Automobile Engineering in ME
The most accurate ignition system of a spark ignition engine is

Battery system
Magneto and electronic system
Electronic control unit system
Magneto system

ANSWER DOWNLOAD EXAMIANS APP

Automobile Engineering in ME
It is necessary to maintain the valve clearances as they

Allow for lengthening of the valves owing to the heat of combustion
Reduce the resistance to sliding that occurs between the cam and the tappet
Make the crankshaft turn smoothly
Increase the speed at which the valves move up and down

ANSWER DOWNLOAD EXAMIANS APP