Internal Combustion Engines
The ratio of the work obtained at the crankshaft in a given time to the energy supplied during the same time is called

Mechanical efficiency
Indicated thermal efficiency
Overall efficiency
Volumetric efficiency

ANSWER DOWNLOAD EXAMIANS APP

Internal Combustion Engines
In a four stroke cycle petrol engine, the inlet valve

Opens at 20° before top dead center and closes at 40° after bottom dead center
Opens at top dead center and closes at bottom dead center
May open or close anywhere
Opens at 20° after top dead center and closes at 20° before bottom dead center

ANSWER DOWNLOAD EXAMIANS APP