In a four stroke cycle petrol engine, the inlet valve
A. Opens at top dead center and closes at bottom dead center
B. Opens at 20° before top dead center and closes at 40° after bottom dead center
C. Opens at 20° after top dead center and closes at 20° before bottom dead center
D. May open or close anywhere
Answer: Option B
Solution(By Examveda Team)
In a four stroke cycle petrol engine, the inlet valve Opens at 20° before top dead center and closes at 40° after bottom dead centerEngine pistons are usually made of aluminium alloy because it
A. Is lighter
B. Wear is less
C. Absorbs shocks
D. Is stronger
The reason for supercharging in any engine is to
A. Increase efficiency
B. Increase power
C. Reduce weight and bulk for a given output
D. Effect fuel economy
Morse test can be conducted for
A. Petrol engines
B. Diesel engines
C. Multi cylinder engines
D. All of these
The cetane (C16H34) which is a straight chain paraffin, is assigned a cetane number of
A. 0
B. 50
C. 100
D. 120
Join The Discussion