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 Diffuser inlet radius Impeller outlet radius Impeller inlet radius Diffuser outlet radius Diffuser inlet radius Impeller outlet radius Impeller inlet radius ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The area of actual indicator diagram on an air compressor as compared to area of ideal indicator diagram is Less More More/less depending on compressor capacity Same Less More More/less depending on compressor capacity Same ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In a reciprocating air compressor, the compression work per kg of air Increases as clearance volume increases Decreases as clearance volume increases Is independent of clearance volume Increases as clearance volume decreases Increases as clearance volume increases Decreases as clearance volume increases Is independent of clearance volume Increases as clearance volume decreases ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The compressor efficiency is the Isothermal H.P/indicated H.R Total output/air input Compression work/motor input Isothermal H.P./shaft H.R Isothermal H.P/indicated H.R Total output/air input Compression work/motor input Isothermal H.P./shaft H.R ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The combustion efficiency of a gas turbine using perfect combustion chamber is of the order of 0.75 0.9 0.99 0.85 0.75 0.9 0.99 0.85 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 specific volume Paucity of O2 Increasing gas temperature High friction losses High specific volume Paucity of O2 Increasing gas temperature High friction losses ANSWER DOWNLOAD EXAMIANS APP
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