Internal Combustion Engines The mechanical efficiency (ηm) of the engine is given by None of these ηm = B.P/I.P ηm = I.P/B.P ηm = (B.P × I.P)/100 None of these ηm = B.P/I.P ηm = I.P/B.P ηm = (B.P × I.P)/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 Equal to stroke volume and clearance volume More than stroke volume Less than stroke volume Equal to stroke volume Equal to stroke volume and clearance volume More than stroke volume Less than stroke volume ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines In a four stroke cycle petrol engine, the compression Starts at 40° before bottom dead centre and ends at 30° after bottom dead centre May start and end anywhere Starts at bottom dead centre and ends at top dead centre Starts at 40° after bottom dead centre and ends at 30° before top dead centre Starts at 40° before bottom dead centre and ends at 30° after bottom dead centre May start and end anywhere Starts at bottom dead centre and ends at top dead centre Starts at 40° after bottom dead centre and ends at 30° before top dead centre ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The pressure at the end of compression, in diesel engines, is approximately 20 bar 35 bar 10 bar 25 bar 20 bar 35 bar 10 bar 25 bar ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines A higher compression ratio causes Increase in detonation Acceleration in the rate of combustion Pre-ignition Any one of these Increase in detonation Acceleration in the rate of combustion Pre-ignition Any one of these ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The process of breaking up or a liquid into fine droplets by spraying is called Atomization Carburetion Vaporisation Ionization Atomization Carburetion Vaporisation Ionization ANSWER DOWNLOAD EXAMIANS APP
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