Compressors, Gas Turbines and Jet Engines A centrifugal compressor works on the principle of Conversion of pressure energy into kinetic energy Centripetal action Conversion of kinetic energy into pressure energy Generating pressure directly Conversion of pressure energy into kinetic energy Centripetal action Conversion of kinetic energy into pressure energy Generating pressure directly ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines For minimum work in multistage compression, assuming same index of compression in all stages Work done in all stages should be equal Work done in subsequent stages should increase Work done in subsequent stages should decrease Work done in first stage should be more Work done in all stages should be equal Work done in subsequent stages should increase Work done in subsequent stages should decrease Work done in first stage should be more ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines High air-fuel ratio in gas turbines Increases power output Improves thermal efficiency Do not damage turbine blades Reduces exhaust temperature Increases power output Improves thermal efficiency Do not damage turbine blades Reduces exhaust temperature ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Reheating in gas turbine results in Both (A) and (B) above Decrease of thermal efficiency Increase of work ratio Decrease of work ratio Both (A) and (B) above Decrease of thermal efficiency Increase of work ratio Decrease of work ratio ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines For slow speed large capacity compressor, following type of valve will be best suited Any of the above Poppet valve Disc or feather type Mechanical valve of the Corliss, sleeve, rotary or semi rotary type Any of the above Poppet valve Disc or feather type Mechanical valve of the Corliss, sleeve, rotary or semi rotary type ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In the aircraft propellers Propulsive matter is ejected from within the propelled body The propulsive matter is caused to flow around the propelled body All of these Its functioning does not depend on presence of air Propulsive matter is ejected from within the propelled body The propulsive matter is caused to flow around the propelled body All of these Its functioning does not depend on presence of air ANSWER DOWNLOAD EXAMIANS APP
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