Compressors, Gas Turbines and Jet Engines The maximum propulsion efficiency of a turbojet is attained at around following speed 1050 km/hr 1700 km/hr 2400 km/hr 550 km/hr 1050 km/hr 1700 km/hr 2400 km/hr 550 km/hr ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In a four stage compressor, if the pressure at the first and third stage is 1 bar and 16 bar, then the delivery pressure at the fourth stage will be 256 bar 1 bar 64 bar 16 bar 256 bar 1 bar 64 bar 16 bar ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The compressor capacity with decrease in suction temperature Remain unaffected May increase or decrease depending on compressor capacity Decreases Increases Remain unaffected May increase or decrease depending on compressor capacity Decreases Increases 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 Increase Decrease None of these Remain same Increase Decrease None of these ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In a centrifugal compressor, an increase in speed at a given pressure ratio causes Increase in flow Increase in efficiency Decrease in flow Increase in flow and decrease in efficiency Increase in flow Increase in efficiency Decrease in flow Increase in flow and decrease in efficiency ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Aeroplanes employ following type of compressor None of these Axial flow Centrifugal Radial flow None of these Axial flow Centrifugal Radial flow ANSWER DOWNLOAD EXAMIANS APP
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