S.B. Roll No. _________
AUTOMOBILE
ENGINE-1
4th
Exam/AutoEngg/9307/Mey’09
Duration 3 Hrs.
Note : Attempt any five questions
1.
a.
Is there any advantage in using glycerin over
water as coolant?
b.
Explain the term ‘flash point’ and fire point’
of a lubricant.
2.
How will you test the condenser of ignition
system?
a.
What are the requirements of good contact breaker point?
b.
Explain the term reach of spark plug.
3.
a.
What are the merits and demerits of detachable
and integrant types of cylinder heads?
b.
How the spark plugs are specified?
c.
Explain the term ‘octane number’?
4.
a.
Explain crank case ventilation?
b.
Write short note on b-metal piston?
c.
Name various types of ring end gaps. Write one
advantages of each.
5.
a.
Explain the term mean effective pressure and
specific fuel consumption.
b.
What are the advantages of E-head valve
mechanism?
c.
What is the function of thrust bearing on a
crankshaft.
6.
a.
What is function of main journal?
b.
Explain the term ‘pour point’
c.
Explain the various mechanical factor affecting
knocking?
7.
a.
How will you recognize mixture strength (rich or
weak)?
b.
What are advantages of petrol injection.
c.
What happens if choke valve is left closed after
the engine is started?
8.
a.
Explain delay nozzle and pint ax1 nozzle used in
fuel pump injector.
b.
What are the limitations of simple carburetor.
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North India Campus