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Compressors, Gas Turbines and Jet Engines

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

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

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Compressors, Gas Turbines and Jet Engines
To avoid moisture troubles, the compressed air main line should

Be laid exactly horizontally
Drop gradually towards the point of use
Be laid vertically
Rise gradually towards the point of use

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

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

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Compressors, Gas Turbines and Jet Engines
For perfect intercooling in a two stage compressor

p₁ = p3
p₂/p₁ = p₃/p₂
p₁ = p₂ p3
p₁/p₃ = p₂/p₁

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Compressors, Gas Turbines and Jet Engines
Air-fuel ratio in a jet engine will be of the order of

0.83402777777778
0.62569444444444
2.5006944444444
0.41736111111111

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Compressors, Gas Turbines and Jet Engines
Gas turbine cycle with regenerator

Allows high compression ratio
Allows operation at very high altitudes
Decreases heat loss is exhaust
Increases thermal efficiency

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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