Compressors, Gas Turbines and Jet Engines Reheating in gas turbine results in Decrease of thermal efficiency Decrease of work ratio Increase of work ratio Both (A) and (B) above Decrease of thermal efficiency Decrease of work ratio Increase of work ratio Both (A) and (B) above ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The indicated work per unit mass of air delivered is Not affected by clearance volume Inversely proportional to clearance volume Directly proportional to clearance volume Greatly affected by clearance volume Not affected by clearance volume Inversely proportional to clearance volume Directly proportional to clearance volume Greatly affected by clearance volume ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines There is a certain pressure ratio (optimum) for a gas turbine at which its thermal efficiency is maximum. With increase in turbine temperature, the value of pressure ratio for the peak efficiency would Decrease Increase None of these Remain same Decrease Increase None of these Remain same ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Volumetric efficiency of a compressor decreases with ________ in compression ratio. Increase Decrease Does not change Remain same Increase Decrease Does not change Remain same ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The work done per unit mass of air in compression will be least when 'n' is equal to 1.3 1.2 1 1.4 1.3 1.2 1 1.4 ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The stagnation pressure rise in a centrifugal compressor takes place In the diffuser and impeller In the impeller only In the diffuser only In the inlet guide vanes only In the diffuser and impeller In the impeller only In the diffuser only In the inlet guide vanes only ANSWER DOWNLOAD EXAMIANS APP
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