Compressors, Gas Turbines and Jet Engines The work-done on a compressor will be minimum if air is taken from A source of low temperature air A source of high temperature air The atmosphere A source at 0° C A source of low temperature air A source of high temperature air The atmosphere A source at 0° C ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The compressor efficiency is the Isothermal H.P/indicated H.R Total output/air input Isothermal H.P./shaft H.R Compression work/motor input Isothermal H.P/indicated H.R Total output/air input Isothermal H.P./shaft H.R Compression work/motor input ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines If infinite number of heaters be used in a gas turbine, then expansion process in turbine approaches Isothermal Isochoric Adiabatic Isentropic Isothermal Isochoric Adiabatic Isentropic ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The thermodynamic efficiency of rotary compressor is based on Isothermal compression Isentropic compression Polytropic compression Adiabatic compression Isothermal compression Isentropic compression Polytropic compression Adiabatic compression ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The ratio of outlet whirl velocity to blade velocity in case of centrifugal compressor is called None of these Slip factor Velocity coefficient Velocity factor None of these Slip factor Velocity coefficient Velocity factor ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines High air-fuel ratio is used in gas turbines To reduce the exit temperature To increase the output To increase the efficiency To save fuel To reduce the exit temperature To increase the output To increase the efficiency To save fuel ANSWER DOWNLOAD EXAMIANS APP
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