• if 1080.steel (0.80 wt.% C) is annealed
by very low cooling from 1000 deg C
(1832 deg 5) to ambient temperature,
its microstoture will consist solely of:
a.
b.
c.
d.
Pearlite
Bainite
Cementile
Martensite
• if 1080.steel (0.80 wt.% C) is annealed
by very low cooling from 1000 deg C
(1832 deg 5) to ambient temperature,
its microstoture will consist solely of:
a.
b.
c.
d.
Pearlite
Bainite
Cementile
Martensite
• which of the following is not a
method of nondestructive testing of
steel castings and forging?
a.
b.
c.
d.
Chemical analysis
Magnetic particle
Ultrasonic
Liquid penetrant
• which of the following is not a
method of nondestructive testing of
steel castings and forging?
a.
b.
c.
d.
Chemical analysis
Magnetic particle
Ultrasonic
Liquid penetrant
• compressive strength of fully cured
concrete is most directly related to:
a.
b.
c.
d.
sand gravel
fineness modulus
aggregate gradation
water cement ratio
• compressive strength of fully cured
concrete is most directly related to:
a.
b.
c.
d.
sand gravel
fineness modulus
aggregate gradation
water cement ratio
• all of the following groups of plastic
are thermoplastic, except:
a. polyvinyl chloride (PVC) and
polyvinyl acetate
b. polyethlene, polypropylene, and
polystyrene
c. tetraflouroethylene (teflon) and
other fluorocarbons
d. phenolics, melamine and epoxy
• all of the following groups of plastic
are thermoplastic, except:
a. polyvinyl chloride (PVC) and
polyvinyl acetate
b. polyethlene, polypropylene, and
polystyrene
c. tetraflouroethylene (teflon) and
other fluorocarbons
d. phenolics, melamine and epoxy
• a gear with teeth on the outer
cylindrical surface.
a.
b.
c.
d.
worm gear
external gear
internal gear
bevel gear
• a gear with teeth on the outer
cylindrical surface.
a.
b.
c.
d.
worm gear
external gear
internal gear
bevel gear
• a circle coinciding with a tangent to
the bottom of the tooth space.
a.
b.
c.
d.
Pitch
Internal diagram
Dedendum
Root circle
• a circle coinciding with a tangent to
the bottom of the tooth space.
a.
b.
c.
d.
Pitch
Internal diagram
Dedendum
Root circle
• cutting a hole by means of a rotating
tool or the work may revolve and the
tool remain fixed as in the lathe.
a.
b.
c.
d.
Boring
Milling
Brazing
Bevel gear
• cutting a hole by means of a rotating
tool or the work may revolve and the
tool remain fixed as in the lathe.
a.
b.
c.
d.
Boring
Milling
Brazing
Bevel gear
• fusion process in which the metal is
heated to a state of fusion permitting
to flow together into a solid joint.
a.
b.
c.
d.
Soldering
Resistance
Oxyacetylene
Brazing
• fusion process in which the metal is
heated to a state of fusion permitting
to flow together into a solid joint.
a.
b.
c.
d.
Soldering
Resistance
Oxyacetylene
Brazing
• the process of of checking or
producing checkers on the surface of a
piece by rolling checkered depression
into the surface.
a.
b.
c.
d.
Indexing
Knurling
Squaring
Laying out
• the process of of checking or
producing checkers on the surface of a
piece by rolling checkered depression
into the surface.
a.
b.
c.
d.
Indexing
Knurling
Squaring
Laying out
• the clearance between the tooth
profile of gear tooth.
a.
b.
c.
d.
Backlash
Gear rack
Addendum
Dedendum
• the clearance between the tooth
profile of gear tooth.
a.
b.
c.
d.
Backlash
Gear rack
Addendum
Dedendum
• when meshed with a gear, it is used
to change rotary motion to
reciprocating motion
a.
b.
c.
d.
bevel gear
worn gear
super gear
gear rack
• when meshed with a gear, it is used
to change rotary motion to
reciprocating motion
a.
b.
c.
d.
bevel gear
worn gear
super gear
gear rack
• the distance from the denter of of
one tooth of a gear to the center of the
next consecutive tooth measured on
the pitch.
a.
b.
c.
d.
pitch circle
circular pitch
diametral pitch
pitch diameter
• the distance from the denter of of
one tooth of a gear to the center of the
next consecutive tooth measured on
the pitch.
a.
b.
c.
d.
pitch circle
circular pitch
diametral pitch
pitch diameter
• an operation of making a cone
shaped enlargement of the end of a
hole, as for a recess for a flathead
screw.
a.
b.
c.
d.
Knurling
Counter sinking
Indexing
Boring
• an operation of making a cone
shaped enlargement of the end of a
hole, as for a recess for a flathead
screw.
a.
b.
c.
d.
Knurling
Counter sinking
Indexing
Boring
• tool when pressed into a finished
hole in a piece of work, provide centers
on which the piece may be turned or
otherwise machined
a.
b.
c.
d.
Spindle
Jaws
Clock
Mandrel
• tool when pressed into a finished
hole in a piece of work, provide centers
on which the piece may be turned or
otherwise machined
a.
b.
c.
d.
Spindle
Jaws
Clock
Mandrel
• the total deformation measured in
the direction of the line of stress.
a.
b.
c.
d.
Tolerance
Variance
Poisson's ratio
Strain
• the total deformation measured in
the direction of the line of stress.
a.
b.
c.
d.
