.020
D. ±0.050
Answer:
A
10. Which of the following is a
tolerance where the size of a part
may be larger only, or smaller only,
than the given dimension.
A.Unilateral
B.Lateral
C.Bilateral
D. None of these
Answer:
A
11. A tolerance where the size of a
part is premittted to be either
larger or smaller than the given
dimension.
A.Unilateral
B.Lateral
C.Bilateral
D. None of these
Answer:
C
12. Which of the following is
the basis for ASA fits?
A. Basic Number System
B. Basic Hole System
C. Basic Size System
D. Unit System
Answer:
B
13. When the hole is smaller than the
shaft, it will take force or pressure to
put the cold parts together. In such
case the allowance is negative. Which
of the following terms is appropriate
for such allowance?
A. Negative fits of metal
B. Interference of metal
C. Positive fits of the shaft
Answer:
D.Intangible fits
B
14. What is the direction of the
predominant surface pattern?
A. Smoothness
B. Waviness
C. Lay
D. Roughness
Answer:
C
15. It is the irregularities of
departures from the nominal
surface of greater spacing than
roughness?
A. Waviness
B. Roughness
C. Lay
D. Smoothness
Answer:
A
16. It is the surface finish of
micrometer in rms.
A. 1
B. 2
C. 3
D. 4
Answer:
A
17. Which of the following
gears has the simplest type of
teeth?
A. Helical gears
B. Spur gear
C. Bevel gear
D. Worm gear
Answer:
B
18. In gears, an imaginary circle
on which the lever arm is based
in:
A. Base circle
B. Pitch circle
C. Addendum circle
D. Clearance circle Answer:
A
19. It is the circle tangent to the
addendum of the meshing gears.
A. Clearance circle
B. Base circle
C. Addendum circle
D. Pitch circle
Answer:
A
20. The distance from a point
on one gear to the
corresponding point measured
along the base circle.
A. Normal pitch
B. Circular pitch
C. Axial pitch
D. Diametral pitch
Answer:
A
21. A line passing through the
pitch point that is tangent to
both circles of a gear is:
A. Pressure line
B. Perpendicular line
C. Tangent line
Answer:
D. Center line
A
22. Which of the following is
the contact ratio for a good gear
design?
A. 1.5 : 1
B. 1 : 1.3
C. 1 : 3
D. 1.2 : 2
Answer:
A
23. In a pressure vessel, which of
the following resist internal
pressure through tension?
A.Shell-type element
B.Cam-type element
C.Plate-type element
D. Spherical-type element
Answer:
A
24. It is the study of the body’s
motion independent of the
forces on the body.
A. Kinetics
B. Dynamics
C. Kinematics
D. Mechanics
Answer:
C
25. What is the reciprocal of the
velocity ratio?
A. Train valve
B. Ratio factor
C. Modular value
D. None of these
Answer:
A
26. It is a type of bolt finished
all over and has usually having
coarse threads.
A. Coupling bolt
B. Stud bolt
C. Machine bolt
D. Automobile bolt
Answer:
A
27. It is a type of bolt distinguished
by a short portion of the shank
underneath the head being square
or finned or ribbed.
A.Coupling bolt
B.Stud bolt
C.Machine bolt
D. Carriage bolt
Answer:
D
28. It is a type of bolt threaded
on both ends can be used where
a through bolt impossible.
A. Coupling bolt
B. Carriage bolt
C. Stud bolt
D. Machine bolt
Answer:
C
29. Which of the following is
not a type of bolt?
A. Stud bolt
B. Steel bolt
C. Machine bolt
D. Coupling bolt
Answer:
B
30. It is a locking device that is
used to maintain pressure
between threads of the bolt and
nut.
A. Gasket
B. Lock washer
C. Lock nuts
D. Fillers
Answer:
B
31. What is the large wood
screw used to fasten machinery
and equipment.
A. Lag screw
B. Loss screw
C. Wood screw
D. Cross screw
Answer:
A
32. What is the minimum
length of contact in a tapped
hole for cast iron?
A. 1.7D
B. 1.5D
C. 1.2D
D. 2.1D
Answer:
B
33. It is the ratio of the mean
diameter of coil cover the coil
diameter.
A. Wahl factor
B. Spring index
C. Coil ratio
D. Lead scale
Answer:
B
34. What is the overall length of
the spring when it is compressed
until all adjacent coils touched?
