Compressors, Gas Turbines and Jet Engines For perfect intercooling in a two stage compressor p₂/p₁ = p₃/p₂ p₁ = p₂ p3 p₁/p₃ = p₂/p₁ p₁ = p3 p₂/p₁ = p₃/p₂ p₁ = p₂ p3 p₁/p₃ = p₂/p₁ p₁ = p3 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 Isothermal efficiency Adiabatic efficiency Mechanical efficiency Volumetric efficiency Isothermal efficiency Adiabatic efficiency ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The efficiency of the vane blower is (where W₁ = Workdone due to compression, and W₂ = Workdone due to back flow) W₁/(W₁ + W₂) (W₁ + W₂)/W₁ W₂/(W₁ + W₂) (W₁ + W₂)/W₂ W₁/(W₁ + W₂) (W₁ + W₂)/W₁ W₂/(W₁ + W₂) (W₁ + W₂)/W₂ ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines For a two stage compressor, if index of compression for higher stage is greater than index of compression for lower stage, then the optimum pressure as compared to ideal case will Remain unaffected Increase Other factors control it Decrease Remain unaffected Increase Other factors control it Decrease ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The effective power of gas turbines is increased by adding the following in compressor Nitrogen Hydrogen Ammonia and water vapour Carbon dioxide Nitrogen Hydrogen Ammonia and water vapour Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In a single stage, single acting reciprocating air compressor without clearance volume, the work-done is maximum during Polytropic compression Isothermal compression None of these Isentropic compression Polytropic compression Isothermal compression None of these Isentropic compression ANSWER DOWNLOAD EXAMIANS APP
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