S.B. Roll No. _________
AUTOMOBILE
ENGINE-1
4th
Exam/AutoEngg/9307
Duration 3 Hrs.
Note : Attempt any five questions.
Question No.1 compulsory. Draw neat sketches whoever necessary
1.
The working cycle of a four stroke engine is
completed in the following number of revolutions of crankshaft
a.
½
b.
1
c.
2
d.
4
e.
8
2.
In a diesel engine, fuel is ignited by
a.
Spark
b.
Infected fuel
c.
Heat resulting from compressing air that is
supplied for combustion
d.
Ignitor
e.
Combustion chamber
3.
The calorific value of gaseous fuel is expressed
in terms of
a.
K cal
b.
K cal/kg
c.
K cal /m2
d.
K cal/m3
e.
All of the above
4.
An engine indicator is used to determine the
following
a.
Speed
b.
Temperature
c.
Volume of cylinder
d.
M.e.p and I.H.P
e.
BHP
5.
The specific fuel consumption per BHP hour for a
petrol engine is approximately
a.
0.15kg
b.
0.2Kg
c.
0.25kg
d.
0.3kg
e.
035kg
6.
a.
Discuss the various types of cylinder
arrangements available for an automobile
b.
State and explain the importance of engine
location in a vehicle.
c.
Discuss the four strokes of C.I engine.
7.
a.
What do you understand by the terms top and
bottom dead centers, discuss
b.
Discuss ‘Compression Ratio’ of a diesel engine.
8.
Discuss AC mechanical and electrical fuel pumps
of an engine.
9.
a.
Discuss the requirements of air fuel rations
under the various load conditions of a petrol engine.
b.
What is
the role of a governor?
10.
Draw a
schematic sketch of cooling system of a diesel engine and name its components.
11.
a.
Name the various lubrication systems of a petrol
vehicle and discuss any one.
What are the various requirements of the engine lubricating oils?
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