Internal Combustion Engines The air standard efficiency of an I.C. engine is given by (where r = Compression ratio, and γ = Ratio of specific heats) 1 - (1/rγ - 1) 1 + rγ - 1 None of these 1 - rγ - 1 1 - (1/rγ - 1) 1 + rγ - 1 None of these 1 - rγ - 1 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The thermal efficiency of diesel engines on weak mixtures is Lower Dependent on other factors Higher Unaffected Lower Dependent on other factors Higher Unaffected ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The higher combustion chamber wall temperature in compression ignition engines will _________ knocking tendency. Reduce None of these Increase Not effect Reduce None of these Increase Not effect ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The ratio of the brake power to the indicated power is called Volumetric efficiency Indicated thermal efficiency Mechanical efficiency Overall efficiency Volumetric efficiency Indicated thermal efficiency Mechanical efficiency Overall efficiency ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines A spark plug gap is kept from 0.3 to 0.7 mm 0.6 to 1.0 mm 0.4 to 0.9 mm 0.2 to 0.8 mm 0.3 to 0.7 mm 0.6 to 1.0 mm 0.4 to 0.9 mm 0.2 to 0.8 mm ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Which of the following does not relate to a spark ignition engine? Fuel injector Spark plug Ignition coil Carburettor Fuel injector Spark plug Ignition coil Carburettor ANSWER DOWNLOAD EXAMIANS APP
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