Compressors, Gas Turbines and Jet Engines A rocket works with maximum overall efficiency when air craft velocity is equal to the Half the jet velocity Twice the jet velocity Jet velocity Average of the jet velocity Half the jet velocity Twice the jet velocity Jet velocity Average of the jet velocity ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The compression ratio for the compressor is always _________ unity. Less than More than None of these Equal to Less than More than None of these Equal to ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The mass of gas turbine per kW developed is about ________ as that of an I.C. engine. Same One fourth One-half One sixth Same One fourth One-half One sixth ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Ratio of indicated H.P. and brake H.P. is known as Mechanical efficiency Volumetric efficiency Adiabatic efficiency Isothermal efficiency Mechanical efficiency Volumetric efficiency Adiabatic efficiency Isothermal efficiency ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The following is true for an open cycle gas turbine having exhaust heat exchanger. Atmospheric air before entering the compressor is Bled gas from turbine is heated and readmitted for complete expansion Heated Compressed air before entering the combustion chamber is heated Exhaust gases drive the compressor Bled gas from turbine is heated and readmitted for complete expansion Heated Compressed air before entering the combustion chamber is heated Exhaust gases drive the compressor ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Pick up the correct statement Gas turbines have their blades similar to steam turbine Gas turbines use both air and liquid cooling Gas turbine's blade will appear as impulse section at the hub and as a reaction section at tip Large gas turbines use radial inflow turbines Gas turbines have their blades similar to steam turbine Gas turbines use both air and liquid cooling Gas turbine's blade will appear as impulse section at the hub and as a reaction section at tip Large gas turbines use radial inflow turbines ANSWER DOWNLOAD EXAMIANS APP
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