Tolerance
Variance
Poisson's ratio
Strain
• the process of producing a variety of
surface by using a circular type cutter
with multiple teeth.
a.
b.
c.
d.
Planning
Milling
Shaping
Brazing
• the process of producing a variety of
surface by using a circular type cutter
with multiple teeth.
a.
b.
c.
d.
Planning
Milling
Shaping
Brazing
• alloy steel known its resistance to
corrosion, abrasion and wear that is usually
ideal for mill grinding ore in cement and
concentrator application. it is usually
combine with molybdenum to increase the
depth hardening.
a.
b.
c.
d.
manganese steel
chromium-moly steel
chrome nickel alloy steel
manganese-moly steel
• alloy steel known its resistance to
corrosion, abrasion and wear that is usually
ideal for mill grinding ore in cement and
concentrator application. it is usually
combine with molybdenum to increase the
depth hardening.
a.
b.
c.
d.
manganese steel
chromium-moly steel
chrome nickel alloy steel
manganese-moly steel
• killed steel is very much associated
with
a.
b.
c.
d.
Manganese
Sulfur
Phosphorious
Silicon
• killed steel is very much associated
with
a.
b.
c.
d.
Manganese
Sulfur
Phosphorious
Silicon
• which of the following does cold-working cause?
a. elongation of grains in the flow direction, an increase
in dislocation density, and an overall increase in
energy of the metal
b. elongation of grains in the flow direction, a decrease
in dislocation density, and an overall decrease in
energy of the metal
c. elongation of grains in the flow direction, a decrease
in dislocation density, and an overall increse in
energy of the metal
d. elongation of grins in the flow direction,a decrease
in dislocation density, and an overall decrease in
energy of the metal
• which of the following does cold-working cause?
a. elongation of grains in the flow direction, an increase
in dislocation density, and an overall increase in
energy of the metal
b. elongation of grains in the flow direction, a decrease
in dislocation density, and an overall decrease in
energy of the metal
c. elongation of grains in the flow direction, a decrease
in dislocation density, and an overall increse in
energy of the metal
d. elongation of grins in the flow direction,a decrease
in dislocation density, and an overall decrease in
energy of the metal
• which of the following of the following
statements is false?
a. there is a considerable increase in the
hardness and strength of a cold-worked metal
b. cold-working a metal significantly reduces its
ductility
c. cold working cause a slight decrease in the
density and electrical conductivity of metal
d. cold working decrease the yield point of the
metal
• which of the following of the following
statements is false?
a. there is a considerable increase in the
hardness and strength of a cold-worked metal
b. cold-working a metal significantly reduces its
ductility
c. cold working cause a slight decrease in the
density and electrical conductivity of metal
d. cold working decrease the yield point of the
metal
• which of the following correctly describes atom
loacated at grain boundaries?
a. they are subjected to the same type of interatomic forces that are present in the interior
atoms of the crystals
b. they are located primarily in highly strained
and distorted positions
c. they have a higher free energy thab atoms in
the undisturbed part of the crystal lattice
d. all them are correct
• which of the following correctly describes atom
loacated at grain boundaries?
a. they are subjected to the same type of interatomic forces that are present in the interior
atoms of the crystals
b. they are located primarily in highly strained
and distorted positions
c. they have a higher free energy thab atoms in
the undisturbed part of the crystal lattice
d. all them are correct
• which of the following statements is
false?
a. hot working cause much strain
hardening of the metal
b. hot working increase the density of the
metal
c. one of the primary goals of hot working
is to produced fine grained material
d. in hot working, no noticeable change in
mechanical properties occur
• which of the following statements is
false?
a. hot working cause much strain
hardening of the metal
b. hot working increase the density of the
metal
c. one of the primary goals of hot working
is to produced fine grained material
d. in hot working, no noticeable change in
mechanical properties occur
• which of the statements dexcribe the glass transition
temperature?
I. it is the temperature at which the rate of volume
contraction increas abruptly
II. it is the temperature at which residual stresses in
the glass can be relieved
III. it is the point where the material behaves more like
a solid than a viscous liquid
a.
b.
c.
d.
I only
I and II
II and III
I and III
• which of the statements dexcribe the glass transition
temperature?
I. it is the temperature at which the rate of volume
contraction increas abruptly
II. it is the temperature at which residual stresses in
the glass can be relieved
III. it is the point where the material behaves more like
a solid than a viscous liquid
a.
b.
c.
d.
I only
I and II
II and III
I and III
• which of the following is not a
structural class of steels?
a.
b.
c.
d.
Carbon
High strength, low alloy
Tool & die
Stainless
• which of the following is not a
structural class of steels?
a.
b.
c.
d.
Carbon
High strength, low alloy
Tool & die
Stainless
• low carbon steels are generally used in
the "as rolled" or "as fabricated" state.
whay is the reason for this?
a. they come in many different shapes
and thickness
b. their strength generally cannot be
increase by heat treatment
c. they degrade severely under heat
treatment
d. their chromium content is low
• low carbon steels are generally used in
the "as rolled" or "as fabricated" state.
whay is the reason for this?
a. they come in many different shapes
and thickness
b. their strength generally cannot be
increase by heat treatment
c. they degrade severely under heat
treatment
d. their chromium content is low
• which of the following statement is false?
a. high strength low alloys steel are not as
strong as non alloy low carbon steels
b. small amounts of copper increase the tensile
strength of steels
c. additions of small amounts of silicon to steel
can cause a marked decrease in yield strength
of steel
d. small amounts of phosphorus in steels can
provide an increase in the yield strength of
steel
• which of the following statement is false?
