Internal Combustion Engines The scavenging efficiency of a four stroke cycle diesel engine is Between 85 and 95% Between 95 and 100% Below 50% Between 50 and 85% Between 85 and 95% Between 95 and 100% Below 50% Between 50 and 85% ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines During idling, a petrol engine requires _________ mixture. Chemically correct Lean Rich None of these Chemically correct Lean Rich None of these ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The minimum cranking speed in case of petrol engine is about 60 - 80 rpm 250 - 300 rpm One fourth of operating speed Half the operating speed 60 - 80 rpm 250 - 300 rpm One fourth of operating speed Half the operating speed ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines In the crankcase method of scavenging, the air pressure is produced by Centrifugal pump Natural aspirator Supercharger Movement of engine piston Centrifugal pump Natural aspirator Supercharger Movement of engine piston ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The fuel valve in a four stroke cycle diesel engine 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 Opens at 15° after top dead center and closes at 20° before bottom dead center May open and close anywhere 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 Opens at 15° after top dead center and closes at 20° before bottom dead center May open and close anywhere ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The basic requirement of a good combustion chamber is Minimum turbulence Low compression ratio Low volumetric efficiency High thermal efficiency and power output Minimum turbulence Low compression ratio Low volumetric efficiency High thermal efficiency and power output ANSWER DOWNLOAD EXAMIANS APP
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