1(a) List the advantages of
diaphragm clutch. (4 Marks)
(b) Describe the constant mesh
gear box with the help of a sketch. (6 Marks)
(c) Write notes on two yoke
universal joint and axle noise. (6 Marks)
(d) Specify two types of damage
to tyres. Give their remedies. (4 Marks)
2(a) Explain the method of
bleeding hydraulic system. (6 Marks)
(b) Explain the functions of
unloader valve and torsion bar. (6 Marks)
(c) State how the leaf spring is
maintained. (4 Marks)
(d) Give the reason for the front
wheels having toe-out on turns. (4 Marks)
3(a) Describe the working of
double overhead camshaft engine with neat figures. (8 Marks)
(b) Describe any two troubles of
piston rings and suggest remedies. (4 Marks)
(c) How is the S.U. electric pump
maintained? (4 Marks)
(d) Explain the operation of a
mechanical petrol pump. (4 Marks)
4(a) What is the purpose of the
venture tube in a carburetor? (4 Marks)
(b) Describe the construction of the H-type
S.U.carburettor. (6 Marks)
(c) What are the materials used
in bearing alloys? (4 Marks)
(d) Describe the working of a
turbo-charger with the help of a diagram. (6 Marks)
5(a) Explain the terms,
‘resistance of foaming’ and ‘ant-freeze solution’. (6 Marks)
(b) Draw the various types of
open combustion chambers. Explain the cetane number of the diesel fuel. (6 Marks)
(c) Write notes on ‘internal cam
ring’ and ‘engine tuning’. (4 Marks)
(d) How is the pneumatic governor
maintained? (4 Marks)
6(a) Compare lead-acid batteries
with alkaline batteries. (6 Marks)
(b) What are the advantages of the alternator
over the dynamo? (4 Marks)
(c) Explain how ignition timing
is adjusted in the engine. (4 Marks)
(d) Explain the advantages of the
electronic ignition system as compared to the contact breaker point ignition
system. (6 Marks)
7(a) How is the Bendix pinion
device helpful in a starter? (4 Marks)
(b) Describe the function of the
head lamp double filament. (4 Marks)
(c) Describe the operation of an
evaporator used in car air-conditioning. (4 Marks)
(d) Name a few safety devices
used in automotive air-conditioners. Explain any two devices using sketch. (8
Marks)
8 (a) What are the alternate
fuels for automobile engines? Describe their characteristics. (6 Marks)
(b) Describe how compressed gas
cylinders are stored and handled? (6 Marks)
(c) Describe the use of a
universal extractor tool with the help of a diagram. (4 Marks)
(d) Discuss about the limits of
speed for different types of motor vehicles. (4 Marks)
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