Compressors, Gas Turbines and Jet Engines There is a certain pressure ratio (optimum) for a gas turbine at which its thermal efficiency is maximum. With increase in turbine temperature, the value of pressure ratio for the peak efficiency would Increase None of these Remain same Decrease Increase None of these Remain same Decrease ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The thermodynamic efficiency of rotary compressor is based on Adiabatic compression Isentropic compression Polytropic compression Isothermal compression Adiabatic compression Isentropic compression Polytropic compression Isothermal compression ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Diffuser in a compressor is used to Convert pressure energy into kinetic energy Make the flow streamline Convert kinetic energy into pressure energy Increase velocity Convert pressure energy into kinetic energy Make the flow streamline Convert kinetic energy into pressure energy Increase velocity ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The weight per horse power ratio for gas in Turbine as compared to I.C. engine and steam turbine is Higher None of these Lower Same Higher None of these Lower Same ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The air-fuel ratio in gas turbines is of the order of 15: 1 7: 1 30: 1 50: 1. 15: 1 7: 1 30: 1 50: 1. ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The gas in cooling chamber of a closed cycle gas turbine is cooled at Constant pressure None of the listed here Constant volume Constant temperature Constant pressure None of the listed here Constant volume Constant temperature ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS