Compressors, Gas Turbines and Jet Engines A rocket works with maximum overall efficiency when air craft velocity is equal to the Jet velocity Average of the jet velocity Half the jet velocity Twice the jet velocity Jet velocity Average of the jet velocity Half the jet velocity Twice the jet velocity 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 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 Increase in flow ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Actual compression curve is Same as adiabatic Better than isothermal and adiabatic In between isothermal and adiabatic Same as isothermal Same as adiabatic Better than isothermal and adiabatic In between isothermal and adiabatic Same as isothermal ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The ratio of specific weight/h.p. of gas turbine and I.C engines may be typically of the order of 0.084027777777778 0.16736111111111 0.045833333333333 0.042361111111111 0.084027777777778 0.16736111111111 0.045833333333333 0.042361111111111 ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The area of actual indicator diagram on an air compressor as compared to area of ideal indicator diagram is Less More/less depending on compressor capacity More Same Less More/less depending on compressor capacity More Same ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Isothermal compression efficiency, even when running at high speed, can be approached by using Cold water spray Both (A) and (B) above Fully insulating the cylinder Multistage compression Cold water spray Both (A) and (B) above Fully insulating the cylinder Multistage compression ANSWER DOWNLOAD EXAMIANS APP
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