Compressors, Gas Turbines and Jet Engines Volumetric efficiency of air compressors is of the order of 60 - 70% 40 - 50% 20 - 30% 70 - 90% 60 - 70% 40 - 50% 20 - 30% 70 - 90% ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Gas turbine as compared to internal combustion engine All of the listed here Can be driven at a very high speed Produces uniform torque Has more efficiency All of the listed here Can be driven at a very high speed Produces uniform torque Has more efficiency ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Mining industry usually employs following motive power Compressed air Petrol engine Diesel engine C. electric motor Compressed air Petrol engine Diesel engine C. electric motor ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines For maximum work, the reheating should be done to an intermediate pressure of (Where p₁ = Maximum pressure, and p₂ = Minimum pressure) p₁ p₂ p₁/p₂ (p₁ - p₂)/2 (p₁ + p₂)/2 p₁ p₂ p₁/p₂ (p₁ - p₂)/2 (p₁ + p₂)/2 ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The thermodynamic efficiency of rotary compressor is based on Polytropic compression Isothermal compression Adiabatic compression Isentropic compression Polytropic compression Isothermal compression Adiabatic compression Isentropic compression 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 Vi = Vo Vt > Vo V = Uo U < Vo Vi = Vo Vt > Vo V = Uo U < Vo ANSWER DOWNLOAD EXAMIANS APP
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