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Internal Combustion Engines

Internal Combustion Engines
Iso-octane (C₈H₁₈) has octane number of

120
50
0
100

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Internal Combustion Engines
The increase of cooling water temperature in petrol engine will _________ the knocking tendency.

None of these
Increase
Not effect
Decrease

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Internal Combustion Engines
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
None of these

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Internal Combustion Engines
In a petrol engine, the fuel supplied to the engine cylinder is mixed with required quantity of air and the mixture is ignited with a

Fuel pump
Spark plug
None of these
Fuel injector

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Internal Combustion Engines
The specific fuel consumption per BH hour for a petrol engine is approximately

0.25 kg
0.15 kg
0.3 kg
0.2 kg

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Internal Combustion Engines
The self ignition temperature of petrol is _________ as compared to diesel oil.

None of these
Same
Higher
Lower

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