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Compressors, Gas Turbines and Jet Engines

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

Timken, Haste alloys
High alloy steel
Duralumin
Stainless steel

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Compressors, Gas Turbines and Jet Engines
The maximum propulsion efficiency of a turbojet is attained at around following speed

550 km/hr
2400 km/hr
1050 km/hr
1700 km/hr

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Compressors, Gas Turbines and Jet Engines
The absolute pressure of air at the outlet of a compressor is called

None of the listed here
Discharge pressure
Back pressure
Critical pressure

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

p₃/p₁ = p₄/p₂
p₁ p₂ = p₃ p₄
p₂/p₁ = p₃/p₂ = p₄/p₃
p₁ p₃ = p₂ p₄

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Compressors, Gas Turbines and Jet Engines
The temperature of air at the beginning of the compression stroke is ________ the atmospheric temperature.

None of these
Equal to
Less than
More than

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

None of the listed here
More than
Less than
Equal to

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