Compressors, Gas Turbines and Jet Engines The thrust of a jet propulsion power unit can be increased by Injecting water into the compressor All of these Injecting ammonia into the combustion chamber Burning fuel after gas turbine Injecting water into the compressor All of these Injecting ammonia into the combustion chamber Burning fuel after gas turbine ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines For perfect intercooling in a three stage compressor p₁ p₂ = p₃ p₄ p₁ p₃ = p₂ p₄ p₃/p₁ = p₄/p₂ p₂/p₁ = p₃/p₂ = p₄/p₃ p₁ p₂ = p₃ p₄ p₁ p₃ = p₂ p₄ p₃/p₁ = p₄/p₂ p₂/p₁ = p₃/p₂ = p₄/p₃ ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Inter-cooling in gas turbine results in Increase in thermal efficiency but decrease in net output Increase in net output but decrease in thermal efficiency Increase in both thermal efficiency and net output Decrease in both thermal efficiency and net output Increase in thermal efficiency but decrease in net output Increase in net output but decrease in thermal efficiency Increase in both thermal efficiency and net output Decrease in both thermal efficiency and net output ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The pressure ratio for an open cycle gas turbine compared to closed cycle gas turbine of same h.p. is Same High Low/high depending on make and type Low Same High Low/high depending on make and type Low ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Maximum work is done in compressing air when the compression is Isothermal None of these Adiabatic Polytropic Isothermal None of these Adiabatic Polytropic 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 (W₁ + W₂)/W₂ W₂/(W₁ + W₂) W₁/(W₁ + W₂) (W₁ + W₂)/W₁ (W₁ + W₂)/W₂ W₂/(W₁ + W₂) ANSWER DOWNLOAD EXAMIANS APP
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