Compressors, Gas Turbines and Jet Engines Volumetric efficiency of a compressor decreases with ________ in compression ratio. Decrease Remain same Does not change Increase Decrease Remain same Does not change Increase 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 both thermal efficiency and net output Increase in thermal efficiency but decrease in net output Decrease in both thermal efficiency and net output Increase in net output but decrease in thermal efficiency Increase in both thermal efficiency and net output Increase in thermal efficiency but decrease in net output Decrease in both thermal efficiency and net output ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Adiabatic compression is one in which No heat leaves or enters the compressor cylinder during compression Temperature rise follows a linear relationship Work done is maximum Temperature during compression remains constant No heat leaves or enters the compressor cylinder during compression Temperature rise follows a linear relationship Work done is maximum Temperature during compression remains constant ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The efficiency of roots blower ________ with the increase in pressure ratio. Decreases Increases None of these Does not change Decreases Increases None of these Does not change 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 = p₁ p₂ D₁/D₂ = p₁/p₂ None of these D₁/D₂ = p₂/p₁ D₁/D₂ = p₁ p₂ D₁/D₂ = p₁/p₂ None of these D₁/D₂ = p₂/p₁ ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Fighter bombers use following type of engine Ramjet Turbo-propeller Turbojet Rocket Ramjet Turbo-propeller Turbojet Rocket ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS