Internal Combustion Engines The mechanical efficiency (ηm) of the engine is given by ηm = (B.P × I.P)/100 ηm = B.P/I.P ηm = I.P/B.P None of these ηm = (B.P × I.P)/100 ηm = B.P/I.P ηm = I.P/B.P None of these ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The knocking tendency in spark ignition engines may be decreased by Controlling the air-fuel mixture Reducing the compression ratio Controlling the ignition timing Controlling the exhaust temperature Controlling the air-fuel mixture Reducing the compression ratio Controlling the ignition timing Controlling the exhaust temperature ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The specific fuel consumption per B.P. hour for a petrol engine is about 0.3 kg 0.2 kg 0.25 kg 0.35 kg 0.3 kg 0.2 kg 0.25 kg 0.35 kg ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The expansion of fuel in a four stroke cycle diesel engine Starts at 15° before top dead center and ends at 30° after top dead center Starts at 15° after top dead center and ends at 30° before bottom dead center May start and end anywhere Starts at top dead center and ends at 30° after top dead center Starts at 15° before top dead center and ends at 30° after top dead center Starts at 15° after top dead center and ends at 30° before bottom dead center May start and end anywhere Starts at top dead center and ends at 30° after top dead center ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The pressure at the end of compression in the case of diesel engine is of the order of 6 kg/cm 12 kg/cm 35 kg/cm 20 kg/cm 6 kg/cm 12 kg/cm 35 kg/cm 20 kg/cm ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The air-fuel ratio in petrol engines is controlled by Injection Carburetion Controlling valve opening/closing Governing Injection Carburetion Controlling valve opening/closing Governing ANSWER DOWNLOAD EXAMIANS APP
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