A. Free length
B.Solid length
C.Compressed length
D. Expansion length
Answer:
B
35. It is the length of a coil
spring under no load.
A. Compressed length
B. Free length
C. Solid height
D. None of these
Answer:
B
36. In general, the steel springs
are made of relatively of relative
high carbon steel usually:
A. 5%
B.Less than 0.5%
C.More than 0.5%
D. 7.5%
Answer:
C
37. It is a low cost spring
material, suitable where service
is not serve and dimensional
precisions not needed.
A. Helical spring wire
B. Stainless steel
C. Hard drawn wire spring
Answer:
D. Copper
C
38. What is the hard drawn
(80%reduction) spring wire
made of high carbon steel?
A. Oil tempered wire
B. Music wire
C. Tension wire
D. Chromium wire Answer:
B
39. Which of the following wires
with good quality and is used for
impact loading?
A.Hard drawn wire
B.Song wire
C.Helical spring wire
D. Chromium-silicon wire
Answer:
D
40. When heat-treated wire is
coiled cold, its should be stress
relieved for bending stress and
after cooling it is healed at some:
A. 400 F
B.600 F
C.700 C
D. 500 F
Answer:
D
41. Which of the following is
not a function of spring?
A. Absorbs energy
B. Source of potential energy
C. Measure weight
D. Measure thickness
Answer: D
42. Which of the following
is the type of spring made in
the form of dished washer?
A. Air spring
B. Believile spring
C. Volute spring
D. Motor spring
Answer:
B
43. What is the type of failure
due to unstabillity?
A. Column formula
B. Slenderness formulas
C. Moment formulas
D. Euler formulas
Answer:
A
44. What type of formula that is
best applied to a very slender
column?
A. Column formula
B. Slenderness formulas
C. Moment formulas
Answer:
D. Euler formula
A
45. If two principal stresses is
zero, the state of stress is:
A. Biaxial
B. Mono-axial
C. Uniaxial
D. Triaxial
Answer:
C
46. What do you call the system
that has finite values of
principal stresses?
A. Triaxial
B. Uniaxial
C. Monoaxial
D. Biaxial
Answer:
D
47. A screw that requires positive
torque to lower the load, or to
loosen the screw if it has been
turned tight against a resistance.
A.Self locking screw
B.Lock screw
C.Self screw
D. Power screw
Answer:
D
48. What is the rotating
member used in transmitting
power?
A. Shaft
B. Counter shaft
C. Axle
D. Washer
Answer:
A
49. For machinery shafts, the
permissible deflection is
approximately:
A. 0.02 in./ft
B. 0.03 in./ft
C. 0.01 in./ft
D. 0.05 in./ft
Answer:
A
50. For shaft, the shear due to
bending is a maximum at the
neutral plane where the normal
stress is:
A.Minimum
B.Constant
C.Maximum also
D. Zero
Answer:
D
51. The minimum value of
numerical combined shock and
fatigue factor to be applied in
every case to the computed
bending moment of the shaft is:
A.2.0
B.1.75
C.1.5
D. 1.3
Answer:
C
52. What is the other name
given to short shafts on
machines?
A. Spindles
B. Head shafts
C. Core shafts
D. All of these
Answer:
A
53. The other name given to a
line shafts is:
A. Counter shaft
B. Main shaft
C. Long shaft
D. Head shaft
Answer:
B
54. The speed at which the centere of
mass will be equal the deflecting forces
on the shaft; the shaft with its attached
bodies will then vibrate violently, since
the centrifugal force changes its
direction as the shaft turns in:
A. Nominal speed
B. Critical speed
C. Relative speed
D. Mean speed
Answer:
B
55. An old rule of thumb for
transmission shafting is that the
deflection should not exceed
_____of length between supports.
A.0.01 in. per foot
B.0.08 in. per foot
C.0.02 in. per foot
D. 0.05 in. per foot
Answer:
A
56. For transmission shafts the
allowable deflection is 1
degree in a length of _____
diameters.
A. 20
B. 25
C. 30
D. 40
Answer:
A
57. What is the limiting torsional
deflection for machinery shafts, if the
criteria of limiting torsional deflection
vary from 0.08® per foot of length.
