Compressors, Gas Turbines and Jet Engines Standard air is the air at ___ and relative humidity of 36 percent. 1 bar and 40°C 0.1 bar and 40°C 0.1 bar and 20°C 1 bar and 20°C 1 bar and 40°C 0.1 bar and 40°C 0.1 bar and 20°C 1 bar and 20°C 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 Increase in thermal efficiency but decrease in net output Decrease in both thermal efficiency and net output Increase in both thermal efficiency and net output Increase in net output but decrease in thermal efficiency Increase in thermal efficiency but decrease in net output Decrease in both thermal efficiency and net output Increase in both thermal efficiency and 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 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 = (p₁ p₃)1/2 D₁/D₂ = (p₁/p₃)1/4 D₁/D₂ = (p₃/p₁)1/4 D₁/D₂ = (p₁ p₃)1/4 D₁/D₂ = (p₁ p₃)1/2 D₁/D₂ = (p₁/p₃)1/4 D₁/D₂ = (p₃/p₁)1/4 D₁/D₂ = (p₁ p₃)1/4 ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The axial flow compressor is preferred in aircraft gas turbines because of Low frontal area None of the listed here High pressure rise Higher thrust Low frontal area None of the listed here High pressure rise Higher thrust ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines For minimum work in multistage compression, assuming same index of compression in all stages Work done in subsequent stages should increase Work done in first stage should be more Work done in all stages should be equal Work done in subsequent stages should decrease Work done in subsequent stages should increase Work done in first stage should be more Work done in all stages should be equal Work done in subsequent stages should decrease 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 Low Same High Low/high depending on make and type Low Same High Low/high depending on make and type ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS