Compressors, Gas Turbines and Jet Engines Isothermal compression though most efficient, but is not practicable because It does not increase pressure much Compressor has to run at very slow speed to achieve it It requires very big cylinder It is impossible in practice It does not increase pressure much Compressor has to run at very slow speed to achieve it It requires very big cylinder It is impossible in practice ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The ratio of the increase in pressure in rotor blades to total increase in pressure in the stage is called Slip factor Pressure ratio Degree of reaction Pressure coefficient Slip factor Pressure ratio Degree of reaction Pressure coefficient ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines For supplying intermittent small quantity of air at high pressure, following compressor is best suited Reciprocating Centrifugal Axial Screw Reciprocating Centrifugal Axial Screw ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Stalling of blades in axial flow compressor is the phenomenon of Unsteady periodic and reversed flow Motion of air at sonic velocity Air stream not able to follow the blade contour Air stream blocking the passage Unsteady periodic and reversed flow Motion of air at sonic velocity Air stream not able to follow the blade contour Air stream blocking the passage ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The degree of reaction of an axial flow turbine is the ratio of isentropic temperature drop in a blade row to the Total temperature drop Total adiabatic temperature drop Total temperature drop in the stage Adiabatic temperature drop in the stage Total temperature drop Total adiabatic temperature drop Total temperature drop in the stage Adiabatic temperature drop in the stage ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The ratio of the volume of free air delivery per stroke to the swept volume of the piston, is known as Volumetric efficiency Mechanical efficiency Isothermal efficiency Compressor efficiency Volumetric efficiency Mechanical efficiency Isothermal efficiency Compressor efficiency ANSWER DOWNLOAD EXAMIANS APP
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