Compressors, Gas Turbines and Jet Engines The overall isothermal efficiency of the compressor is defined as the ratio of Isothermal power to the shaft power or B.P. of the motor or engine required to drive the compressor Volume of free air delivery per stroke to the swept volume of the piston Work required to compress the air isothermally to the actual work required to compress the air for the same pressure ratio Isentropic power to the power required to drive the compressor Isothermal power to the shaft power or B.P. of the motor or engine required to drive the compressor Volume of free air delivery per stroke to the swept volume of the piston Work required to compress the air isothermally to the actual work required to compress the air for the same pressure ratio Isentropic power to the power required to drive the compressor ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The ratio of isentropic work to Euler’s work is known as Compressor efficiency Isentropic efficiency Euler Pressure coefficient Compressor efficiency Isentropic efficiency Euler Pressure coefficient ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines For a two stage compressor, if index of compression for higher stage is greater than index of compression for lower stage, then the optimum pressure as compared to ideal case will Remain unaffected Decrease Other factors control it Increase Remain unaffected Decrease Other factors control it Increase ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines For perfect intercooling in a two stage compressor p₁ = p3 p₁ = p₂ p3 p₂/p₁ = p₃/p₂ p₁/p₃ = p₂/p₁ p₁ = p3 p₁ = p₂ p3 p₂/p₁ = p₃/p₂ p₁/p₃ = p₂/p₁ ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The work ratio of simple gas turbine cycle depends on Maximum cycle temperature All of these Minimum cycle temperature Pressure ratio Maximum cycle temperature All of these Minimum cycle temperature Pressure ratio ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The assumption made in two stage compression with inter-cooler is that There is no pressure drop in the inter-cooler The suction and delivery of air takes place at constant pressure The compression in both the cylinders is polytropic All of the listed here There is no pressure drop in the inter-cooler The suction and delivery of air takes place at constant pressure The compression in both the cylinders is polytropic All of the listed here ANSWER DOWNLOAD EXAMIANS APP
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