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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
High air-fuel ratio is used in gas turbines

To reduce the exit temperature
To increase the efficiency
To increase the output
To save fuel

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Compressors, Gas Turbines and Jet Engines
Standard air is the air at ___ and relative humidity of 36 percent.

0.1 bar and 40°C
1 bar and 40°C
0.1 bar and 20°C
1 bar and 20°C

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Compressors, Gas Turbines and Jet Engines
In a single stage, single acting reciprocating air compressor, without clearance volume, the work-done is minimum during

Isentropic compression
None of these
Isothermal compression
Polytropic compression

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Compressors, Gas Turbines and Jet Engines
What will be the volume of air at 327°C if its volume at 27°C is 1.5 m³/ mt?

18 m³/ mt.
6 m³/ mt.
1.5 m³/ mt.
3 m³/ mt.

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Compressors, Gas Turbines and Jet Engines
Free air is the air at

15°C and 1 kg/cm²
Atmospheric conditions at any specific location
0°C and standard atmospheric conditions
20°C and 1 kg/cm² and relative humidity of 36%

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Compressors, Gas Turbines and Jet Engines
The fuel consumption in gas turbines is accounted for by

Heating value
Higher heating value
Lower heating value
Higher calorific value

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