Compressors, Gas Turbines and Jet Engines The maximum propulsion efficiency of a turbojet is attained at around following speed 1700 km/hr 550 km/hr 2400 km/hr 1050 km/hr 1700 km/hr 550 km/hr 2400 km/hr 1050 km/hr ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines A rocket works with maximum overall efficiency when air craft velocity is equal to the Twice the jet velocity Average of the jet velocity Jet velocity Half the jet velocity Twice the jet velocity Average of the jet velocity Jet velocity Half the jet velocity ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Work ratio of a gas turbine may be improved by Decreasing the compression work Both (A) and (C) above Increasing the compression work Increasing the turbine work Decreasing the compression work Both (A) and (C) above Increasing the compression work Increasing the turbine work ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Reheating in multistage expansion gas turbine results in Maximum work output Reduction in compressor work High thermal efficiency Decrease of heat loss in exhaust Maximum work output Reduction in compressor work High thermal efficiency Decrease of heat loss in exhaust ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The process, which causes the air to enter the impeller blades of a centrifugal compressor at ________ velocity (without effecting the mass of air to flow and velocity of flow) is known as prewhirl. Zero Increased None of these Reduced Zero Increased None of these Reduced ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Which of the following fuels can be used in turbojet engines? Methyl alcohol Kerosene High speed diesel oil Liquid hydrogen Methyl alcohol Kerosene High speed diesel oil Liquid hydrogen ANSWER DOWNLOAD EXAMIANS APP
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