A. 1®
B. 2.5®
C. 2®
D.3.5®
Answer:
A
58. Bevel gears of size 5 in. to 15
in. should not be lift or depress
more than ____, as gleason
statement.
A. 0.004
B. 0.003
C. 0.002
D. 0.001
Answer:
B
59. What type of key that
allows the hub to move along
the shaft but prevents the
rotation of the shaft?
A. Woodruff key
B. Feather key
C. Gibbs key
D. Square key
Answer:
B
60. What is the other name for
Kennedy key?
A. Tangential key
B. Woodruff key
C. Saddle key
D. Rolipin
Answer:
A
61. What type of fits used for
involute spline?
A. Close fit
B. Press fit
C. Sliding fit
D. All of these
Answer:
D
62. It is used for permanent fits
and similar to involute splines
except that the pressure angle is
14.5®.
A. Separation load
B. Spline shaft
C. Stub serrations
D. Involute serrationsAnswer:
D
63. It is used a coupling, or in
addition to another couplings
where, in case of overload, there is
danger of injury to machine or to
material in process.
A.Shear pin
B.Flange coupling
C.Involute serrations
D. King pin
Answer:
A
64. What is the maximum shaft
angle for a single Hooke's
coupling?
A. 10®
B. 17®
C. 15®
D. 20®
Answer:
C
65. What are the two principal
parts of a journal bearing?
A. Bearing and journal
B. Shaft and babbit
C. Clearance and fitted
D. Shaft and cylinder
Answer:
A
66. When the line of action of
the load, bisects the arc of partial
bearing, the bearing is said to be:
A. Eccentrically loaded
B.Fully loaded
C.Centrally loaded
D. Partially loaded
Answer:
C
67. What is the difference in
radii of the bearing and journal?
A. Even clearance
B. Clearance ratio
C. Odd clearance
D. Radial clearance
Answer:
D
68. When radii of both the
bearing and the journal are the
same, then the bearing is said to
be:
A. Fitted bearing
B.Clearance bearing
C.Full bearing
D. Ambiguous bearing
Answer:
A
69. What is the line that
passes through the centers of
the bearing and journals.
A. Line of action
B. Line of centers
C. Line of symmetry
D. Tangent line
Answer:
B
70. Which of the following is
considered advantageous for
bearing materials?
A. Conformability
B. Compatibility
C. Embeddability
D. All of these
Answer:
D
71. A conclusion repeatedly
verified by experiment is that the
smoother surface :
A.Has the greater load capacity of
the bearing
B.Has the lesser capacity of the
bearing
C.Has constant load
Answer:
D. None of these
A
72. Which of the following
consider the 200 series of
bearing?
A. Heavy
B. Medium
C. Light
D. All of these
Answer:
C
73. Which of the following
considers the 300 series of
bearing?
A. Medium
B. Heavy
C. Light
D. All of these
Answer:
A
74. A type of roller bearing in which
the balls are assembled by the
eccentric displacement of the inner
ring.
A. Shallow groove ball bearing
B. Filling-slot ball bearing
C. Self-aligning ball bearing
D.Deep-groove ball bearing
Answer:
A
75. Which of the following is
not a type of ball bearing?
A. Shallow groove ball bearing
B. Filling-slot ball bearing
C. Self-aligning ball bearing
D. Deep-groove ball bearing
Answer:
A
76. Which of the following is
the approximate density of the
leather belt?
A. 0.035 lb/in.³
B. 0.0135 lb/in.³
C. 0.025 lb/in.³
D. 0.0465 lb/in.³
Answer:
A
77. Which of the following is
the approximate density of a fat
rubber belt?
A. 0.055 lb/in.³
B. 0.0135 lb/in.³
C. 0.045 lb/in.³
D. 0.0465 lb/in.³
Answer:
C
78. A toothed wheel whose tooth
elements are straight and parallel
to the shaft axis or used to
transmit motion and power
between parallel shafts.