a. high strength low alloys steel are not as
strong as non alloy low carbon steels
b. small amounts of copper increase the tensile
strength of steels
c. additions of small amounts of silicon to steel
can cause a marked decrease in yield strength
of steel
d. small amounts of phosphorus in steels can
provide an increase in the yield strength of
steel
• which of the following statements is false?
a. stainless steels contain large amount of
chromium
b. there are three types of stainless steel;
matensitic, austenitic, and ferritic
c. the non magnetic stainless steels contain
large ammount of nickel
d. stabilization of the face centered cubic crystal
structure of stainless steels impacts a
nonmagnetic characteristic to the alloy
• which of the following statements is false?
a. stainless steels contain large amount of
chromium
b. there are three types of stainless steel;
matensitic, austenitic, and ferritic
c. the non magnetic stainless steels contain
large ammount of nickel
d. stabilization of the face centered cubic crystal
structure of stainless steels impacts a
nonmagnetic characteristic to the alloy
• which of the following would not
likely required a steel containing 0.6%
carbon that has been spheroidized,
cold drawn, and slightly tempered?
a.
b.
c.
d.
a bridge beam
a water pipe
a cutting tool
a ball bearing
• which of the following would not
likely required a steel containing 0.6%
carbon that has been spheroidized,
cold drawn, and slightly tempered?
a.
b.
c.
d.
a bridge beam
a water pipe
a cutting tool
a ball bearing
• which of the following statements is false?
a. low alloy steels are a minor group and rarely
used
b. low alloy steels ate used in the heat treated
condition
c. low alloys steels contains small amounts of
nickel and chromium
d. the addition of small amounts of
molybdenum to low-allow steels makes it
possible to harden and strengthen thick
pieces of the metal by heat treatment
• which of the following statements is false?
a. low alloy steels are a minor group and rarely
used
b. low alloy steels ate used in the heat treated
condition
c. low alloys steels contains small amounts of
nickel and chromium
d. the addition of small amounts of
molybdenum to low-allow steels makes it
possible to harden and strengthen thick
pieces of the metal by heat treatment
• under which type of loading does
fatigue occur?
a.
b.
c.
d.
static load
plane load
high load
repeated load
• under which type of loading does
fatigue occur?
a.
b.
c.
d.
static load
plane load
high load
repeated load
• a specimen is is subjected to a laod.
when the load is removed, the strain
disappears. form this information,
which of the following can be deduced
about this material.
a.
b.
c.
d.
it is elastic
it is plastic
it has a high modulus of elasticity
it does not obey hooke's law
• a specimen is is subjected to a laod.
when the load is removed, the strain
disappears. form this information,
which of the following can be deduced
about this material.
a.
b.
c.
d.
it is elastic
it is plastic
it has a high modulus of elasticity
it does not obey hooke's law
• which of the following metal is
nonmagnetic?
a.
b.
c.
d.
cast iron
alloy steel
stainless steel
manganese steel
• which of the following metal is
nonmagnetic?
a.
b.
c.
d.
cast iron
alloy steel
stainless steel
manganese steel
• which of the following is not used to
temper steel?
a.
b.
c.
d.
brine or salt bath
oil bath
water bath
steam bath
• which of the following is not used to
temper steel?
a.
b.
c.
d.
brine or salt bath
oil bath
water bath
steam bath
• which of the following is not a type of
power hacksaw?
a.
b.
c.
d.
power hacksaw
crosscut saw
horizontal power saw
band saw
• which of the following is not a type of
power hacksaw?
a.
b.
c.
d.
power hacksaw
crosscut saw
horizontal power saw
band saw
• which of the following is not a
strength property of a metal?
a.
b.
c.
d.
tesile strength
rocking strength
torsional strength
fatigue strength
• which of the following is not a
strength property of a metal?
a.
b.
c.
d.
tesile strength
rocking strength
torsional strength
fatigue strength
• which of the following metals melts
slowly and becomes dull red before
melting?
a.
b.
c.
d.
manganese steel
stainless steel
cast iron
wrought iron
• which of the following metals melts
slowly and becomes dull red before
melting?
a.
b.
c.
d.
manganese steel
stainless steel
cast iron
wrought iron
• which area of the machine shop is
where metal is being melted to from
them into new shape?
a.
b.
c.
d.
welding area
mass production area
tool and die area
foundry area
• which area of the machine shop is
where metal is being melted to from
them into new shape?
a.
b.
c.
d.
welding area
mass production area
tool and die area
foundry area
• which area of the machine shop is
where quality, quantity and popularity
of final products depend?
a.
b.
c.
d.
stock area
assembly area
quality and control area
production area
• which area of the machine shop is
where quality, quantity and popularity
of final products depend?
a.
b.
c.
d.
stock area
assembly area
quality and control area
production area
•one important skill that operators of
machine tools must have is an
understanding of measurement which
demand…
a.
b.
c.
d.
Precision
Speed
Neatness
Sociability
•one important skill that operators of
machine tools must have is an
understanding of measurement which
demand…
a.
b.
c.
d.
Precision
Speed
Neatness
Sociability
•a machine used in shaping metals by
means of abrasive wheel or the
removal of metals with an abrasive is
called…
a.
b.
c.
d.
Planer machine
Power saw
Shaper
Grinder
•a machine used in shaping metals by
means of abrasive wheel or the
removal of metals with an abrasive is
called…
a.
b.
c.
d.
