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Molecular Mass

The compressi...

Question

The compression ratio of air is to fuel in a petrol engine varies from 4:1 to 10:1.

A

True

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B

False

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Solution

The correct option is A True
True.
It is the ratio of the volume above the piston when it is at the bottom-most position to the volume above the piston when it is at the topmost position. The compression ratio indicates the extent to which the air-fuel mixture is compressed in the engine. The compression ratio of air is to fuel in the diesel engine is 14:1 to 25:1, as compared to petrol engine ratio of 4:1 to 10:1.

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