Internal Combustion Engines A stoichiometric air-fuel ratio is Lean mixture Chemically correct mixture Rich mixture for idling Rich mixture for over loads Lean mixture Chemically correct mixture Rich mixture for idling Rich mixture for over loads ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The fuel valve in a four stroke cycle diesel engine Opens at 15° before top dead center and closes at 20° after top dead center May open and close anywhere Opens at 15° 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 15° before top dead center and closes at 20° after top dead center May open and close anywhere Opens at 15° after top dead center and closes at 20° before bottom dead center Opens at top dead center and closes at bottom dead center ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The scavenging efficiency of a four stroke cycle diesel engine is Below 50% Between 85 and 95% Between 50 and 85% Between 95 and 100% Below 50% Between 85 and 95% Between 50 and 85% Between 95 and 100% ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The ignition quality of petrol is expressed by Calorific value Cetane number All of these Octane number Calorific value Cetane number All of these Octane number ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The maximum propulsive efficiency of a turbojet engine is at a speed of 1000 km/h 3000 km/h 2400 km/h 2000 km/h 1000 km/h 3000 km/h 2400 km/h 2000 km/h ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Detonation is harmful due to Increase in the rate of heat transfer, there is a reduction in the power output and efficiency of the engine None of these Excessive turbulence which removes most of the insulating gas boundary layer from the cylinder walls 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 None of these Excessive turbulence which removes most of the insulating gas boundary layer from the cylinder walls High intensity of knock causes crankshaft vibration and the engine runs rough ANSWER DOWNLOAD EXAMIANS APP
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