Mechanical Engineering - IC Engines and Nuclear Power Plants

31. 

A diesel engine has

A. one valve
B. two valves
C. three valves
D. four valves

Answer: Option C

Explanation:

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32. 

The self ignition temperature of petrol is __________ as compared to diesel oil.

A. same
B. lower
C. higher

Answer: Option C

Explanation:

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33. 

The pressure inside the cylinder is __________ the atmospheric pressure during the exhaust stroke.

A. equal to
B. below
C. above

Answer: Option C

Explanation:

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34. 

The increase of cooling water temperature in petrol engine will __________ the knocking tendency.

A. not effect
B. decrease
C. increase

Answer: Option C

Explanation:

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35. 

A carburettor is used to supply

A. petrol, air and lubricating oil
B. air and diesel
C. petrol and lubricating oil
D. petrol and air

Answer: Option D

Explanation:

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