Compressors, Gas Turbines and Jet Engines In jet propulsion power unit, the inlet duct of diverging shape is used in order to Provide robust structure Convert kinetic energy of air into pressure energy Beautify the shape Collect more air Provide robust structure Convert kinetic energy of air into pressure energy Beautify the shape Collect more air ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The performance of air compressor at high altitudes will be ________ as compared to that at sea level. None of these Higher Same Lower None of these Higher Same Lower ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Volumetric efficiency of air compressors is of the order of 40 - 50% 70 - 90% 20 - 30% 60 - 70% 40 - 50% 70 - 90% 20 - 30% 60 - 70% ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines If V, U and Vr represent the absolute velocity of fluid, velocity of blade, and relative velocity of fluid, and suffix ‘I’ and ‘o’ stand for entry and exit conditions, then in a rotary machine whose degree of reaction is unity U < Vo Vi = Vo Vt > Vo V = Uo U < Vo Vi = Vo Vt > Vo V = Uo ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Isothermal compression efficiency can be attained by running the compressor At zero speed At average speed At very slow speed At very high speed At zero speed At average speed At very slow speed At very high speed ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The air entry velocity m a rocket as compared to aircraft is Less Zero Same More Less Zero Same More ANSWER DOWNLOAD EXAMIANS APP
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