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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
In gas turbines, high thermal efficiency is obtained in

Open cycle
Closed/open depending on other considerations
Closed cycle
Closed cycle & Open cycle

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

Start-stop motor
Relief valve
Constant speed unloader
Variable speed

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

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Compressors, Gas Turbines and Jet Engines
The compressor efficiency is the

Isothermal H.P./shaft H.R
Total output/air input
Isothermal H.P/indicated H.R
Compression work/motor input

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Compressors, Gas Turbines and Jet Engines
A closed cycle gas turbine consists of a

Cooling chamber
Heating chamber
All of these
Compressor

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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
First increases and then decreases
Increases
Decreases

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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