Compressors, Gas Turbines and Jet Engines The efficiency of jet engine is Higher at high altitudes Same at all altitudes Lower at low speed Higher at high speed Higher at high altitudes Same at all altitudes Lower at low speed Higher at high speed ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In axial flow compressor, exit flow angle deviation from the blade angle is a function of Blade camber and space-chord ratio Blade camber Blade camber and incidence angle Space-chord ratio Blade camber and space-chord ratio Blade camber Blade camber and incidence angle Space-chord ratio ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The thermal efficiency of a simple gas turbine for a given turbine inlet temperature with increase in pressure ratio First decreases and then increases First increases and then decreases Increases Decreases First decreases and then increases First increases and then decreases Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In gas turbines, high thermal efficiency is obtained in Closed cycle Closed cycle & Open cycle Open cycle Closed/open depending on other considerations Closed cycle Closed cycle & Open cycle Open cycle Closed/open depending on other considerations ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The stagnation pressure rise in a centrifugal compressor takes place In the inlet guide vanes only In the diffuser only In the impeller only In the diffuser and impeller In the inlet guide vanes only In the diffuser only In the impeller only In the diffuser and impeller ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In a centrifugal compressor, the highest Mach number leading to shock wave in the fluid flow occurs at Diffuser outlet radius Impeller outlet radius Impeller inlet radius Diffuser inlet radius Diffuser outlet radius Impeller outlet radius Impeller inlet radius Diffuser inlet radius ANSWER DOWNLOAD EXAMIANS APP
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