For the best utilization of fuel, in the engine cylinder, the air supp

1.	For the best utilization of fuel, in the engine cylinder, the air supply should be
A.	About 10% surplus
B.	15 to 20 percent deficient
C.	About 25% surplus
D.	5 to 10 percent deficient
E.	Chemically correct
Answer» B. 15 to 20 percent deficient

Discussion