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 Increase Decrease Remain same None of these Increase Decrease ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Gas turbine cycle with regenerator Allows high compression ratio Allows operation at very high altitudes Increases thermal efficiency Decreases heat loss is exhaust Allows high compression ratio Allows operation at very high altitudes Increases thermal efficiency Decreases heat loss is exhaust ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In jet engines, for the efficient production of large power, fuel is burnt in an atmosphere of Atmospheric air Compressed air Oxygen alone Vacuum Atmospheric air Compressed air Oxygen alone Vacuum ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The volumetric efficiency of compressor with increase in compression ratio will May increase or decrease depending on clearance volume Decrease Remain same Increase May increase or decrease depending on clearance volume Decrease Remain same Increase ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The compression ratio in a gas turbine is of the order of 0.33402777777778 0.50069444444444 3.5 : 1 0.20902777777778 0.33402777777778 0.50069444444444 3.5 : 1 0.20902777777778 ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Ram compression in turbojet involves Reduction of speed of incoming air and conversion of part of it into pressure energy Compression of inlet air Lost work Increasing speed of incoming air Reduction of speed of incoming air and conversion of part of it into pressure energy Compression of inlet air Lost work Increasing speed of incoming air ANSWER DOWNLOAD EXAMIANS APP
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