A.Helical gear
B.Spur gear
C.Worm gear
D. Bevel gear
Answer:
B
79. The breaking strength of
oak-tanned beltings varies from
3 to more than :
A. 5 ksi
B. 6 ksi
C. 7 ksi
D. 9 ksi
Answer:
B
80. Experience suggest that the
most economical designs are
obtained for a belt speed of:
A. 6000 to 7500 fpm
B. 3000 to 5000 fpm
C. 3500 to 4700 fpm
D. 5000 to 1000 fpm Answer:
A
81. The tension in the belt due
to centrifugal force increasing
rapidly above that:
A. 2500 fpm
B. 3000 fpm
C. 3500 fpm
D. 4000 fpm
Answer:
A
82. For leather belts,
recommended speed is:
A. 6000 to 7000 fpm
B. 5000 to 6000 fpm
C. 7000 to 8000 fpm
D. 4500 to 5600 fpm
Answer:
C
83. The recommended initial
tension of the belt is:
A. 75 lb/in of width
B. 73 lb/in of width
C. 71 lb/in of width
D. 80 lb/in of width
Answer:
C
84. Two shafts at right angles to
each other may be connected by
what arrangement?
A. Half turn
B. Quarter turn
C. ¾ turn
D. One turn
Answer:
B
85. The minimum number of
teeth on a smaller sprocket for
low speed is:
A. 12
B. 21
C. 17
D. 14
Answer:
A
86. The minimum number of
teeth on a smaller sprocket for
moderate speed is:
A. 17
B. 21
C. 12
D. 14
Answer:
A
87. The minimum number of
teeth on a smaller sprocket
for high speed is:
A. 21
B. 34
C. 12
D. 14
Answer:
A
88. The resultant of a pair of
equal forces but opposite in
direction is called:
A. Concurrent
B. Couple
C. Non-concurrent
D. Resultant
Answer:
B
89. The helical and herringbone gear
teeth cut after heat treatment should
have a hardness in the range of
210/300BHN. The pinion gear teeth
hardness on the other hand, ideally/
normally should be at _____ BHN.
A. 250/320
B. 350/320
C. 400
D. 340/350
Answer:
D
90. As a rule the center to center
distance between sprocket should not
be less than _____ times the diameter
of the bigger sprocket and not less
than 30 times the pitch nor more
than about 50 times to pitch.
A. 1.5
B. 2
C. 2.5
D. 3
Answer:
A
91. A single force, which
produces the same effect upon a
mass as two or several forces
acting together, is called:
A. Components
B. Composition of forces
C. Resolution of forces
Answer:
D. Resultant
D
92. All forces in the same plane
are called:
A. Coplanar
B. Couple
C. Parallel
D. Resultant
Answer:
A
93. Which of the following laws
which states that the force of
attraction between two bodies is
directly proportional to the product
of their masses and inversely
proportional to distance square
between their centers.
A. Hooke’s law
B. Law of gravitation
C. Law of motion
D. Newton’s law
Answer:
B
94. Any object thrown upward will
return to earth with the
magnitude of the terminal velocity
equal to.
A.50% of the initial velocity
B.80% of the initial velocity
C.About 90% of the initial velocity
D. The initial velocity Answer:
D
95. Flat belt that is too tight will
induces strain on the bearing and
belt _______.
A.Life will be shortened
B.Result to uneconomical
operation
C.Suffer/shatter
D. Will be sheared/cut Answer:
A
96. The resulting cross-sectional
area of the tensile test specimen
divided by the specimen
original area is called:
A. Charpy test
B. % elongation
C. Impact test
D. Izod test
Answer:
B
97. SAE 51XXX belongs to the
______ steel family.
A. Carbon
B. Chromium
C. Manganese
D. Nickel
Answer:
B
98. In itself, it is a lubricant and
usually one of the important
elements in casting non-ferrous
metals like bronze, for example.
A.Antimony
B.Babbitt
C.Lead
D. Zinc
Answer:
C
99. Gasket materials, which
should avoid hot liquid/steam
applications.
A. Asbestos fiber
B. Nylon fiber
C. Rubberized
D. Wool
Answer:
C
100. The same material
properties all over/ direction
and at any particular point
in a structural member is:
A. Heterogeneous
B. Homogenous
C. Isentropic
Answer:
D. Isotropic
D
MACHINE ELEMENTS 17
Past ME Board Question
1. For large speed ratio and large
sprocket utilized it is recommended
cast ______ material since the large
sprocket teeth are having fewer
engagements.
A.Alloyed steel
B. Heat treated steel
C. Iron
D. Malleable iron
Answer:
C
2. Roller bearing is utilized on
________ carrying capacity and
is better than ball bearing in
this condition.
A. Heavy load
B. High temperature load
C. Low load
Answer:
D. Revising load
A
3. To enhance mechanical properties,
fabrication characteristics or any
other attributes of steel, some
elements are added in melting is
specific ranges or minimum aside
from carbon and generally termed:
A. Alloy steel
B. AISI steel
C. Bessemer steel
D. SAE steel
Answer:
A
4. Materials having thermal
expansion of about 10 times higher
than those materials and has more
heat generated during machining is :
A.Aluminum
B. Asbestos
C. Plastic
D. pvC
Answer:
C
5. To hold to minimum the axial
direction of deflection/movement, a
separate thrust bearing or pre-loaded
bearing capable of absorbing
considerable load is required. The
type of bearing to use is a _______
bearing.
A. Deep grove ball
B. Double row angular contract
C. Tapered roller bearing
D. Wide type self-aligningAnswer:
B
6. Pulley made of ___ ordinarily
is 45 to 55% less in weight and
2.35 to 2.70% less slippage
compared with _____ pulley
A. Iron/steel
B. Steel/iron
C. Wood/iron
D. Wood/steel
Answer:
B
7. To avoid scoring in the bearing
surface and the shaft due to
contamination/absorption of the fine
dirt in the bearing during operation/
lubrication the bearing material to
apply should have good ________
properties.
A. Anti- scoring
B. Resistance conformability
C. Corrosion resistance
Answer:
D. Embeddability
D
8. What do impact test measure?
A. Compactness
B. Ductility
C. Plasticity
D. Toughness
Answer:
D
9. Corresponding piping color
for alkaline
A. Blue
B. Green
C. Red
D. Violet
Answer:
D
10. Type of gear that transmits
power at an angle.
A. Bevel
B. Helix
C. Herringbone
D. Spur
Answer:
A
11. Which of the following
gasket material is not used for
high temperature?
A. Asbestos
B. Plastic nylon
C. Rubberized
D. Wool
Answer:
C
12. A plane perpendicular to the
gear axis>
A. Normal plane
B. Pitch plane
C. Plane of rotation
D. Radiation of gyration
Answer:
C
13. Specification of
molybdenum alloy.
A. SAE 3XXX
B. SAE 4XXX
C. SAE 5XXX
D. SAE 6XXX
Answer:
B
14. A ______ chain is an
assembly of lines and joints.
A. Dynamic
B. Kinetic
C. Sprocket
D. Static
Answer:
C
15. The recommended means of
supporting the chuck during the
mounting procedure to the
lathe spindle is to use:
A. Crane
B. Jack
C. Overhead
D. Ratchet
Answer:
D
16. Too much _______ in a flat
belt operation tend to cause
excessive wear slippage and
may burn the belt.
A. Load
B. Lack
C. Usage
D. Tightness
Answer:
D
17. It is chromium steel tape in
AISI-SAE designation.
A. 10xx
B. 25xx
C. 50xx
D. 40xx
Answer:
C
18. Which of the following is
not recommended for use in a
driving speed exceeding 2000 ft.
/min?
A. Flat leather belt
B. Herringbone gear
C. Silent sprocket
D. V-belt
Answer:
A
19. It is a low cost bearing used
worldwide for automobile or low
horsepower motor applications. It
is made of thin coating of over flat
metal strip.
A.Babbitt
B.Cadmium brass
C.Lead
D. Thin
Answer:
A
20. The most common useful tools
to measure diameter in machine
shop operation but normally and
always used with steel scale for
measurement.
A.Caliper
B.Micrometer
C.Protractor
D. Vernier
Answer:
A
21. In impact force introduced
to cause the metal to flow in
shaped mold according to the
shape of dies made.
A. Hardness
B. Spinning
C. Swaging
D. Toughness
Answer:
C
22. Forces of equal in
magnitude but opposite in
direction are parallel called:
A. Acceleration
B. Coplanar
C. Couple
D. Non-coplanar
Answer:
C
23. Composition of force is at
the _____ of two or more forces.
A. Combination
B. Opposition
C. Resultant
D. Summary
Answer:
C
24. Circular pitch is measured
along the _______ in the
circular gear.
A. Circular
B. Line of action
C. Pitch center
D. Pitch diameter
Answer:
C
25. Stiffness is the material’s
ability to _______ deformation
under stress.
A. Non-planer
B. Planer
C. Resist
D. Stafer
Answer:
C
26. The pipe color code in steam
is:
A. Blue
B. Gray
C. Silver gray
D. White
Answer:
C
27. What method is used to
measure the yield point of some
brittle materials?
A.Offset ratio
B.Modulus of resilience
C.Modulus of measurement
D. Parallelogram method
Answer:
A
28. Wood pattern in the
foundry is normally constructed
out of:
A. Dried sap wood
B. Hard wood
C. Kiln dried wood
D. Scrap wood
Answer:
A
29. The progressive change
in position of _____ is
called motion
A. Component
B. Couple
C. Link
D. Mass
Answer:
D
30. Strain or ________ is a
change in geometry / shape of
the body due to action of a force
on it.
A. Bending stress
B.Deformation
C.Shear stress
D. Stress
Answer:
B
31. The effective face width of a
helical gear divided by the axial
pitch. This is sometimes called
face overlap.
A. Angle overlap
B. Axial overlap
C. Contact overlap
D. Helical overlap
Answer:
D
32. For mass production of
casting it is generally cheaper to
use : _____ pattern for longer life.
A. Aluminum
B.Brass
C.Metal
D. Wooden.
Answer:
C
33. It is plane between mating
teeth or the amount of which a
tooth space exceed the thickness
of an engaging tooth is called:
A. Backlash
B. Clearance
C. Pitting
D. Space
Answer:
A
34. The forces that can be
combined or called component
forces.
A. Different
B. Helical
C. Opposite
D. Parallel
Answer:
A
35. Plane of rotation is defined
as plane perpendicular to a
A. Gear axis
B. Gear ratio
C. Normal plane
D. Pitch diameter
Answer:
A
36. Cutting lubricant used in
drilling reaming, and tapping
for brass and bronze.
A. Dry
B. Soda water
C. Soluble oil
D. Turpentine
Answer:
A
37. Non- concurrent forces
when in action are.
A. Collinear
B. Couple
C. Parallel
D. Scalar
Answer:
C
38. The general accepted limit
of diamond wheel speed should
be in the range of ______ Fpm.
A. 1000/2000
B. 2500/3500
C. 3000/4000
D. 5000/6000
Answer:
D
39. Prepared tool bit will now
consist of face, nose and
A. Cutting tool
B. Shank
C. Sharp tool
D. Tool edge
Answer:
B
40. This is an alloy in bronze
casting that assists lubrication
and in itself a lubricant:
A. Lead
B. Manganese
C. Phosphorus
D. Tin
Answer:
A
41. For longer sprocket chain
life the speed range of
_______ fpm is recommended.
A. 1200-1400
B. 1500-1600
C. 1800-2000
D. 2000-2100
Answer:
A
42. All stainless steel type is SAE
designation except.
A. 92xx
B. 300xx
C. 304xx
D. 515xx
Answer:
D
43. It is white metal with good
oxidation and corrosion
resistance. This has also good
electrical magnetic properties.
A. Aluminum
B. Copper
C. Nickel
D. Titanium
Answer:
C
44. It is molybdenum steel-tape
in AISI-SAE designation.
A. 44xx
B. 45xx
C. 50xx
D. 51xx
Answer:
A
45. Cutting lubricants used in
drilling, reaming and tapping
for hand spots in cast iron.
A. Dry
B. Kerosene
C. Soda water
D. Turpentine
Answer:
A
46. In a _______ design, the lead
of a single thread is equal to the
pitch.
A. Bevel gear
B. Bolt
C. Helical gear
D. Hypoid gear
Answer:
B
47. A type of chisel used in
cuttings keyways, square corner
slots.
A. Cape
B. Diamond head
C. Flat
D. Round
Answer:
A
48. The maximum recommended
ideal number of teeth to used for
bigger sprocket is :
A. 120
B.127
C.132
D. 142
Answer:
A
49. The teeth on the outer ring
surface is called the external
gear:
A. Developed
B. Flank
C. Gear
D. Involute
Answer:
C
50. A bolt general application
that posses a stronger thread is
a type _____ screw.
A. BUN
B. UNC
C. UNEF
D. WOOD
Answer:
B
Answer:
B
52. Special bearing used with
high deflection.
A. Babitt
B. Ball
C. Roller
D. Self aligning
Answer:
D
53. For low load and less
expensive production.
