Compressors, Gas Turbines and Jet Engines The efficiency of jet engine is Higher at high speed Lower at low speed Same at all altitudes Higher at high altitudes Higher at high speed Lower at low speed Same at all altitudes Higher at high altitudes ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The clearance volume of the air compressor is kept minimum because 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 It results in minimum work 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 Decrease continuously Increase first at fast rate and then slow Increase first at slow rate and then fast First increase, reach maximum and then decrease Decrease continuously Increase first at fast rate and then slow 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 Mechanical efficiency of gas turbines as compared to I.C engines is Same None of these Lower Higher Same None of these Lower Higher ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The mass of gas turbine per kW developed is about ________ as that of an I.C. engine. One sixth One fourth One-half Same One sixth One fourth One-half Same ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Pick up the correct statement Large gas turbines use radial inflow turbines Gas turbine's blade will appear as impulse section at the hub and as a reaction section at tip Gas turbines have their blades similar to steam turbine Gas turbines use both air and liquid cooling Large gas turbines use radial inflow turbines Gas turbine's blade will appear as impulse section at the hub and as a reaction section at tip Gas turbines have their blades similar to steam turbine Gas turbines use both air and liquid cooling ANSWER DOWNLOAD EXAMIANS APP
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