Roll No. ......................
Total No. of Questions : 09]
B.Tech. (Sem. –
4th)
INTERNAL
COMBUSTION ENGINES
SUBJECT CODE : BTAE
- 401
Paper ID : [A1161]
Time : 03 Hours
Instruction to Candidates:
1. SECTION-A is COMPULSORY
consisting of TEN questions carrying
TWO marks each.
2. SECTION-B contains FIVE
questions carrying FIVE marks each and
students has to attempt any FOUR
questions.
3. SECTION-C contains THREE
questions carrying TEN marks each and
students has to attempt any TWO
questions.
SECTION-A
l. Answer briefly :
a) What is a thermodynamic cycle?
b) Define mean effective pressure.
c) What is meant by delay period?
d) What is direct injection?
e) What is the effect of engine
speed on friction?
f) How engines are air cooled?
g) What is the function of a
supercharger?
h) What is the use of air cleaner
in an automotive engine?
i) What is the function of
vibration damper?
j) What is a heat balance sheet for
an engine?
SECTION-B
2. Differentiate between a two stroke and a four stroke
engine.
3. Discuss various theories of detonation.
4. Discuss the advantages of the design of ‘M’ combustion
chamber.
5. Sketch any fuel injector for a diesel engine and explain
its working.
6. Explain turbo-charging and discuss its limitations.
SECTION-C
7. Describe different types of valve actuating mechanism for
automotive
engines with the help of a
sketch.
8. With the help of a neat sketch explain the construction
and working of
A.C. mechanical fuel pump.
9. Discuss the pump circulation cooling system with a sketch.
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