Compressors, Gas Turbines and Jet Engines Which of the following fuels can be used in turbojet engines? High speed diesel oil Methyl alcohol Kerosene Liquid hydrogen High speed diesel oil Methyl alcohol Kerosene Liquid hydrogen ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines During peak load periods, the best method of controlling compressors is Start-stop motor Variable speed Constant speed unloader Relief valve Start-stop motor Variable speed Constant speed unloader Relief valve 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 None of these Remain same Decrease Increase None of these Remain same Decrease Increase 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 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 ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines If V, U and Vr represent the absolute velocity of fluid, velocity of blade, and relative velocity of fluid, and suffix ‘I’ and ‘o’ stand for entry and exit conditions, then in a rotary machine whose degree of reaction is unity Vi = Vo V = Uo U < Vo Vt > Vo Vi = Vo V = Uo U < Vo Vt > Vo ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The air entry velocity m a rocket as compared to aircraft is Zero Less Same More Zero Less Same More ANSWER DOWNLOAD EXAMIANS APP
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