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Internal Combustion Engines

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

0.7
0.5
0.3
0.15

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Internal Combustion Engines
The fuel air ratio in a petrol engine fitted with suction carburettor, operating with dirty air filter as compared to clean filter will be

None of the listed here
Lower
Higher
Remain unaffected

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Internal Combustion Engines
The knocking tendency in spark ignition engines may be decreased by

Controlling the exhaust temperature
Reducing the compression ratio
Controlling the ignition timing
Controlling the air-fuel mixture

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

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

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Internal Combustion Engines
The power actually developed by the engine cylinder of an I.C. engine is known as

None of the listed here
Actual power
Theoretical power
Indicated power

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Internal Combustion Engines
The following volume of air is required for consuming 1 liter of fuel by a four stroke engine

56 m3
1 m3
910 m3
5 m3

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