A. Babbitt
B. Ball bearing
C. Roller bearing
D. Self aligning
Answer:
B
54. The lateral strain in axial
tension numbers can be
calculated by
A. Deformation
B. Hooke’s law
C. Poisson’s ratio
D. Willan’s line
Answer:
B
55. The most abundant being
used in automobiles worldwide
is coated with ____ on top of
the plate.
A. Babbitt
B. Lead
C. Manganese
D. Tin
Answer:
B
56. A liquid metal at room
temperature
A. Aluminum
B. Mercury
C. Zinc
D. Zirconium
Answer: B
57. Steel with SAE specification
13xx
A. Chromium
B. Manganese
C. Molybdenum
D. Nickel
Answer:
B
58. Property, which enables a
material to be drawn into a
wire
A. ductilitcity
B. elasticity
C. plasticity
D. utility
Answer:
A
59. Heating the metal to a
temperature above critical
temperature and from cooling slowly
usually done in the furnance to
reduce the hardness and improve the
machinability is a process called
A. annealing
B. normalizing
C. plasticity
D. utility
Answer:
B
60. The stress that cause the
material to shorten:
A. bearing
B. compressive
C. shear
D. tensile
Answer:
B
61. The most known lubricants
being utilized in whatever category
of load and speed are oil, air,
grease and dry lubricants are like
A.bronze
B.graphite
C.lead
D. silicon
Answer:
B
62. Commonly used in parallel
shaft transmission especially when
a smooth continuous action is
essential as in high speed drives up
to 12,000 fpm.
A.Bevel gear
B.Helical gear
C.Herringbone gear
D. Spur gear
Answer:
B
63. The reciprocal of a diameter
pitch or the ratio of the pitch
diameter to the number of teeth
A. Clearance
B. Involute
C. Lead
D. Module
Answer:
D
64. What tool will be used in
making wood pattern in the
foundry shop?
A. Band saw
B. Drill machine
C. Hammer
D. Saw and chisel
Answer:
D
65. Type of bolt commonly used
in the construction that is
threaded in both ends.
A. Acme threaded bolts
B. Hex bolt
C. Square threaded
Answer:
D. Stud bolt
D
66. Ability of a material to
absorb strain energy and will
return to its original state.
A. Creep
B. Fatigue strength
C. Hardness
D. Resilience
Answer:
D
67. The ratio of lateral strain to
longitudinal strain
A. Deformation
B. Modulus of elasticity
C. Poisson’s ratio
D. Willan’s line
Answer:
C
68. Basic size is the same as the
design size if there is no:
A. Allowance
B. Clearance
C. Limits
D. Tolerance
Answer:
A
69. Forces that meet at a
common point are called:
A. Co-linear
B. Concurrent
C. Coplanar
D. Couple
Answer:
B
70. A pair of equal and opposite
(not collinear) forces that tend
to cause a rotation of a body.
A. Centroids
B. Couple
C. Equilibrium
D. Vector
Answer:
B
71. Stress that resist being
pulled apart
A. Compressive
B. Shear
C. Tensile
D. Torsional
Answer:
C
72. Dynamic seals are also
known as:
A. Gasket
B. Packing
C. Seal
D. Shield
Answer:
A
73. Acceleration is proportional
to the force.
A. Hooke’s law
B. Law of gravitation
C. Law of motion
D. Newton’s law
Answer:
D
74. Which type of hardening
will work to some extent in all
metals?
A. Annealing
B. Austenizing
C. Martempering
D. Work hardening
Answer:
D
75. Sound travels fastest in:
A. Air at 00F and 1 atmosphere
B. Air at 700F and 1 atmosphere
C. Air at 700F and 0lbf/in2
D. Steel at 700F
Answer:
D
76. The yield strength of
common yellow brass (70%Cu,
30%Zn) can be increased by:
A. Annealing
B. Chill casting
C. Cold working
D. Heat treatment
Answer:
C
77. Forces not on the same
plane are called _________.
A. Component
B. Composition of forces
C. Non-coplanar
D. Resolution
Answer:
C
78. The distance between the
center of oscillation and the
point of suspension is called:
A. Fix axis
B. Center of gravity
C. Center of precussion
Answer:
D. Radius of oscillation
D
79. If the velocity is variable and
regularly/ constantly increasing
the rate of change is called:
A. Acceleration
B. Constant work
C. Moment
D. Motion
Answer:
A
80. The kinematics chain in which
one link is considered fixed for the
purpose of analysis but motion is
possible in other links.
