In a

Question

In a four stroke cycle petrol engine, the inlet valve

Options:

A . opens at top dead centre and closes at bottom dead centre

B . opens at `20^circ` before top dead centre and closes at `40^circ`after bottom dead centre

C . opens at `20^circ` after top dead centre and closes at `20^circ` before bottom dead centre id) may open or close anywhere

Answer: Option B

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