Compressors, Gas Turbines and Jet Engines A rocket works with maximum overall efficiency when air craft velocity is equal to the Jet velocity Half the jet velocity Average of the jet velocity Twice the jet velocity Jet velocity Half the jet velocity Average of the jet velocity Twice the jet velocity ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Surging is the phenomenon of Unsteady, periodic and reversed flow Air stream blocking the passage Motion of air at sonic velocity Air stream not able to follow the blade contour Unsteady, periodic and reversed flow Air stream blocking the passage Motion of air at sonic velocity Air stream not able to follow the blade contour ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines A closed cycle gas turbine gives ________ efficiency as compared to an open cycle gas turbine. None of these Lower Same Higher None of these Lower Same Higher ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Isothermal compression efficiency can be attained by running the compressor At very high speed At average speed At zero speed At very slow speed At very high speed At average speed At zero speed At very slow speed ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The weight per horse power ratio for gas in Turbine as compared to I.C. engine and steam turbine is None of these Same Lower Higher None of these Same Lower Higher ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The propulsive power of the rocket is (where v₁ = Jet velocity, and v₂ = Aircraft velocity) (v₁ - v₂)²/g (v₁² -v₂²)/g (v₁ - v₂)²/2g (v₁² -v₂²)/2g (v₁ - v₂)²/g (v₁² -v₂²)/g (v₁ - v₂)²/2g (v₁² -v₂²)/2g ANSWER DOWNLOAD EXAMIANS APP
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