Mechanical Engineering - IC Engines and Nuclear Power Plants

16.
In a four stroke cycle petrol engine, the pressure inside the engine cylinder during the suction stroke is __________ the atmospheric pressure.
equal to
below
above
Answer: Option
Explanation:
No answer description is available. Let's discuss.

17.
A diesel engine is __________ as compared to petrol engine, both running at rated load.
equally efficient
less efficient
more efficient
Answer: Option
Explanation:
No answer description is available. Let's discuss.

18.
Which one of the following event would reduce volumetric efficiency of a vertical compression ignition engine ?
inlet valve closing after bottom dead centre
inlet valve closing before bottom dead centre
inlet valve opening before top dead centre
exhaust valve closing after top dead centre
Answer: Option
Explanation:
No answer description is available. Let's discuss.

19.
The pressure at the end of compression, in petrol engines, is approximately
10 bar
20 bar
25 bar
35 bar
Answer: Option
Explanation:
No answer description is available. Let's discuss.

20.
The sparking in a petrol engine increases pressure and temperature of the products of combustion, but the volume remains constant.
Yes
No
Answer: Option
Explanation:
No answer description is available. Let's discuss.