Compressors, Gas Turbines and Jet Engines Volumetric efficiency of a compressor decreases with ________ in compression ratio. Remain same Does not change Increase Decrease Remain same Does not change Increase Decrease ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The ratio of isentropic work to Euler work is known as Work coefficient Polytropic reaction Pressure coefficient Slip factor Work coefficient Polytropic reaction Pressure coefficient Slip factor ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Mechanical efficiency of gas turbines as compared to I.C engines is Lower Higher Same None of these Lower Higher Same None of these ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The air-fuel ratio in gas turbines is of the order of 50: 1. 30: 1 7: 1 15: 1 50: 1. 30: 1 7: 1 15: 1 ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines An air compressor may be controlled by Blow off control Throttle control Clearance control Any one of the above Blow off control Throttle control Clearance control Any one of the above ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The overall thermal efficiency of an ideal gas turbine plant is (where r = Pressure ratio) 1 - (1/r) ɣ/ɣ-1 1 - r ɣ-1 r ɣ-1 1 - (1/r) ɣ-1/ɣ 1 - (1/r) ɣ/ɣ-1 1 - r ɣ-1 r ɣ-1 1 - (1/r) ɣ-1/ɣ ANSWER DOWNLOAD EXAMIANS APP
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