1.

In a four stroke cycle petrol engine, the inlet valve

A. opens at top dead centre and closes at bottom dead centre
B. opens at 20° before top dead centre and closes at 40° after bottom dead centre
C. opens at 20° after top dead centre and closes at 20° before bottom dead centre id may open or close anywhere
D. none of the mentioned
Answer» C. opens at 20¬¨¬®‚Äö√†√ª after top dead centre and closes at 20¬¨¬®‚Äö√†√ª before bottom dead centre id may open or close anywhere


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