Planer machine
Power saw
Shaper
Grinder
•the ability of metal to withstand loads
without breaking down is..
a.
b.
c.
d.
Stress
Strain
Strength
Elasticity
•the ability of metal to withstand loads
without breaking down is..
a.
b.
c.
d.
Stress
Strain
Strength
Elasticity
•the ability of metal resisting crushes..
a.
b.
c.
d.
Torsional strength
Compressive strength
Bending strength
Fatigue strength
•the ability of metal resisting crushes..
a.
b.
c.
d.
Torsional strength
Compressive strength
Bending strength
Fatigue strength
•the ability of metal to withstand
forces allowing member to twist is..
a.
b.
c.
d.
Torsional strength
Bending strength
Fatigue strength
Compressive strength
•the ability of metal to withstand
forces allowing member to twist is..
a.
b.
c.
d.
Torsional strength
Bending strength
Fatigue strength
Compressive strength
•which of the following is not a part of
a lathe machine?
a.
b.
c.
d.
Headstock
Tailstock
Carriage
Fan
•which of the following is not a part of
a lathe machine?
a.
b.
c.
d.
Headstock
Tailstock
Carriage
Fan
•the machine which can flatten surface
on a horizontal, vertical, or angular
plane is..
a.
b.
c.
d.
Shaper machine
Drilling machine
Power saw
Welding machine
•the machine which can flatten surface
on a horizontal, vertical, or angular
plane is..
a.
b.
c.
d.
Shaper machine
Drilling machine
Power saw
Welding machine
•which of the following is not part of
the headstock?
a.
b.
c.
d.
Spindle
Back gear
Motor
Anvil
•which of the following is not part of
the headstock?
a.
b.
c.
d.
Spindle
Back gear
Motor
Anvil
•ferrous metals contain large amount
of..
a.
b.
c.
d.
Carbon
Manganese
Sulfur
Phosphorus
•ferrous metals contain large amount
of..
a.
b.
c.
d.
Carbon
Manganese
Sulfur
Phosphorus
•which of the following is not a
classification of an iron ore?
a.
b.
c.
d.
Hermatite
Magnetite
Sulfurite
Siderite
•which of the following is not a
classification of an iron ore?
a.
b.
c.
d.
Hermatite
Magnetite
Sulfurite
Siderite
•which of the following is not the work
of a machinist?
a.
b.
c.
d.
Grinding
Honing
Reboring
Overhauling
•which of the following is not the work
of a machinist?
a.
b.
c.
d.
Grinding
Honing
Reboring
Overhauling
•which of the following is not a kind of
madrel?
a.
b.
c.
d.
Expansion mandrel
Taper mandrel
Contraction mandrel
Gang mandrel
•which of the following is not a kind of
madrel?
a.
b.
c.
d.
Expansion mandrel
Taper mandrel
Contraction mandrel
Gang mandrel
•which of the following is not a method
of centering work piece in a lathe?
a.
b.
c.
d.
Toolbit method
Surface gauge method
Dial indicator method
Plastigage method
•which of the following is not a method
of centering work piece in a lathe?
a.
b.
c.
d.
Toolbit method
Surface gauge method
Dial indicator method
Plastigage method
•the kind of center which is being
attached and meshed to the tailstock
spindle which is also static while the
work is rotating is..
a.
b.
c.
d.
Live center
Dead center
Indeterminant
Zero
•the kind of center which is being
attached and meshed to the tailstock
spindle which is also static while the
work is rotating is..
a.
b.
c.
d.
Live center
Dead center
Indeterminant
Zero
•for a system to be equilibrium, the
sum of the external forces acting on
the system must be..
a.
b.
c.
d.
Equal to unity
A maximum
Indeterminant
Zero
•for a system to be equilibrium, the
sum of the external forces acting on
the system must be..
a.
b.
c.
d.
Equal to unity
A maximum
Indeterminant
Zero
•the mass moment of inertia of a
cylinder about its central axis
perpendicular to a circular cross
section is..
a.
b.
c.
d.
Directly proportional to its radius
Independent of its radius
Directly proportional to its length
Independent of its length
•the mass moment of inertia of a
cylinder about its central axis
perpendicular to a circular cross
section is..
a.
b.
c.
d.
Directly proportional to its radius
Independent of its radius
Directly proportional to its length
Independent of its length
•in general. What are the effects of
cold working a metal?
a. Increase strength and ductility
b. Increase
strength,
decrease
ductility
c. Decrease strength and ductility
d. Decrees strength increase ductility
•in general. What are the effects of
cold working a metal?
a. Increase strength and ductility
b. Increase
strength,
decrease
ductility
c. Decrease strength and ductility
d. Decrees strength increase ductility
•which of the following are true statement
about the modulus of elasticity. E?
a. It is the same as the rupture modulus
b. It is the slope of the stress strain
diagram in the linearly elastic region
c. It is the ratio of stress to volumetric
stress
d. Its value depends only on the
temperature of the material
•which of the following are true statement
about the modulus of elasticity. E?
a. It is the same as the rupture modulus
b. It is the slope of the stress strain
diagram in the linearly elastic region
c. It is the ratio of stress to volumetric
stress
d. Its value depends only on the
temperature of the material
•to which of the following can the large
discrepancy between the actual and
theoretical strengths of metals mainly
be attributed.
a.
b.
c.
d.
