Q:
The exhaust valve in a four stroke cycle petrol engine __________
Answer & Explanation
Answer: A) opens at 50º before bottom dead center and closes at 15º after top dead center
Explanation: The exhaust valve in a four stroke cycle petrol engine opens at 50º before bottom dead center and closes at 15º after top dead center while the inlet valve, opens at 20º before top dead center and closes at 40º after bottom dead center.
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