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Internal Combustion Engines

Internal Combustion Engines
In diesel engine, the compression ratio in comparison to expansion ratio is

Variable
Same
Less
More

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

None of these
Increase
Not effected
Decrease

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Internal Combustion Engines
The operation of forcing additional air under pressure into the engine cylinder is known as

Supercharging
Carburetion
Turbulence
Delay period

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Internal Combustion Engines
The mechanical efficiency (ηm) of the engine is given by

None of these
ηm = I.P/B.P
ηm = (B.P × I.P)/100
ηm = B.P/I.P

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Internal Combustion Engines
For maximum power generation, the air fuel ratio for a petrol engine for vehicles, is of the order of

0.50069444444444
0.62569444444444
0.75069444444444
0.37569444444444

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Internal Combustion Engines
In a diesel engine, the duration between the time of injection and ignition, is known as

Delay period
Pre-ignition period
Period of ignition
Burning period

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MORE MCQ ON Internal Combustion Engines

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