Compressors, Gas Turbines and Jet Engines In which case the air-fuel ratio is likely to be maximum? 4-stroke petrol engine 4-stroke diesel engine Multi cylinder engine Gas turbine 4-stroke petrol engine 4-stroke diesel engine Multi cylinder engine Gas turbine ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The overall efficiency of the compressed air system is the None of these Product of shaft output of air motor and shaft input to the compressor Ratio of shaft input to the compressor to the shaft output of air motor Ratio of shaft output of the air motor to the shaft input to the compressor None of these Product of shaft output of air motor and shaft input to the compressor Ratio of shaft input to the compressor to the shaft output of air motor Ratio of shaft output of the air motor to the shaft input to the compressor ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In n₁ and n₂ are the indices of compression for the first and second stage of compression, then the ratio of work-done on the first and second stages (W₁/W₂) with perfect intercooling is given by W₁/W₂ = n₂(n₁ - 1)/n₁(n₂ - 1) W₁/W₂ = n₁(n₂ - 1)/n₂(n₁ - 1) W₁/W₂ = n₂/n₁ W₁/W₂ = n₁/n₂ W₁/W₂ = n₂(n₁ - 1)/n₁(n₂ - 1) W₁/W₂ = n₁(n₂ - 1)/n₂(n₁ - 1) W₁/W₂ = n₂/n₁ W₁/W₂ = n₁/n₂ ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines An after-cooler is used to Remove impurities from air Reduce volume of air Cause moisture and oil vapour to drop out Cool the air Remove impurities from air Reduce volume of air Cause moisture and oil vapour to drop out Cool the air ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In a single stage, single acting reciprocating air compressor, without clearance, the work-done on the air during isentropic compression is ________ the heat required to raise the temperature of air from T₁ to T₂ at a constant pressure. Less than Greater than Equal to None of these Less than Greater than Equal to None of these ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Which of the following fuels can be used in turbojet engines? Liquid hydrogen Kerosene Methyl alcohol High speed diesel oil Liquid hydrogen Kerosene Methyl alcohol High speed diesel oil ANSWER DOWNLOAD EXAMIANS APP
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