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 air requirement of a petrol engine during starting compared to theoretical air required for complete combustion is Same Less More May be more or less depending on engine capacity Same Less More May be more or less depending on engine capacity ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The ignition of the charge by some hot surface within the engine before the passage of spark is called Pre-ignition Auto-ignition Detonation Ignition delay Pre-ignition Auto-ignition Detonation Ignition delay ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The fuels in order of decreasing knock tendency for spark ignition engines are Paraffin, aromatic, napthene Napthene, aromatics, paraffin Napthene, paraffin, aromatic Paraffin, napthene, aromatic Paraffin, aromatic, napthene Napthene, aromatics, paraffin Napthene, paraffin, aromatic Paraffin, napthene, aromatic ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines A petrol engine, during suction stroke draws A mixture of petrol and air Air only None of these Petrol only A mixture of petrol and air Air only None of these Petrol only ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The reason for supercharging in any engine is to Effect fuel economy Increase power Reduce weight and bulk for a given output Increase efficiency Effect fuel economy Increase power Reduce weight and bulk for a given output Increase efficiency ANSWER DOWNLOAD EXAMIANS APP
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