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Internal Combustion Engines

Internal Combustion Engines
The loud pulsating noise heard within the cylinder of an internal combustion engine is known as

Supercharging
Turbulence
Pre-ignition
Detonation

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Internal Combustion Engines
Which of the following medium is compressed in a Diesel engine cylinder?

Air and lub oil
Air alone
Fuel alone
Air and fuel

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Internal Combustion Engines
The maximum propulsive efficiency of a turbojet engine is at a speed of

2000 km/h
2400 km/h
1000 km/h
3000 km/h

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Internal Combustion Engines
If petrol is used in a diesel engine, then

Higher knocking will occur
Low power will be produced
Efficiency will be low
Black smoke will be produced

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Internal Combustion Engines
The thermal efficiency of petrol and gas engines is about

0.3
0.15
0.7
0.5

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Internal Combustion Engines
Air fuel ratio for idling speed of a petrol engine is approximately

0.20902777777778
0.042361111111111
0.41736111111111
0.62569444444444

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