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1. |
In a four stroke S.I engine the exhaust valve usually open? |
A. | At BDC |
B. | 35 degree to 60 degree before BDC |
C. | 35 degree to 60 degree after BDC |
D. | 10 degree to 20 degree before BDC |
Answer» C. 35 degree to 60 degree after BDC | |