Compressors, Gas Turbines and Jet Engines In gas turbines, high thermal efficiency is obtained in Open cycle Closed cycle & Open cycle Closed cycle Closed/open depending on other considerations Open cycle Closed cycle & Open cycle Closed cycle Closed/open depending on other considerations ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines It is not possible to use closed gas turbine cycle in aeronautical engines because It is inefficient It requires cooling water for its operation None of these It is bulky It is inefficient It requires cooling water for its operation None of these It is bulky ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines During base load operation, the best method of controlling compressor is Start-stop motor Constant speed unloader Relief valve Variable speed Start-stop motor Constant speed unloader Relief valve Variable speed ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines When air is to be compressed at a high pressure, then it is advantageous to use Single stage compression Multistage compression without intercooling Multistage compression with intercooling None of these Single stage compression Multistage compression without intercooling Multistage compression with intercooling None of these ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Intercooling in gas turbines Decreases net output and thermal efficiency both Decreases net output but increases thermal efficiency Increases net output and thermal efficiency both Increases net output but decreases thermal efficiency Decreases net output and thermal efficiency both Decreases net output but increases thermal efficiency Increases net output and thermal efficiency both Increases net output but decreases thermal efficiency 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)1/4 D₁/D₂ = (p₁ p₃)1/4 D₁/D₂ = (p₃/p₁)1/4 D₁/D₂ = (p₁ p₃)1/2 D₁/D₂ = (p₁/p₃)1/4 D₁/D₂ = (p₁ p₃)1/4 D₁/D₂ = (p₃/p₁)1/4 D₁/D₂ = (p₁ p₃)1/2 ANSWER DOWNLOAD EXAMIANS APP
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