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1. |
In a four stroke cycle petrol engine, the inlet valve$? |
A. | Opens at top dead center and closes at bottom dead center |
B. | Opens at 20° before top dead center and closes at 40° after bottom dead center |
C. | Opens at 20° after top dead center and closes at 20° before bottom dead center |
D. | May open or close anywhere |
Answer» C. Opens at 20¬¨‚àû after top dead center and closes at 20¬¨‚àû before bottom dead center | |