Registration no:
ao
11o 5 454
B.Tech
Total Number of Pages: 03
Subject Code: PCME4306
5n Semester Regular/Back Paper
Examination December 2022
Subject Name: Theory of Machine-ll
Branch: Mechanical Engineering
Time: 3 Hours
Max Marks: 60
Question Code:
and any five from the rest.
Answer Question No.1 which is compulsory
indicate marks.
The figures in the right hand margin
Q1
Answer the following questions:
(1x10)
a} State the significance of turning moment diagrams.
b) State the law of gearing.
fluctuations, their
Though both the flywheel and the governor control speed
operations are different-Explain
How the pressure angle affects the follower motion?
el Differentiate between epicycloids and hypocycloids.
What are interchangeable gears?
8 If a spring of stiffness 'k' is cut into twO parts 'A' and 'B' of length a: B=2:3.
then the stiffness of spring 'A' will be?
Lh) Why porter governor is much more sensitive than that of watt governor?
differential
) Show that in a 1 degree of freedom system described by the
equation:
10 x+ 200 x+810x=0
is an over-damped system.
increases, then
If the ratioof the length of the connecting rod to crank radius
what happens to secondary unbalance force?
Q2
a
Differentiate between Davis steering and Ackerman steering gear. The track
(5)
arm of a Davis steering gear is at a distance of 192 mm from the front main
axle whereas the difference between their lengths is 96 mm. If the distance
between steering pivots of the main axle is 1.4 m, determine the length of the
chassis between the front and the rear wheels. Also, find the inclination of
the track arms to the longitudinal axis of the wheels.
b How cams are classified? Construct the displacement diagram of the follower
\ with the following specifications: (i) Nature of Motion: S.H.M (both stroke) (ii)
Lift= 6cm (ii) Outstroke= 60, Dwell-1= 30°,Return Stroke= 600
(5)
Q3 a The turning moment diagram for a multi cylinder IC engine is drawn to the
(5)
following scales
1 mm = 4.5° crank angle
1 mm = 650 N-m
During one revolution of the crank the areas with reference to the mean
torque line are (-) 28,(+) 380,(-) 260, (+)310, (-) 300, (+) 242, (-) 380, (+) 265
and (-) 229 mm². The mass of the system is 724.5 kg & radius of gyration is
0.699m. Engine speed is 400 rpm. Determine the co-efficient of fluctuation of
woth!
and
halt
every
in
settatt
the
speed. (assume the cycle is completed
angle
pressure
b) Two involute gears in mesh have 20
The
24.
toImodule.
the number of teeth on the pinion is
addendunn is equal
The pitch line velocity is 1.5 m/s
(5)
and the
Determine
(i) Length of arc of contact
(i) Contact ratio
(iiü) Sliding velocity
Q4 a
governor.
expression for height of a porter
If in a
With a neat sketch derive the
governor.
diagram of aspring controlled
The
N.
40
Explain the controlling force
is
weight of each governor ball
the
governor,
controlled
corresponding
spring
10 cm and 17.5 cm. The
extreme radii of rotation of balls are
and 400 N respectively.
controlling forces at these radiiare 250 N
controlling force (b) Coefficient of
Determine (a) General equation for
of the mechanism is
(5)
(5)
(the friction
insensitiveness at a radius of 15 cm
equivalent to 2.5 N at each ball)
Q5
mass of 2550 kg and rotates ataspeed
a)/ The rotor of the turbine of a ship has a
viewed from stern. The rotor has radius
of 3000 rpm counterclockwise when
the gyroscopic couple, if ship pitches 6
of gyration of 0.4 m. What will be
position and the bow is
degrees above and 6 degrees below the normal
pitching motion is simple
descending with its maximum velocity and the
harmonic with a periodic time of 50 seconds?
a
5) Describe with a neat sketch the effect of
a naval ship while
gyroscopic couple experienced by
(5)
(5)
rotor is in
taking a right turn and the rotation of
anticlockwise sense when viewed from stern.
Q6 , a Explain the partial balancing of locomotives. Also, derive expressions for
(5)
variation intractive force and swaying couple.
ch A single cylinder reciprocating engine has speed 240 rpm, stroke 300 mm,
(5)
mass of reciprocating parts 50 kg, mass of revolving parts at 150 mm radius is
37 kg. If two third of the reciprocating parts and all the revolving parts are to
be balanced, find
() The balance mass required at a radius of 400 mm.
(ii) The residual unbalanced force when the crank has rotated 60° from top
dead centre.
Q7 a) Determine the natural frequency (rad/s) of the system shown below:
(5)
--1
temy-cmus
R
(1
c
)htcos
M
=X-c
C
)o
O s
Sine
k
cino
m
-
Given that M and mare the mass of pulley and block
respectively. Consider
the radius of pulley to be R.
