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 1 - rγ - 1 None of these 1 - (1/rγ - 1) 1 + rγ - 1 1 - rγ - 1 None of these ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The fuel in diesel engine is normally injected at pressure of 90-130 kg/cm² 5-10 kg/cm² 60-80 kg/cm² 20-25 kg/cm² 90-130 kg/cm² 5-10 kg/cm² 60-80 kg/cm² 20-25 kg/cm² ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines Most high speed compression engines operate on Diesel cycle Special type of air cycle Otto cycle Dual combustion cycle Diesel cycle Special type of air cycle Otto cycle Dual combustion cycle ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The cetane number of diesel oil, generally available, is 40 to 55 25 to 30 20 to 25 30 to 40 40 to 55 25 to 30 20 to 25 30 to 40 ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines In petrol engine, using a fixed octane rating fuel and fixed compression ratio, supercharging will _________ the knocking tendency. Decrease Not effected None of these Increase Decrease Not effected None of these Increase ANSWER DOWNLOAD EXAMIANS APP
Internal Combustion Engines The knock in diesel engine occurs due to Instantaneous and rapid burning of the first part of the charge Reduction of delay period Delayed burning of the first part of the charge Instantaneous auto ignition of last part of charge Instantaneous and rapid burning of the first part of the charge Reduction of delay period Delayed burning of the first part of the charge Instantaneous auto ignition of last part of charge ANSWER DOWNLOAD EXAMIANS APP
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