Compressors, Gas Turbines and Jet Engines The criterion of the thermodynamic efficiency for rotary compressor is None of the listed here Isothermal compression Isentropic compression Polytropic compression None of the listed here Isothermal compression Isentropic compression Polytropic compression ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Only rocket engines can be propelled to space because They are not air breathing engines These engines can work on several fuels They can generate very high thrust They have high propulsion efficiency They are not air breathing engines These engines can work on several fuels They can generate very high thrust They have high propulsion efficiency ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The work done per unit mass of air in compression will be least when 'n' is equal to 1.4 1.3 1 1.2 1.4 1.3 1 1.2 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 Exhaust gases drive the compressor Heated Bled gas from turbine is heated and readmitted for complete expansion Compressed air before entering the combustion chamber is heated Exhaust gases drive the compressor Heated Bled gas from turbine is heated and readmitted for complete expansion Compressed air before entering the combustion chamber is heated ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Ramjet engine Is self operating at zero flight speed Requires no air for its operation Is not self operating at zero flight speed Produces a jet consisting of plasma Is self operating at zero flight speed Requires no air for its operation Is not self operating at zero flight speed Produces a jet consisting of plasma ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The volumetric efficiency for reciprocating air compressors is about 60 to 70% 70 to 90% 40 to 60% 10 to 40% 60 to 70% 70 to 90% 40 to 60% 10 to 40% ANSWER DOWNLOAD EXAMIANS APP
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