4
(coso
b) In a damped vibration system, the mass having 20 kg makes 40 0cillations in
25 seconds. The amplitude of vibration decreases to 1/8h of initial value after
(5)
gth oscillation. Determine:
() Logarithmic decrenment
(i)Damping factor and damping coefficient
(ii) Stiffness of spring
Write short notes on any two:
Q8
t
Fluctuation of energy in aflywheel
b) Characteristics of a Governor
c) Direct and reverse crank method
d) Expression for minimum number of teeth
(5x2)
Registration no:
os 4 54
Total Number of Pages: 02
B.Tech.
Subject Code: PEME5303
sth Semester Regular/ Back Paper Examination December 2022
Subject Name: NON-CONVENTIONAL ENERGY SOURCES
Branch: MECHANICAL ENGINEERING
Time: 3 Hours
Max Marks: 60
Question Code:
Answer Question No.1 which is compulsory and any five from the rest.
The figures in the right-hand margin indicate marks.
(1x10)
Answer the following questions:
Q1
a) Define Energy density.
b) What do you mean by an opaque body?
c) Define Irradiance.
Ld) What are the site requirements to construct a tidal power plant?
,er What is Energy chain?
N What is line focus collector and point focus collector?
e) What are the constituents of a biogas?
Lh)
Define beam radiation?
i) What are the different biomass conversion technologies?
i)
Define wave energy.
Q2 alWrite down the difference between conventional and non-conventional
(5)
energy Sources.
Explain the principle of photo-voltaic effect with neat sketch.
(5)
Q3 , a Draw a neat sketch of solar flat plate collector and explain its working
principle.
(5)
b) Explain about different type of radiations between earth and sun with
suitable diagram.
(5)
O4
a) Write down the difference between EBB tidal system and
single
with neat sketch.
tide system
bY Sketch the diagram of HAWT and explain the function of its main
components.
o
al Explain the Salient Features of "Energy
bY Aflat plate collector tilted at an angleConservation Act 2001".
30°, located at latitude
19°07"N and
longitude 72°51'E is pointing due south. Calculate the
angle
made by beam
radiation with normal to the flat plate collector on
1
April
at
10:00 AM(LAT).
Also, calculate LAT
Corresponding to 14:00 PM (IST which is based
on
82050'E.)
(5)
(5)
(5)
(5)
Q6 YWhat is meant by ECOs and ECMS? Explain the different categories of ECOs.
by Determine the %of CO if only 10 moles of O;is present in:
CgHg +10 02...>9H,0+3C0, + 5C0
Q7
Explain about liquid dominated geothermalsystem with neat sketch?
b) Explain about open cycle OTEC with diagram?
Write short notes on any two:
Advanced solar cooker.
b Floating dome biogas plant.
c) Solar Declination Angle.
d) DNI.
(5)
(5)
(5)
(5)
(5x2)
Registration no:
aloo1|1
545 y
B.Tech.
Pages: 03
Total Number of
Subject Code: PCME4308
Semester Regular/ Back Paper Examination December 2022
5'hChioct
Name: MANUFACTURING TECHNOLOGCYII
Branch: MECHANICAL ENGINEERINC
Time: 3 Hours
Max Marks: 60
Question Code:
Answer Ouestion No.1 which is compulsory and any five from the rest
The figures in the right-hand margin indicate marks.
Q1
Answer the following questions:
a) Calculate the power required tor machining of a workpiece on lathe
having efficiency of 85% on full load, when tangential force required is
1200 N and cutting speed 195 m/min.
a. 4.59 kW
b. 275.29 W
c. 3.315 kW
d. insuficient data
b) The angle between side cutting edge and end cutting edge is called as
a. approach angle
b. nose angle
c.side relief angle
d. end relief angle
c) Inchemical machining is material removal takes by?
a) Chemical reaction
b)Erosion
c) Electron removal
d) None of the mentioned
d) Which of the following process comes under mechanical machining?
a) USM
b) EDM
c) LBM
d) PAM
e) The maximum swiveling of the table of universal milling machine is:
(A) 30° on cither side
(B) 30° in one side
(C)45° on cither side
(D) 60° in one side
(1x10)
nSloting can be perlormed more elfectively hy
nilling nachine,
a) horizontal
b)vertical
c)hoth horizontal and vertical
d) nonc of thementioncd
p) For last removal of materials during grinding, a
erimling
whecl is uscd.
(A)Course grained
(B) Finegrained
(C) Medium graincd
(D) None of these
h) Thecutting spccd for drilling aluminium, brass and bronze with carbon
stccl drills is
culting specd lor drilling mild steel with high
spccd stccl drills.