Heat
Dislocation
Low density
Stress direction
•to which of the following can the large
discrepancy between the actual and
theoretical strengths of metals mainly
be attributed.
a.
b.
c.
d.
Heat
Dislocation
Low density
Stress direction
•a shaft made of good quality steel breaks in half
due to fatigue. What should the surface of the
fracture site look like?
a.
b.
c.
d.
Like a cup and cone
Quite smooth to the unaided eye, yet ripples
are apparent under low power magnification
Smooth over most of the surface although it
appears torn at the location of fracture
Very jagged and rough
•a shaft made of good quality steel breaks in half
due to fatigue. What should the surface of the
fracture site look like?
a.
b.
c.
d.
Like a cup and cone
Quite smooth to the unaided eye, yet ripples
are apparent under low power magnification
Smooth over most of the surface although it
appears torn at the location of fracture
Very jagged and rough
•what does charpy impact test measure?
I. The energy required to break the test
sample
II. The strength of a sample
III. The ductile and brittle transition point
of metals.
a.
b.
c.
d.
I only
II only
III only
I and III
•what does charpy impact test measure?
I. The energy required to break the test
sample
II. The strength of a sample
III. The ductile and brittle transition point
of metals.
a.
b.
c.
d.
I only
II only
III only
I and III
•under very slow deformation and at
high temperature, it is possible to have
some plastic in a crystal at a shear
lower than the critical shear stress.
What is the phenomenon called?
a.
b.
c.
d.
Slip
Twining
Creep
Bending
•under very slow deformation and at
high temperature, it is possible to have
some plastic in a crystal at a shear
lower than the critical shear stress.
What is the phenomenon called?
a.
b.
c.
d.
Slip
Twining
Creep
Bending
•which of the following are true regarding the ductile to
brittle transition temperature?
I.
It is important for structure in cold environment
II.
It is the point at which the size of the shear lip or
tearing rim goes to zero
III. It is the temperature at which 20 joules of energy
cause failure in charpy V notch specimen of
standard dimensions.
a.
b.
c.
d.
I only
I and II
II and III
I and III
•which of the following are true regarding the ductile to
brittle transition temperature?
I.
It is important for structure in cold environment
II.
It is the point at which the size of the shear lip or
tearing rim goes to zero
III. It is the temperature at which 20 joules of energy
cause failure in charpy V notch specimen of
standard dimensions.
a.
b.
c.
d.
I only
I and II
II and III
I and III
•which of the following are true regarding
creep?
I. It is cause by the diffusion of vacancies
to edge dislocations, permitting
dislocation climb
II. It involve the whole grain sliding
III. It may involve the whole grain sliding
a.
b.
c.
d.
I only
I and II
II and III
I, II and III
•which of the following are true regarding
creep?
I. It is cause by the diffusion of vacancies
to edge dislocations, permitting
dislocation climb
II. It involve the whole grain sliding
III. It may involve the whole grain sliding
a.
b.
c.
d.
I only
I and II
II and III
I, II and III
•in molecules of the same composition,
what are variation of atomic
arrangements
a.
b.
c.
d.
Polymers
Non-crystalline
Monomers
Isomers
•in molecules of the same composition,
what are variation of atomic
arrangements
a.
b.
c.
d.
Polymers
Non-crystalline
Monomers
Isomers
•which of the following materials is not
a viscoelastic material?
a.
b.
c.
d.
Plastic
Metal
Rubber
Glass
•which of the following materials is not
a viscoelastic material?
a.
b.
c.
d.
Plastic
Metal
Rubber
Glass
•what is the strong bond between
hydrogen atom know as?
a.
b.
c.
d.
Ionic bond
Metallic bond
Ionic & metallic bond
Glass
•what is the strong bond between
hydrogen atom know as?
a.
b.
c.
d.
Ionic bond
Metallic bond
Ionic & metallic bond
Glass
•Hooke's law for an isotropic
homogeneous medium experiencing
one-dimensional stress is..
a. Stress – E(strain)
b. Strains – E(stress)
c. (Force)(area) = E(change in
length)(length)
d. Force/Area = E(length)/(change in
length)
•Hooke's law for an isotropic
homogeneous medium experiencing
one-dimensional stress is..
a. Stress – E(strain)
b. Strains – E(stress)
c. (Force)(area) = E(change in
length)(length)
d. Force/Area = E(length)/(change in
length)
•the modulus of rigidity of a steel member
is:
a. A function of the length and depth
b. Defined as the unit shear stress divided
by the unit shear deformation
c. Equal to the modulus of elasticity
divided by the unit shear deformation
d. Defined as the length divided by the
moment of inertia
•the modulus of rigidity of a steel member
is:
a. A function of the length and depth
b. Defined as the unit shear stress divided
by the unit shear deformation
c. Equal to the modulus of elasticity
divided by the unit shear deformation
d. Defined as the length divided by the
moment of inertia
•a thin homogenous metallic plate containing a
hole is heated sufficiently to cause expansion. If
the coefficient of surface expansion is linear, the
area of the hole will:
a.
b.
c.
d.
Increase at twice the rate area of the metal
increase
Increase at the same rate as the area of the
metal increase
Stay the same
Decrease at the same rate ass the area of
the metal increases
•a thin homogenous metallic plate containing a
hole is heated sufficiently to cause expansion. If
the coefficient of surface expansion is linear, the
area of the hole will:
a.
b.
c.
d.
Increase at twice the rate area of the metal
increase
Increase at the same rate as the area of the
metal increase
Stay the same
Decrease at the same rate ass the area of
the metal increases
•the three moment equation may be
used to analyze
a.
b.
c.
d.
