Compressors, Gas Turbines and Jet Engines A turboprop is preferred to turbojet because It has high propulsive efficiency at high speeds It has high power for take off It can fly at supersonic speeds It can fly at high elevations It has high propulsive efficiency at high speeds It has high power for take off It can fly at supersonic speeds It can fly at high elevations 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 Half the jet velocity Average of the jet velocity Jet velocity Twice the jet velocity Half the jet velocity Average of the jet velocity Jet velocity Twice the jet velocity ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In gas turbines, high thermal efficiency is obtained in Closed/open depending on other considerations Closed cycle & Open cycle Open cycle Closed cycle Closed/open depending on other considerations Closed cycle & Open cycle Open cycle Closed cycle ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The specific output per kg mass flow rate of a gas turbine (having fixed efficiencies of compressor and turbine and fixed higher and lower temperature) with increase in pressure ratio will Increase first at fast rate and then slow First increase, reach maximum and then decrease Decrease continuously Increase first at slow rate and then fast Increase first at fast rate and then slow First increase, reach maximum and then decrease Decrease continuously Increase first at slow rate and then fast ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines A jet engine has No propeller Propeller at back Propeller on the top Propeller in front No propeller Propeller at back Propeller on the top Propeller in front ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Maximum work is done in compressing air when the compression is Polytropic Adiabatic None of these Isothermal Polytropic Adiabatic None of these Isothermal ANSWER DOWNLOAD EXAMIANS APP
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