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 air is delivered ________ in one revolution in case of a three lobbed rotor. Three times Two times Six times Four times Three times Two times Six times Four times ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In open cycle turbojet engines used in military aircraft, reheating the exhaust gas from the turbine by burning, more fuel is used to increase the Both (A) and (B) None of these Thrust and range of aircraft Efficiency of the engine Both (A) and (B) None of these Thrust and range of aircraft Efficiency of the engine ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines To avoid moisture troubles, the compressed air main line should Drop gradually towards the point of use Rise gradually towards the point of use Be laid vertically Be laid exactly horizontally Drop gradually towards the point of use Rise gradually towards the point of use Be laid vertically Be laid exactly horizontally ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Isothermal compression efficiency can be attained by running the compressor At zero speed At very slow speed At average speed At very high speed At zero speed At very slow speed At average speed At very high speed ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Surging is the phenomenon of Air stream not able to follow the blade contour Motion of air at sonic velocity Air stream blocking the passage Unsteady, periodic and reversed flow Air stream not able to follow the blade contour Motion of air at sonic velocity Air stream blocking the passage Unsteady, periodic and reversed flow ANSWER DOWNLOAD EXAMIANS APP
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