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Compressors, Gas Turbines and Jet Engines

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

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

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

Heating chamber
Compressor
All of these
Cooling chamber

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Compressors, Gas Turbines and Jet Engines
The inlet pressure is always ___ the discharge pressure.

None of the listed here
Less than
More than
Equal to

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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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Compressors, Gas Turbines and Jet Engines
The material commonly used for air craft gas turbine is

Duralumin
Timken, Haste alloys
High alloy steel
Stainless steel

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

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

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