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INTERNAL COMBUSTION ENGINES

Internal Combustion Engines
In the crankcase method of scavenging, the air pressure is produced by

Centrifugal pump
Natural aspirator
Supercharger
Movement of engine piston

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Internal Combustion Engines
In a four stroke cycle petrol engine, the charge is ignited at

30° after bottom dead center
30° before bottom dead center
30° after top dead center
30° before top dead center

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Internal Combustion Engines
It the temperature of intake air in IC engines is lowered, then its efficiency will

Increase
Decrease
Increase up to certain limit and then decrease
Remain same

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Internal Combustion Engines
If the temperature of intake air in internal combustion engine increases, then its efficiency will

Remain same
Increase
Decrease
None of the listed here

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Internal Combustion Engines
The pressure at the end of compression in the case of diesel engine is of the order of

20 kg/cm
12 kg/cm
35 kg/cm
6 kg/cm

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