Internal Combustion Engines The thermal efficiency of a petrol engine is _________ as compared to diesel engine. Same More None of these Less Same More None of these Less ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The knocking tendency in spark ignition engines may be decreased by Reducing the compression ratio Controlling the exhaust temperature Controlling the ignition timing Controlling the air-fuel mixture Reducing the compression ratio Controlling the exhaust temperature Controlling the ignition timing Controlling the air-fuel mixture ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines In a typical medium speed 4-stroke cycle diesel engine the inlet valve Opens at 20° before top dead center and closes at 35° after the bottom dead center Opens at 10° after top dead center and closes 20° before the bottom dead center Opens at top dead center and closes at bottom dead center May open or close anywhere Opens at 20° before top dead center and closes at 35° after the bottom dead center Opens at 10° after top dead center and closes 20° before the bottom dead center Opens at top dead center and closes at bottom dead center May open or close anywhere ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The object of providing masked inlet valve in the air passage of compression ignition engines is to Enhance flow rate Induce secondary turbulence Control air flow Induce primary swirl Enhance flow rate Induce secondary turbulence Control air flow Induce primary swirl ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The mechanical efficiency (ηm) of the engine is given by ηm = B.P/I.P None of the listed here ηm = I.P/B.P ηm = (B.P × I.P)/100 ηm = B.P/I.P None of the listed here ηm = I.P/B.P ηm = (B.P × I.P)/100 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The ratio of the indicated thermal efficiency to the air standard efficiency is known as Overall efficiency Volumetric efficiency Relative efficiency Mechanical efficiency Overall efficiency Volumetric efficiency Relative efficiency Mechanical efficiency ANSWER DOWNLOAD EXAMIANS APP
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