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Internal Combustion Engines

Internal Combustion Engines
In petrol engine, using a fixed octane rating fuel and fixed compression ratio, supercharging will _________ the knocking tendency.

Not effected
Increase
Decrease
None of these

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Internal Combustion Engines
The calorific value of gaseous fuels is expressed in terms of

kcal
kcal/kg
kcal/m²
kcal/m3

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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.

Below
None of these
Equal to
Above

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Internal Combustion Engines
A heat engine utilizes the

High heat value of oil
Mean heat value of oil
Calorific value of oil
Low heat value of

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Internal Combustion Engines
The reason for supercharging in any engine is to

Reduce weight and bulk for a given output
Increase power
Effect fuel economy
Increase efficiency

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Internal Combustion Engines
The pressure at the end of compression, in diesel engines, is approximately

35 bar
20 bar
25 bar
10 bar

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