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Compressors, Gas Turbines and Jet Engines

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
For slow speed large capacity compressor, following type of valve will be best suited

Mechanical valve of the Corliss, sleeve, rotary or semi rotary type
Any of the above
Disc or feather type
Poppet valve

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Compressors, Gas Turbines and Jet Engines
Separators are generally used in air compressor installations

Between the after-cooler and receiver
After the inter-cooler
Before first stage suction
Before the inter-cooler

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Compressors, Gas Turbines and Jet Engines
Atmospheric pressure is 1.03 kg/cm and vapour pressure is 0.03 kg/cm. The air pressure will be

1.03 kg/cm²
1.06 kg/cm²
1.00 kg/cm²
0.53 kg/cm²

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Compressors, Gas Turbines and Jet Engines
As the turbine inlet temperature increases, the thermal efficiency of gas turbine for the optimum pressure ratio

Decreases
First increases and then decreases
Increases
Remain same

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Compressors, Gas Turbines and Jet Engines
A large clearance volume in a reciprocating compressor results in

Increased volume flow rate
Lower delivery pressure
Reduced volume flow rate
Lower suction pressure

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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