A continuous beam
A beam loaded at the third points
A step tapered column
A three element composite beam
•the three moment equation may be
used to analyze
a.
b.
c.
d.
A continuous beam
A beam loaded at the third points
A step tapered column
A three element composite beam
•in a long column (slenderness ratio > 160)
which of the following has the greatest
influence on its tendency to buckle under a
compressive load.
a. The modulus of elasticity of a material
b. The compressive strength of the
material
c. The radius of gyration of the column
d. The length of the column
•in a long column (slenderness ratio > 160)
which of the following has the greatest
influence on its tendency to buckle under a
compressive load.
a. The modulus of elasticity of a material
b. The compressive strength of the
material
c. The radius of gyration of the column
d. The length of the column
•the area of the shear diagram of a beam
between any two points on the beam is
equal to the..
a. change in shear between the two
points
b. total shear beyond the two points
c. average moment between the two
points
d. change in moment between the two
points
•the area of the shear diagram of a beam
between any two points on the beam is
equal to the..
a. change in shear between the two
points
b. total shear beyond the two points
c. average moment between the two
points
d. change in moment between the two
points
•poisson's ration is principally use in..
a. the determination of capability of a
material for being shaped
b. the determination of capability of a
material for plastic deformation
without fracture
c. stress - strain relationship where
stresses are applied in more than one
direction
d. the determination of modulus of
toughness
•poisson's ration is principally use in..
a. the determination of capability of a
material for being shaped
b. the determination of capability of a
material for plastic deformation
without fracture
c. stress - strain relationship where
stresses are applied in more than one
direction
d. the determination of modulus of
toughness
•young's modulus of elasticity for a
material can be calculated indirectly from
which of the following properties of the
material?
a. temperature coefficient of expansion
and dielectric constant
b. temperature coefficient of expansion
and specific heat
c. density and velocity of sound in the
material
d. density and interatomic spacing in the
•young's modulus of elasticity for a
material can be calculated indirectly from
which of the following properties of the
material?
a. temperature coefficient of expansion
and dielectric constant
b. temperature coefficient of expansion
and specific heat
c. density and velocity of sound in the
material
d. density and interatomic spacing in the
•the linear portion of the stress-strain
diagram of steel is known as the..
a.
b.
c.
d.
modulus of elasticity
plastic range
irreversible range
elastic range
•the linear portion of the stress-strain
diagram of steel is known as the..
a.
b.
c.
d.
modulus of elasticity
plastic range
irreversible range
elastic range
•"modulus of resilience" is..
a. the same as the modulus of
elasticity
b. a measure of the materials ability
to store strain energy
c. the reciprocal of the modulus of
elasticity
d. a measure of the deflection of a
member
•"modulus of resilience" is..
a. the same as the modulus of
elasticity
b. a measure of the materials ability
to store strain energy
c. the reciprocal of the modulus of
elasticity
d. a measure of the deflection of a
member
•imperfection within metallic crystal
structures may be all of the following,
except:
a. lattice vacancies, or extra intertitial
atoms
b. ion pairs missing in tonic crystals
(shotky imperfection)
c. displacement of atoms of interstitial
sites (frankel defects)
d. twinning to form mirror image along a
low energy boundary or crystal plane
•imperfection within metallic crystal
structures may be all of the following,
except:
a. lattice vacancies, or extra intertitial
atoms
b. ion pairs missing in tonic crystals
(shotky imperfection)
c. displacement of atoms of interstitial
sites (frankel defects)
d. twinning to form mirror image along a
low energy boundary or crystal plane
•all of the following statements about strain
energy are correct, except:
a. it is less for sites at grain boundaries than for
internal sites within the crystal structure
b. it is caused by generation and movement of
dislocations through shear or plastic
deformation
c. it results from trapped vacancies in the crystal
lattice
d. it is proportional to length of dislocation,
shear modulus, and shortest distance
between equivalent lattice sites (points)
•all of the following statements about strain
energy are correct, except:
a. it is less for sites at grain boundaries than for
internal sites within the crystal structure
b. it is caused by generation and movement of
dislocations through shear or plastic
deformation
c. it results from trapped vacancies in the crystal
lattice
d. it is proportional to length of dislocation,
shear modulus, and shortest distance
between equivalent lattice sites (points)
•all of the following statements about diffusion and
grain growth are correct, except:
a. vacancies and interstitial atoms affect diffusion,
whose net result is movement of atoms to produce a
structure of less strain and of uniform composition
b. diffusion is irreversible and requires an activated
energy; its rate increase exponentially with
temperature. it follows the diffusion equation where
flux equals diffusivity times concentration gradient
c. activation energy for diffusion through structures in
inversely proportional to atomic packing factor in
the lattice
d. atoms can diffuse both within crystals and across
grain (crystal) boundaries
•all of the following statements about diffusion and
grain growth are correct, except:
a. vacancies and interstitial atoms affect diffusion,
whose net result is movement of atoms to produce a
structure of less strain and of uniform composition
b. diffusion is irreversible and requires an activated
energy; its rate increase exponentially with
temperature. it follows the diffusion equation where
flux equals diffusivity times concentration gradient
c. activation energy for diffusion through structures in
inversely proportional to atomic packing factor in
the lattice
d. atoms can diffuse both within crystals and across
grain (crystal) boundaries
•all of the following statements about slip are correct,
except:
a. slip, or shear along crystal planes, results in an
irreversible plastic deformation or permanent set
b. it involves only a few atoms at a time in a series of
small dislocation movements
c. slip planes lie in the direction of the longest distance
between neighboring sites in the crystal lattice
d. ease of slippage is directly related to number of low
