Compressors, Gas Turbines and Jet Engines The efficiency of roots blower ________ with the increase in pressure ratio. Decreases Does not change None of these Increases Decreases Does not change None of these Increases ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Volumetric efficiency of a compressor without clearance volume Decreases with increase in compression ratio May increase/decrease depending on compressor capacity Increases with increase in compression ratio Is not dependent upon compression ratio Decreases with increase in compression ratio May increase/decrease depending on compressor capacity Increases with increase in compression ratio Is not dependent upon compression ratio ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The assumption made in two stage compression with inter-cooler is that All of the listed here The compression in both the cylinders is polytropic There is no pressure drop in the inter-cooler The suction and delivery of air takes place at constant pressure All of the listed here The compression in both the cylinders is polytropic There is no pressure drop in the inter-cooler The suction and delivery of air takes place at constant pressure ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines A turboprop is preferred to turbojet because It can fly at supersonic speeds It has high propulsive efficiency at high speeds It has high power for take off It can fly at high elevations It can fly at supersonic speeds It has high propulsive efficiency at high speeds It has high power for take off It can fly at high elevations ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Reheating in multistage expansion gas turbine results in Maximum work output Reduction in compressor work Decrease of heat loss in exhaust High thermal efficiency Maximum work output Reduction in compressor work Decrease of heat loss in exhaust High thermal efficiency ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Volumetric efficiency is The ratio of stroke volume to clearance volume The ratio of the air actually delivered to the amount of piston displacement Index of compressor performance Reciprocal of compression ratio The ratio of stroke volume to clearance volume The ratio of the air actually delivered to the amount of piston displacement Index of compressor performance Reciprocal of compression ratio ANSWER DOWNLOAD EXAMIANS APP
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