Compressors, Gas Turbines and Jet Engines In a single stage, single acting reciprocating air compressor without clearance volume, the work-done is maximum during Isentropic compression None of these Isothermal compression Polytropic compression Isentropic compression None of these Isothermal compression Polytropic compression ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The efficiency of roots blower ________ with the increase in pressure ratio. Increases Does not change Decreases None of these Increases Does not change Decreases None of these ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The pressure ratio of an ideal vaned compressor with increase in mass flow rate Decreases Remain constant First decreases and then increases Increases Decreases Remain constant First decreases and then increases Increases ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines More than one stage will be preferred for reciprocating compressor if the delivery pressure is more than 10 kg/cm² 2 kg/cm² 14.7 kg/cm² 6 kg/cm² 10 kg/cm² 2 kg/cm² 14.7 kg/cm² 6 kg/cm² ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The velocity of air entering in a rocket is ___ as compared to an aircraft. Zero Same Less More Zero Same Less More 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 0.85 0.99 0.9 0.75 0.85 0.99 0.9 0.75 ANSWER DOWNLOAD EXAMIANS APP
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