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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
A closed gas turbine in which fuel is burnt directly in the air is not possible because of

High specific volume
Increasing gas temperature
Paucity of O2
High friction losses

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Compressors, Gas Turbines and Jet Engines
More than one stage will be preferred for reciprocating compressor if the delivery pressure is more than

10 kg/cm²
2 kg/cm²
14.7 kg/cm²
6 kg/cm²

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Compressors, Gas Turbines and Jet Engines
In a four stage compressor, if the pressure at the first and third stage is 1 bar and 16 bar, then the delivery pressure at the fourth stage will be

64 bar
1 bar
16 bar
256 bar

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Compressors, Gas Turbines and Jet Engines
The working fluid in a turbine is

In three phases
In two phases
In a single phase
In the form of air and water mixture

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Compressors, Gas Turbines and Jet Engines
For an irreversible gas turbine cycle, the efficiency and work ratio both depend on

Pressure ratio alone
Maximum cycle temperature alone
Minimum cycle temperature alone
Both pressure ratio and maximum cycle temperature

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Compressors, Gas Turbines and Jet Engines
The work done per unit mass of air in compression will be least when 'n' is equal to

1.4
1
1.2
1.3

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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