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 - rγ - 1 1 + rγ - 1 1 - (1/rγ - 1) None of these 1 - rγ - 1 1 + rγ - 1 1 - (1/rγ - 1) None of these ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines In a four stroke cycle petrol engine, the charge is ignited at 30° after top dead center 30° after bottom dead center 30° before top dead center 30° before bottom dead center 30° after top dead center 30° after bottom dead center 30° before top dead center 30° before bottom dead center ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines In a four stroke cycle petrol engine, the expansion Starts at top dead center and ends at bottom dead center Starts at 30° after top dead center and ends at 50° after bottom dead center May start and end anywhere Starts at 30° before top dead center and ends at 50° before bottom dead center Starts at top dead center and ends at bottom dead center Starts at 30° after top dead center and ends at 50° after bottom dead center May start and end anywhere Starts at 30° before top dead center and ends at 50° before bottom dead center ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The volumetric efficiency of a well designed engine may be 75 to 90% 30 to 40% 40 to 60% 60 to 70% 75 to 90% 30 to 40% 40 to 60% 60 to 70% ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines In diesel engine the diesel fuel injected into cylinder would burn instantly at about compressed air temperature of 250°C 500°C 2000°C 1000°C 250°C 500°C 2000°C 1000°C ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The fuel air ratio in a petrol engine fitted with suction carburettor, operating with dirty air filter as compared to clean filter will be Remain unaffected None of the listed here Higher Lower Remain unaffected None of the listed here Higher Lower ANSWER DOWNLOAD EXAMIANS APP
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