energy slip planes existent in the lattice structure
•all of the following statements about slip are correct,
except:
a. slip, or shear along crystal planes, results in an
irreversible plastic deformation or permanent set
b. it involves only a few atoms at a time in a series of
small dislocation movements
c. slip planes lie in the direction of the longest distance
between neighboring sites in the crystal lattice
d. ease of slippage is directly related to number of low
energy slip planes existent in the lattice structure
•when a metal is cold worked all of the
following generally occur except:
a. recrystallization temperature
decrease
b. ductility decrease
c. grains become equi-axed
d. slip or twinning occurs
•when a metal is cold worked all of the
following generally occur except:
a. recrystallization temperature
decrease
b. ductility decrease
c. grains become equi-axed
d. slip or twinning occurs
•all of the following statements about strain
hardening are correct except:
a. strain hardening strengthens. resistance to
deformation increase with the amount of
strain present
b. strain hardening is relieved during softening,
annealing above recrystallization temperature
c. strain hardening is produce by cold working
(deformation below the recrystallization
temperature)
d. more strain hardening requires more timetemperature exposure for relief
•all of the following statements about strain
hardening are correct except:
a. strain hardening strengthens. resistance to
deformation increase with the amount of
strain present
b. strain hardening is relieved during softening,
annealing above recrystallization temperature
c. strain hardening is produce by cold working
(deformation below the recrystallization
temperature)
d. more strain hardening requires more timetemperature exposure for relief
•all of the following processes strengthens metal,
except:
a. annealing above the recrystallization temperature
b. work hardening by mechanical deformation below
the rectystallization temperature (cold working)
c. precipitation processes, such as age hardening,
which produce high strength by formation of
submicroscopic phases during low temperature heat
treatment
d. heat treatments such as quenching and tampering,
for production of a finer microstructure
•all of the following processes strengthens metal,
except:
a. annealing above the recrystallization temperature
b. work hardening by mechanical deformation below
the rectystallization temperature (cold working)
c. precipitation processes, such as age hardening,
which produce high strength by formation of
submicroscopic phases during low temperature heat
treatment
d. heat treatments such as quenching and tampering,
for production of a finer microstructure
•the valence band model used to explain metallic
conduxtion is based on all of the following statement,
except:
a. each valence band may contain up to 2n electrons/n
atoms; each electron lies at a discretely different
energy level
b. fermi energy level, EF, is essentially temperature
independent, and is the energy at which 50% of
available energy states are occupied
c. a conduction band lies at the next higher set of
electronic energy levels above those occupied at the
ground state
d. conduction occurs when an electron remains in its
existent valence band
•the valence band model used to explain metallic
conduxtion is based on all of the following statement,
except:
a. each valence band may contain up to 2n electrons/n
atoms; each electron lies at a discretely different
energy level
b. fermi energy level, EF, is essentially temperature
independent, and is the energy at which 50% of
available energy states are occupied
c. a conduction band lies at the next higher set of
electronic energy levels above those occupied at the
ground state
d. conduction occurs when an electron remains in its
existent valence band
•intrinsic silicon becomes extrinsically
conductive, with electrons as majority
carriers, when doped with which of the
following?
a.
b.
c.
d.
Nothing
Antimony
Boron
germanium
•intrinsic silicon becomes extrinsically
conductive, with electrons as majority
carriers, when doped with which of the
following?
a.
b.
c.
d.
Nothing
Antimony
Boron
germanium
•all of the following statements about ferromagnetism
are correct, except:
a. magnetic domains are small volumes existent within
a single crystal where atomic magnetic moments are
undirectionally aligned
b. domains are randomly oriented when
unmagnetized. on magnetization, domains oriented
with the external field grow at the expense of
unaligned domains
c. impurities, inclusions and strain hardening interfere
with change of domain boundaries, and add to the
permanency of a magnet
d. high magnetic susceptibility of ferromagnetic
material disappears below the curie temperature
•all of the following statements about ferromagnetism
are correct, except:
a. magnetic domains are small volumes existent within
a single crystal where atomic magnetic moments are
undirectionally aligned
b. domains are randomly oriented when
unmagnetized. on magnetization, domains oriented
with the external field grow at the expense of
unaligned domains
c. impurities, inclusions and strain hardening interfere
with change of domain boundaries, and add to the
permanency of a magnet
d. high magnetic susceptibility of ferromagnetic
material disappears below the curie temperature
•all of the following statements about steels are correct,
except:
a. yield strength of commercially available heat treated
alloy steels does not exceed 200,000 psi
b. high temperature alloys used in jet engine turbine
blades can withstand
c. abrasion resistance of extra strength steels may be
obtained by increasing hardness to 225-400 brinell at
the expense or some ductility and toughness
d. integranular corrosion of chromium-nickel stainless
steels reduced when stabilized by addition of
columbium (niobium), titanium, or tantalum to
preferentially for carbides and prevent chromium
depletion and chromium carbide precipitation in grain
boundary areas
•all of the following statements about steels are correct,
except:
a. yield strength of commercially available heat treated
alloy steels does not exceed 200,000 psi
b. high temperature alloys used in jet engine turbine
blades can withstand
c. abrasion resistance of extra strength steels may be
obtained by increasing hardness to 225-400 brinell at
the expense or some ductility and toughness
d. integranular corrosion of chromium-nickel stainless
steels reduced when stabilized by addition of
columbium (niobium), titanium, or tantalum to
preferentially for carbides and prevent chromium
depletion and chromium carbide precipitation in grain
boundary areas
•steel can be strengthened by all of the
following practice, except:
a.