A.Belting
B.Frame
C.Mechanism
D. Sprocket chain
Answer:
B
81. The _____ is one of the rigid
members/bodies joined together
to form kinematic chain.
A. Coplanar
B.Frame
C.Link
D. Machine
Answer:
C
82. The large speed ratio and large
sprocket utilized it is
recommended cast ___ material
since the large sprocket teeth are
having fewer engagement.
A.Alloyed steel
B.Heat treated steel
C.Iron
D. Malleable iron
Answer:
C
83. Roller bearing is utilized
on_______ carrying capacity
and is better than ball bearing
in thus condition.
A. Heavy load
B. High temperature load
C. Low load
Answer:
D. Revising load
A
84. To enhance mechanical
properties, fabrication characteristic
or any other attributes of steel, some
elements are added in melting in
specific ranges or minimum aside
from carbon generally termed _____.
A. Alloy steel
B. AISI steel
C. Bessemer steel
D. SAE steel
Answer:
A
85. Materials having thermal
expansion of about 10 times higher
than those of metals and has more
heat generated during machining is:
A.Aluminum
B. Asbestos
C. Plastic
D. PVC
Answer:
C
86. Hold to minimum, the axial
direction of deflection/ movement, a
separate thrust bearing or pre-loaded
bearing capable of absorbing
considerable load is required. The
type of bearing to use is a___ bearing.
A. Deep grove ball
B. Double row angular contract
C. Tapered roller bearing
D. Wide type self-aligning
Answer:
B
87. Pulley made of _____ ordinarily
is 45 to 55% less in weight and
2.35 to 2.70% less slippage
compared with ___ pulley
A.Iron/steel
B.Steel/iron
C.Wood/iron
D. Wood/steel
Answer:
B
88. A plane perpendicular to the
gear axis
A. Normal plane
B. Pitch plane
C. Plane of rotation
D. Radius of gravitation
Answer:
C
89. The minimum value of
numerical combined in shock
sand fatigue factor to be applied
in every case to the computed
bending moment of the shaft is :
A. 2.0
B. 1.75
C. 1.5
D. 1.3
Answer:
C
90. What is the name given to
short shafts on machines?
A. Spindles
B. Head shafts
C. Core shafts
D. All of these
Answer:
A
91. The other name given to a
line shaft is:
A. Countershaft
B. Main shaft
C. Long shaft
D. Head shaft
Answer:
B
92. The speed at which the center of
mass will be equal the deflecting
forces on the shaft; the shaft with its
attached bodies will then vibrate
violently, since the centrifugal force
changes its direction as the shaft turns
in:
A. Nominal speed
B. Critical speed
C. Relative speed
D.Mean speed
Answer:
B
93. An old rule of thumb for
transmission shafting is that the
deflection should not exceed ____
of length between supports.
A. 0.01 in. per foot
B.0.08 in. per foot
C.0.02 in. per foot
D. 0.05 in per foot
Answer:
A
94. For transmission shaft the
allowable deflection is 1 degree
in a length of _____ diameters.
A. 20
B. 25
C. 30
D. 40
Answer:
A
95. What is the limiting torsional
deflection for machinery shafts, if
the criteria of limiting torsional
deflection vary from 0.080 per foot
of length?
A.10
B. 2.50
C. 20
D. 3.50
Answer:
A
96. Bevel gears of sizes 5 in. to
15 in. should not be lift or
depress more than _____, as
gleason statement
A. 0.004
B. 0.003
C. 0.002
D. 0.001
Answer:
B
97. What kind of key that
allows the hub to move along
the shaft?
A. Woodruff key
B. Feather key
C. Gibbs key
D. Square key
Answer:
B
98. What is the other name for
Kennedy key?
A. Tangential key
B. Woodruff key
C. Saddle key
D. Rollpin
Answer:
A
99. What type of fits used for
involute spline?
A. Close fit
B. Press fit
C. Sliding fit
D. All of these
Answer:
D
100. It is used for permanent
fits and similar to involute
splines except that the pressure
angle is 14.50.
A. Separation load
B. Spline shaft
C. Stub serrations
D. Involute serrationsAnswer:
D