Compressors, Gas Turbines and Jet Engines The ratio of outlet whirl velocity to blade velocity in case of centrifugal compressor is called Velocity coefficient None of these Slip factor Velocity factor Velocity coefficient None of these Slip factor Velocity factor ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The clearance volume of the air compressor is kept minimum because It results in minimum work It permits isothermal compression It allows maximum compression to be achieved It greatly affects volumetric efficiency It results in minimum work It permits isothermal compression It allows maximum compression to be achieved It greatly affects volumetric efficiency ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The specific output per kg mass flow rate of a gas turbine (having fixed efficiencies of compressor and turbine and fixed higher and lower temperature) with increase in pressure ratio will Increase first at fast rate and then slow Decrease continuously Increase first at slow rate and then fast First increase, reach maximum and then decrease Increase first at fast rate and then slow Decrease continuously Increase first at slow rate and then fast First increase, reach maximum and then decrease ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The thermal efficiency of a simple gas turbine for a given turbine inlet temperature with increase in pressure ratio First decreases and then increases Decreases First increases and then decreases Increases First decreases and then increases Decreases First increases and then decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The capacity of a compressor is expressed in kg/m³ m³/kg m³/min kg/m² kg/m³ m³/kg m³/min kg/m² 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 - (1/r) ɣ-1/ɣ r ɣ-1 1 - r ɣ-1 1 - (1/r) ɣ/ɣ-1 1 - (1/r) ɣ-1/ɣ r ɣ-1 1 - r ɣ-1 1 - (1/r) ɣ/ɣ-1 ANSWER DOWNLOAD EXAMIANS APP
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