Internal Combustion Engines In petrol engine, using a fixed octane rating fuel and fixed compression ratio, supercharging will _________ the knocking tendency. Increase None of these Decrease Not effected Increase None of these Decrease Not effected ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The compensating jet in a carburettor supplies almost constant amount of petrol at all speeds because the The flow from the main jet is diverted to the compensating jet with increase in speed The diameter of the jet is constant and the discharge coefficient is invariant Flow is produced due to the static head in the float chamber Jet area is automatically varied depending on the suction The flow from the main jet is diverted to the compensating jet with increase in speed The diameter of the jet is constant and the discharge coefficient is invariant Flow is produced due to the static head in the float chamber Jet area is automatically varied depending on the suction ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines In a four stroke cycle petrol engine, the inlet valve Opens at 20° after top dead center and closes at 20° before bottom dead center Opens at top dead center and closes at bottom dead center Opens at 20° before top dead center and closes at 40° after bottom dead center May open or close anywhere Opens at 20° after top dead center and closes at 20° before bottom dead center Opens at top dead center and closes at bottom dead center Opens at 20° before top dead center and closes at 40° after bottom dead center May open or close anywhere ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Fuel consumption of diesel engines is not guaranteed at one quarter load because at such low loads The friction is high The small difference in cooling water temperature or in internal friction has a disproportionate effect The friction is unpredictable The engine is rarely operated The friction is high The small difference in cooling water temperature or in internal friction has a disproportionate effect The friction is unpredictable The engine is rarely operated ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The scavenging efficiency of a four stroke cycle diesel engine is Between 50 and 85% Below 50% Between 85 and 95% Between 95 and 100% Between 50 and 85% Below 50% Between 85 and 95% Between 95 and 100% ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The actual volume of fresh charge admitted in 4-stroke petrol engine is Equal to stroke volume and clearance volume Equal to stroke volume More than stroke volume Less than stroke volume Equal to stroke volume and clearance volume Equal to stroke volume More than stroke volume Less than stroke volume ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS