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/ɣ-1 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 ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines The work-done on a compressor will be minimum if air is taken from A source of high temperature air The atmosphere A source at 0° C A source of low temperature air A source of high temperature air The atmosphere A source at 0° C A source of low temperature air ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines In a jet propulsion unit, the products of combustion after passing through the gas turbine are discharged into Vacuum Discharge nozzle Back to the compressor Atmosphere Vacuum Discharge nozzle Back to the compressor Atmosphere ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Work ratio of a gas turbine plant is ratio of Net work output and work done by turbine Work done by turbine and net work output Net work output and heat supplied Work done by turbine and heat supplied Net work output and work done by turbine Work done by turbine and net work output Net work output and heat supplied Work done by turbine and heat supplied ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Water is injected in gas turbine cycle to Control temperature Control fire hazards Control output of turbine Increase efficiency Control temperature Control fire hazards Control output of turbine Increase efficiency ANSWER DOWNLOAD EXAMIANS APP
Compressors, Gas Turbines and Jet Engines Gas turbine cycle with regenerator Increases thermal efficiency Allows operation at very high altitudes Allows high compression ratio Decreases heat loss is exhaust Increases thermal efficiency Allows operation at very high altitudes Allows high compression ratio Decreases heat loss is exhaust ANSWER DOWNLOAD EXAMIANS APP
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