b.
c.
d.
annealing
quenching and tempering
work hardening
grain refinement
•steel can be strengthened by all of the
following practice, except:
a.
b.
c.
d.
annealing
quenching and tempering
work hardening
grain refinement
•the moment of inertia of any plane
figure can be expressed in units of
length to the..
a.
b.
c.
d.
first power
second power
third power
fourth power
•the moment of inertia of any plane
figure can be expressed in units of
length to the..
a.
b.
c.
d.
first power
second power
third power
fourth power
•the vector which represents the sum
of a group of force vectors is called
the..
a.
b.
c.
d.
Magnitude
Resultant
Sum
Phase angle
•the vector which represents the sum
of a group of force vectors is called
the..
a.
b.
c.
d.
Magnitude
Resultant
Sum
Phase angle
•which of the following is not a vector
quantity?
a.
b.
c.
d.
Velocity
Speed
Acceleration
Displacement
•which of the following is not a vector
quantity?
a.
b.
c.
d.
Velocity
Speed
Acceleration
Displacement
•the stress in an elastic material is..
a. inversely proportional to the
material's yield strength
b. inversely proportional to the force
acting
c. proportional to the displacement of
the material acted upon by the force
d. proportional to the length of the
material subject to the force
•the stress in an elastic material is..
a. inversely proportional to the
material's yield strength
b. inversely proportional to the force
acting
c. proportional to the displacement of
the material acted upon by the force
d. proportional to the length of the
material subject to the force
•the "slenderness ratio" of a column is
generally defined as the ratio of its
a. length to its minimum width
b. unsupported length to its maximum
radius of gyration
c. length of its moment of inertia
d. unsupported length to its least
radius of gyration
•the "slenderness ratio" of a column is
generally defined as the ratio of its
a. length to its minimum width
b. unsupported length to its maximum
radius of gyration
c. length of its moment of inertia
d. unsupported length to its least
radius of gyration
•the linear portion of the stress-strain
diagram of steel is known as the
a.
b.
c.
d.
modulus elongation
plastic range
irreversible range
elastic range
•the linear portion of the stress-strain
diagram of steel is known as the
a.
b.
c.
d.
modulus elongation
plastic range
irreversible range
elastic range
•the ratio of the moment of inertia of
the cross section of a beam to the
section modulus is..
a.
b.
c.
d.
equal to the radius of gyration
equal to the area of cross section
a measure of distance
multiplied by the bending moment
to determine the stress
•the ratio of the moment of inertia of
the cross section of a beam to the
section modulus is..
a.
b.
c.
d.
equal to the radius of gyration
equal to the area of cross section
a measure of distance
multiplied by the bending moment
to determine the stress
•when an air entertainment agent is
introduced into a concrete mix
a.
b.
c.
d.
the strength will increase
the strength will decrease
the strength will not be affected
the water/cement ratio must be
reduced from 10-15%
•when an air entertainment agent is
introduced into a concrete mix
a.
b.
c.
d.
the strength will increase
the strength will decrease
the strength will not be affected
the water/cement ratio must be
reduced from 10-15%
•structural steel elements subjected to
torsion develop
a.
b.
c.
d.
tensile stress
compressive stress
shearing stress
moment
•structural steel elements subjected to
torsion develop
a.
b.
c.
d.
tensile stress
compressive stress
shearing stress
moment
•the deflection of beam is..
a. directly proportional to the modulus of
elasticity and moment of inertia
b. inversely proportional to the modulus
of elasticity and length of the beam
cubed
c. inversely proportional to the modulus
of elasticity and moment of inertia
d. directly proportional to the load
imposed and inversely to the length
squared
•the deflection of beam is..
a. directly proportional to the modulus of
elasticity and moment of inertia
b. inversely proportional to the modulus
of elasticity and length of the beam
cubed
c. inversely proportional to the modulus
of elasticity and moment of inertia
d. directly proportional to the load
imposed and inversely to the length
squared
•the differential of the shear equation
is which one of the following?
a.
b.
c.
d.
load on the beam
tensile strength of the beam
bending moment of the beam
slope of the elastic curve
•the differential of the shear equation
is which one of the following?
a.
b.
c.
d.
load on the beam
tensile strength of the beam
bending moment of the beam
slope of the elastic curve
•a vertically loaded beam, fixed at one
end and simply supported at the other
is indeterminate to what degree?
a.
b.
c.
d.
First
Second
Third
Fourth
•a vertically loaded beam, fixed at one
end and simply supported at the other
is indeterminate to what degree?
a.
b.
c.
d.
First
Second
Third
Fourth
•a thin walled pressurized vessel consists of
a right circular cylinder with flat ends.
midway between the ends the stress is
greatest in what direction?
a.
b.
c.
d.
Longitudinal
Circumferential
Radial
at an angle of 45 deg to the longitudinal
and circumferential direction
•a thin walled pressurized vessel consists of
a right circular cylinder with flat ends.
midway between the ends the stress is
greatest in what direction?
a.
b.
c.
d.
Longitudinal
Circumferential
Radial
at an angle of 45 deg to the longitudinal
and circumferential direction