Compressors, Gas Turbines and Jet Engines Water is injected in gas turbine cycle to Control fire hazards Increase efficiency Control temperature Control output of turbine Control fire hazards Increase efficiency Control temperature Control output of turbine ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines If p₁ is the pressure of air entering the L.P, cylinder and p₃ is the pressure of air leaving the H.P. cylinder, then the ratio of cylinder diameters for a single acting, two stage reciprocating compressor with complete intercooling is given by D₁/D₂ = (p₃/p₁)1/4 D₁/D₂ = (p₁/p₃)1/4 D₁/D₂ = (p₁ p₃)1/4 D₁/D₂ = (p₁ p₃)1/2 D₁/D₂ = (p₃/p₁)1/4 D₁/D₂ = (p₁/p₃)1/4 D₁/D₂ = (p₁ p₃)1/4 D₁/D₂ = (p₁ p₃)1/2 ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Isothermal compression though most efficient, but is not practicable because Compressor has to run at very slow speed to achieve it It is impossible in practice It requires very big cylinder It does not increase pressure much Compressor has to run at very slow speed to achieve it It is impossible in practice It requires very big cylinder It does not increase pressure much 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 0.75 0.99 0.9 0.85 0.75 0.99 0.9 0.85 ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The volumetric efficiency of compressor with increase in compression ratio will Decrease Remain same May increase or decrease depending on clearance volume Increase Decrease Remain same May increase or decrease depending on clearance volume Increase ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The volumetric efficiency for reciprocating air compressors is about 10 to 40% 60 to 70% 70 to 90% 40 to 60% 10 to 40% 60 to 70% 70 to 90% 40 to 60% ANSWER DOWNLOAD EXAMIANS APP
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