Compression ratio of an I.C. engine is the ratio of the

1.	Compression ratio of an I.C. engine is the ratio of the
A.	clearance volume to the volume swept by piston per stroke.
B.	volume of air in cylinder before compression to that after compression.
C.	pressure after compression to that before compression.
D.	none of these
Answer» C. pressure after compression to that before compression.

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Compression ratio of an I.C. engine is the ratio of the

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