Mechanical Engineering - IC Engines and Nuclear Power Plants

41. 

Morse test can be conducted for

A. petrol engines
B. diesel engines
C. multi-cylinder engines
D. all of these

Answer: Option C

Explanation:

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42. 

The basic requirement of a good combustion chamber is

A. minimum turbulence
B. low compression ratio
C. high thermal efficiency and power output
D. low volumetric efficiency

Answer: Option C

Explanation:

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43. 

In a four stroke cycle petrol engine, the charge is compressed when both the valves (i.e. inlet valve and exit valve) are closed,

A. Agree
B. Disagree

Answer: Option A

Explanation:

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44. 

The thermal efficiency of diesel engines on weak mixtures is

A. unaffected
B. lower
C. higher
D. dependent on other factors

Answer: Option C

Explanation:

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45. 

The injection pressure in a diesel engine is about

A. 10 bar
B. 100 bar
C. 150 bar
D. 500 bar

Answer: Option B

Explanation:

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