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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The pressure ratio in gas turbines is of the order of

0.084027777777778
0.37569444444444
2.5423611111111
0.16736111111111

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Compressors, Gas Turbines and Jet Engines
Reheating in multistage expansion gas turbine results in

High thermal efficiency
Maximum work output
Reduction in compressor work
Decrease of heat loss in exhaust

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Compressors, Gas Turbines and Jet Engines
During base load operation, the best method of controlling compressor is

Constant speed unloader
Variable speed
Relief valve
Start-stop motor

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Compressors, Gas Turbines and Jet Engines
The work ratio of a gas turbine plant is defined as the ratio of

Net work output and work done by turbine
Net work output and isentropic heat drop
Net work output and heat supplied
Actual heat drop and isentropic heat drop

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Compressors, Gas Turbines and Jet Engines
The pressure ratio for an open cycle gas turbine compared to closed cycle gas turbine of same h.p. is

Low
Low/high depending on make and type
High
Same

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Compressors, Gas Turbines and Jet Engines
Gas turbine as compared to steam turbine

Has compressor and combustion chamber
All of these
Has less efficiency
Requires less space for installation

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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