Compressors, Gas Turbines and Jet Engines The overall isothermal efficiency of compressor is defined as the ratio of Power to drive compressor to isothermal h.p. Work to compress air isothermally to work for actual compression Isothermal h.p. to the BHP of motor Isothermal h.p. to adiabatic h.p. Power to drive compressor to isothermal h.p. Work to compress air isothermally to work for actual compression Isothermal h.p. to the BHP of motor Isothermal h.p. to adiabatic h.p. ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Choose the correct statement Gas turbine is capable of rapid start up and loading Gas turbine requires lot of cooling water Gas turbines have high standby losses and require lot of maintenance Gas turbines has flat efficiency at part loads Gas turbine is capable of rapid start up and loading Gas turbine requires lot of cooling water Gas turbines have high standby losses and require lot of maintenance Gas turbines has flat efficiency at part loads ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The degree of reaction is usually kept ________ for all types of axial flow compressors. 0.2 0.3 0.4 0.5 0.2 0.3 0.4 0.5 ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In the cross compounding of the gas turbine plant H.P. compressor is connected to L.P. turbine and L.P. compressor is connected to H.P. turbine All are connected in series Both the arrangements can be employed H.P. compressor is connected to H.P. turbine and L.P. compressor to L.P. turbine H.P. compressor is connected to L.P. turbine and L.P. compressor is connected to H.P. turbine All are connected in series Both the arrangements can be employed H.P. compressor is connected to H.P. turbine and L.P. compressor to L.P. turbine ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Ratio of indicated h.p. to shaft h.p. in known as Volumetric efficiency Isothermal efficiency Compressor efficiency Mechanical efficiency Volumetric efficiency Isothermal efficiency Compressor efficiency Mechanical efficiency ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Isothermal compression though most efficient, but is not practicable because It requires very big cylinder Compressor has to run at very slow speed to achieve it It is impossible in practice It does not increase pressure much It requires very big cylinder Compressor has to run at very slow speed to achieve it It is impossible in practice It does not increase pressure much ANSWER DOWNLOAD EXAMIANS APP