A four cylinde si engine develops 100 kw running at a constant speed . When eginition of each cylinder is cut-off successively at the same speed , the BP is 71, 70, 71, 72 KW. The FP of engine and mechanical efficiency are

A four cylinde si engine develops 100 kw running at a constant speed .

1.	A four cylinde si engine develops 100 kw running at a constant speed . When eginition of each cylinder is cut-off successively at the same speed , the BP is 71, 70, 71, 72 KW. The FP of engine and mechanical efficiency are
A.	116kw, 51.3%
B.	16kw, 86.2%
C.	29kw, 77.5%
D.	none of the above
Answer» C. 29kw, 77.5%