Internal Combustion Engines
Detonation is harmful due to

None of these
High intensity of knock causes crankshaft vibration and the engine runs rough
Increase in the rate of heat transfer, there is a reduction in the power output and efficiency of the engine
Excessive turbulence which removes most of the insulating gas boundary layer from the cylinder walls

ANSWER DOWNLOAD EXAMIANS APP

Internal Combustion Engines
As compared to air standard cycle, in actual working, the effect of variation in specific heats is to

Increase maximum pressure and maximum temperature
Decrease maximum pressure and increase maximum temperature
Reduce maximum pressure and maximum temperature
Increase maximum pressure and decrease maximum temperature

ANSWER DOWNLOAD EXAMIANS APP