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Question: In a four stroke cycle diesel engine, the exhaust valve
[A].

opens at 30° before bottom dead cnetre and closes at 10° after top dead centre

[B].

opens at 30° after bottom dead centre and closes at 10° before top dead centre

[C].

opens at bottom dead centre and closes at top dead centre

[D].

may open and close anywhere

Answer: Option A

Explanation:

No answer description available for this question.

Question: For the same maximum pressure and heat input, the exhaust temperature of petrol engine is __________ than that of diesel engine.
[A].

less

[B].

more

Answer: Option B

Explanation:

No answer description available for this question.

Question: In compression ignition engines, swirl denotes a
[A].

haphazard motion of the gases in the chamber

[B].

rotary motion of the gases in the chamber

[C].

radial motion of the gases in the chamber

[D].

none of the above

Answer: Option B

Explanation:

No answer description available for this question.

Question: A diesel engine has inlet valve, fuel injection valve and exhaust valve.
[A].

Yes

[B].

No

Answer: Option A

Explanation:

No answer description available for this question.

Question: In a four stroke cycle diesel engine, the compression
[A].

starts at 40° after bottom dead centre and ends at 10° before top dead centre

[B].

starts at 40° before top dead centre and ends at 40° after top dead centre

[C].

starts at top dead centre and ends at 40° before bottom dead centre

[D].

may start and end anywhere

Answer: Option A

Explanation:

No answer description available for this question.

Question: In a four stroke cycle diesel engine, the inlet valve
[A].

opens at 20° before top dead centre and closes at 40° after bottom dead centre

[B].

opens at 20° after top dead centre and closes at 20° before bottom dead centre

[C].

opens at top dead centre and closes at bottom dead centre

[D].

may open and close anywhere

Answer: Option A

Explanation:

No answer description available for this question.

Question: A diesel engine has
[A].

one valve

[B].

two valves

[C].

three valves

[D].

four valves

Answer: Option C

Explanation:

No answer description available for this question.

Question: In diesel engines, the ignition takes place due to the heat produced in the engine cylinder at the end of compression.
[A].

Correct

[B].

Incorrect

Answer: Option A

Explanation:

No answer description available for this question.

Question: In a petrol engine, if diesel is used, then the engine will
[A].

not run

[B].

run more efficiently

[C].

run at high speed

[D].

explode

Answer: Option A

Explanation:

No answer description available for this question.

Question: In a petrol engine, the mixture has the lowest pressure at the
[A].

beginning of suction stroke

[B].

end of suction stroke

[C].

end of compression stroke

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.