Compressors, Gas Turbines and Jet Engines Volumetric efficiency of a compressor decreases with ________ in compression ratio. Decrease Remain same Increase Does not change Decrease Remain same Increase Does not change 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 Greatly affected by clearance volume Inversely proportional to clearance volume Directly proportional to clearance volume Not affected by clearance volume Greatly affected by clearance volume Inversely proportional to clearance volume Directly proportional to clearance volume ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The efficiency of a jet engine is higher at Low speeds High speeds Low altitudes High altitudes Low speeds High speeds Low altitudes High altitudes ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Only rocket engines can be propelled to space because These engines can work on several fuels They have high propulsion efficiency They can generate very high thrust They are not air breathing engines These engines can work on several fuels They have high propulsion efficiency They can generate very high thrust They are not air breathing engines ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In a four stage compressor, if the pressure at the first and third stage is 1 bar and 16 bar, then the delivery pressure at the fourth stage will be 16 bar 1 bar 64 bar 256 bar 16 bar 1 bar 64 bar 256 bar 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 - 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 1 - (1/r) ɣ/ɣ-1 ANSWER DOWNLOAD EXAMIANS APP
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