In a four stroke cycle petrol engine, the expansion – McqOptions

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1.	In a four stroke cycle petrol engine, the expansion
A.	starts at top dead centre and ends at bottom dead centre
B.	starts at 30° before top dead centre and ends at 50° before bottom dead centre
C.	starts at 30° after top dead centre and ends at 50° after bottom dead centre
D.	may start and end anywhere
Answer» C. starts at 30° after top dead centre and ends at 50° after bottom dead centre

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