Compressors, Gas Turbines and Jet Engines In jet engines, for the efficient production of large power, fuel is burnt in an atmosphere of Vacuum Atmospheric air Compressed air Oxygen alone Vacuum Atmospheric air Compressed air Oxygen alone ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Ratio of indicated H.P. and brake H.P. is known as Volumetric efficiency Mechanical efficiency Adiabatic efficiency Isothermal efficiency Volumetric efficiency Mechanical efficiency Adiabatic efficiency Isothermal efficiency ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Only rocket engines can be propelled to space because They can generate very high thrust They are not air breathing engines They have high propulsion efficiency These engines can work on several fuels They can generate very high thrust They are not air breathing engines They have high propulsion efficiency These engines can work on several fuels ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The material commonly used for air craft gas turbine is Duralumin Stainless steel High alloy steel Timken, Haste alloys Duralumin Stainless steel High alloy steel Timken, Haste alloys ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The process, which causes the air to enter the impeller blades of a centrifugal compressor at ________ velocity (without effecting the mass of air to flow and velocity of flow) is known as prewhirl. Reduced None of these Increased Zero Reduced None of these Increased Zero ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines High air-fuel ratio in gas turbines Increases power output Improves thermal efficiency Do not damage turbine blades Reduces exhaust temperature Increases power output Improves thermal efficiency Do not damage turbine blades Reduces exhaust temperature ANSWER DOWNLOAD EXAMIANS APP
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