Compressors, Gas Turbines and Jet Engines A rocket engine for the combustion of its fuel Does not require oxygen Carries its own oxygen Uses compressed atmospheric air Uses surrounding air Does not require oxygen Carries its own oxygen Uses compressed atmospheric air Uses surrounding air ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The work done per unit mass of air in compression will be least when 'n' is equal to 1.2 1.4 1 1.3 1.2 1.4 1 1.3 ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines There is a certain pressure ratio (optimum) for a gas turbine at which its thermal efficiency is maximum. With increase in turbine temperature, the value of pressure ratio for the peak efficiency would Remain same None of these Decrease Increase Remain same None of these Decrease Increase ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In a double acting compressor, the air is compressed In one cylinder In two cylinders on both sides of the piston In a single cylinder on both sides of the piston In two cylinders In one cylinder In two cylinders on both sides of the piston In a single cylinder on both sides of the piston In two cylinders ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Volumetric efficiency of air compressors is of the order of 40 - 50% 60 - 70% 20 - 30% 70 - 90% 40 - 50% 60 - 70% 20 - 30% 70 - 90% ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Diffuser in a compressor is used to Increase velocity Convert kinetic energy into pressure energy Make the flow streamline Convert pressure energy into kinetic energy Increase velocity Convert kinetic energy into pressure energy Make the flow streamline Convert pressure energy into kinetic energy ANSWER DOWNLOAD EXAMIANS APP
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