Q.

Start of second phase in the combustion of SI engine is indicated by

A. separation of velocity line from compression line on p-Ө diagram.
B. constant pressure on p-Ө diagram.
C. fall of pressure p-Ө diagram.
D. separation of combustion curve from motoring curve on p-Ө diagram.
Answer» D. separation of combustion curve from motoring curve on p-Ө diagram.
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