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Internal Combustion Engines

Internal Combustion Engines
The magneto in an automobile is basically

Transformer
Magnetic circuit
Capacitor
D.C. generator

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Internal Combustion Engines
A petrol engine, during suction stroke draws

A mixture of petrol and air
Air only
None of these
Petrol only

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Internal Combustion Engines
The minimum cranking speed in case of petrol engine is about

60 - 80 rpm
Half the operating speed
250 - 300 rpm
One fourth of operating speed

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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

0.75069444444444
0.62569444444444
0.37569444444444
0.50069444444444

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Internal Combustion Engines
The thermal efficiency of a petrol engine is _________ as compared to diesel engine.

None of these
Same
More
Less

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Internal Combustion Engines
Supercharging is the process of supplying the intake air to the engine cylinder at a density ___ the density of the surrounding atmosphere.

None of the listed here
Greater than
Less than
Equal to

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