(A) Equal to
(B) Less than
(C) More than
(D) None of these
if the tool
i) In American Standard Association (ASA) system,
rake angle will be
side
nomenclalure is 8-6-5-5-10-15-2 mm, then the
(A) S°
(B)6°
(C)go
(D) 10°
the
i) The angle formcd by the lcading cdge of
land with a plane having the
axis of the drill, is called
(A) Helix or rake angle
(B) Point angle
(C)Chisel edge angle
(D) Lipclearance angle
with various assumptions and
02 a) Explain the merchant forcecircle diagram
ductile alloy by a tool of yo = 10 , it
(5)
in both ASA
6) Explain the various features of single point cutting tool
and ORS system with neat sketch.
(5)
return
Q3 a) Explain, shaper machine & describe slotted crank quick
(5)
.b} Write ashort note on different types of operations that can be performed
(5)
characteristics. During turning a
2.5. Evaluate
and
was found Pz =1000N, Px = 400N, Py =300N machining process.
above
using MCD the values of F. N and u for the
mechanism.
Onan centre lathe.
(5)
hand sketch.
Q4/a) Discuss and differentiate between shaper and plancr with free
(5)
with neat
b) Explain bar feeding meclhanis1m in capstan and turrct lathe
sketch.
Q5
(5)
What is drilling? Explain the construction of avertical drilling machine
with neat sketch.
b) What is grinding operation? Describe the different types of grinding
(5)
machines. Describe the different types of grinding machine.
Q6) What do you mean by indexing in milling machine? Describe Direct
method of indexing.
b) Describe work holding devices with neat diagram for each individual
(5)
(5)
work holding device.
Q7 a) Define grinding. What are the advantages and disadvantages of
(5)
grinding? Discuss in detail, the different grinding specifications related
togrinding wheel and different bonds.
by Is Unconventional machining process an alternate or complement to
(5)
conventional machining process? Justify. What are the basic limitations
of conventional manufacturing process?
Write short notes on any two:
a) Ultrasonic Machining Process with sketch..
Abrasive Jet Machining with sketch.
c) WATER JET MACHINING with sketch.
d)/ Merchant Circle Diagram.
(5x2)
Registration no:
Total Number of Pages: 02
B.Tech.
pages
Subject Code: PCME4301
5thSemester Regular Examination December 2022-23
Subject Name: POWER ENGINEERING
Branch: MECHANICAL ENGINEERING
Time: 3 Hours
Max Marks: 60
Question Code:
Answer Question No.1 which is compulsory and any five from the rest.
The figures in the right hand margin indicate marks.
Answer the following questions:
Q1
(1x10)
a) What are the two general classes of combustion engines and howdo they basically
differ in principle ?
b) What are the assumptions made in air standard cycle ?
c) What is meant by carburetion ?
d) Why air injection system is not used now-a-days ?
e) Define combustion. What are the generalconditions necessary for combustion ?
f) State the assumptions made in an ideal cycle analysis of gas turbines.
g) What do you understand by the term 'air breathing Engines' ?
How are they classified ?
h)
ThermalPower-plant performs on which cycle ?
i) How nuclear reactor are classified ?
i) What is the function of Control rod in nuclear reactor ?
Q2 a)
With a neat sketch, determine the thermal efficiency of Otto Cycle.
b) In an Otto cycle air at 17°C and 1 bar is compressed adiabatically until the pressure is
15 bar. Heat is added at constant volume until the pressure rises to 40 bar. Calculate
(5)
(5)
the air standard efficiency, the compression ratio and the mean effective pressure
for the cycle. Assume Cv =0.717 k/kgK and R=8.314 ki/kmolk
Q3 a) Elaborate the factors affecting the carburetion.
b) With the help of neat sketch, explain the working principle of a simple careburettor.
Q4 a) What is meant by abnormal combustion?
b) Bring out clearly the process of combustion in CI engines and also explain
(3)
(7)
(3)
(7)
the various stages of combustion.
b) Discuss the advantages of electronic ignition system.
(6)
(4)
a) With general layout, explain the working of modern thermal powerplant.
(5)
b) Discuss the factors for selecting site of Thermal power plant.
(5)
as a) With the help of neat sketch, explain battery coil ignition system.
Q/
Q8
a)
What are the different classifications of nuclear
reactor
What are the essential components of nuclear reactor?
D) DISCuss the advantages and disadvantages of Pressurized Water Reactor.
Write short notes on any two:
a) Valve timing diagram of SIand Cl
engine
b)
c)
d)
MPFI System
Ram Jet Engine
Rankine cycle
(5
(5)
(5x2