For cruising condition in automotive engines, the air-fuel mixture must be
A. lean
B. rich
C. chemically balanced
D. none of the mentioned
Answer:A
For cruising condition in automotive engines, the air-fuel mixture must be
A. lean B. rich C. chemically balanced D. none of the mentioned
Explanation: For cruising condition in automotive engines, the air-fuel mixture must be a lean mixture and for idling condition in automotive engines, the air-fuel mixture must be a rich mixture.