In a four stroke cycle petrol engine, the expansion

Question: 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: Option B

Explanation:

No answer description available for this question.