The exhaust valve in a four stroke cycle petrol engine – McqOptions

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1.	The exhaust valve in a four stroke cycle petrol engine
A.	opens at 50° before bottom dead centre and closes at 15° after top dead centre
B.	opens at bottom dead centre and closes at top dead centre
C.	opens at 50° after bottom dead centre and closes at 15° before top dead centre
D.	may open and close anywhere
Answer» B. opens at bottom dead centre and closes at top dead centre

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