Compressors, Gas Turbines and Jet Engines Water is injected in gas turbine cycle to Control temperature Increase efficiency Control fire hazards Control output of turbine Control temperature Increase efficiency Control fire hazards Control output of turbine ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Inter cooling in compressors Results in saving of power in compressing a given volume to given pressure Enables compression in two stages Is the standard practice for big compressors Cools the delivered air Results in saving of power in compressing a given volume to given pressure Enables compression in two stages Is the standard practice for big compressors Cools the delivered air ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Inter-cooling in gas turbine results in Increase in net output but decrease in thermal efficiency Decrease in both thermal efficiency and net output Increase 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 Decrease in both thermal efficiency and net output Increase in both thermal efficiency and net output Increase in thermal efficiency but decrease in net output ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines If p₁, is the pressure of air entering the L.P. cylinder and p₂ is the pressure of air leaving the L.P. cylinder (or inter-cooler pressure), then the ratio of cylinder diameters for a single acting, two stage reciprocating air compressor with complete intercooling is given by (where D₁ = Dia. of L.P. cylinder, and D₂ = Dia. of H.P. cylinder) D₁/D₂ = p₂/p₁ None of these D₁/D₂ = p₁/p₂ D₁/D₂ = p₁ p₂ D₁/D₂ = p₂/p₁ None of these D₁/D₂ = p₁/p₂ D₁/D₂ = p₁ p₂ ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Reheating in gas turbine results in Decrease of work ratio Both (A) and (B) above Increase of work ratio Decrease of thermal efficiency Decrease of work ratio Both (A) and (B) above Increase of work ratio Decrease of thermal efficiency ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Losses in a centrifugal compressor are due to All of the listed here Impeller channel losses Inlet losses Diffuser losses All of the listed here Impeller channel losses Inlet losses Diffuser losses ANSWER DOWNLOAD EXAMIANS APP
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