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
Compressors, Gas Turbines and Jet Engines A centrifugal compressor works on the principle of Generating pressure directly Conversion of pressure energy into kinetic energy Centripetal action Conversion of kinetic energy into pressure energy Generating pressure directly Conversion of pressure energy into kinetic energy Centripetal action Conversion of kinetic energy into pressure energy ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In a high pressure compressor, the delivery pressure is 8 to 10 bar 10 to 15 bar 5 to 8 bar 1 to 5 bar 8 to 10 bar 10 to 15 bar 5 to 8 bar 1 to 5 bar ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Ratio of indicated H.P. and brake H.P. is known as Volumetric efficiency Isothermal efficiency Mechanical efficiency Adiabatic efficiency Volumetric efficiency Isothermal efficiency Mechanical efficiency Adiabatic efficiency ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines A closed gas turbine in which fuel is burnt directly in the air is not possible because of High friction losses High specific volume Increasing gas temperature Paucity of O2 High friction losses High specific volume Increasing gas temperature Paucity of O2 ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Work ratio of a gas turbine may be improved by Both (A) and (C) above Decreasing the compression work Increasing the turbine work Increasing the compression work Both (A) and (C) above Decreasing the compression work Increasing the turbine work Increasing the compression work ANSWER DOWNLOAD EXAMIANS APP
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