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 High friction losses Paucity of O2 Increasing gas temperature High specific volume High friction losses Paucity of O2 Increasing gas temperature ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The propulsive power of the rocket is (where v₁ = Jet velocity, and v₂ = Aircraft velocity) (v₁² -v₂²)/2g (v₁ - v₂)²/g (v₁ - v₂)²/2g (v₁² -v₂²)/g (v₁² -v₂²)/2g (v₁ - v₂)²/g (v₁ - v₂)²/2g (v₁² -v₂²)/g 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 Diffuser inlet radius Impeller inlet radius Diffuser outlet radius Impeller outlet radius Diffuser inlet radius Impeller inlet radius ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The compressor capacity with decrease in suction temperature May increase or decrease depending on compressor capacity Decreases Increases Remain unaffected May increase or decrease depending on compressor capacity Decreases Increases Remain unaffected ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The efficiency of roots blower ________ with the increase in pressure ratio. None of these Increases Decreases Does not change None of these Increases Decreases Does not change 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 Centrifugal Reciprocating Screw Axial Centrifugal Reciprocating Screw Axial ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS