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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
Losses in a centrifugal compressor are due to

All of the listed here
Diffuser losses
Inlet losses
Impeller channel losses

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Compressors, Gas Turbines and Jet Engines
The indicated work per unit mass of air delivered is

Greatly affected by clearance volume
Inversely proportional to clearance volume
Directly proportional to clearance volume
Not affected by clearance volume

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

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

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Compressors, Gas Turbines and Jet Engines
Phenomenon of choking in compressor means

Reducing mass flow rate with increase in pressure ratio
No flow of air
Fixed mass flow rate regardless of pressure ratio
Increased inclination of chord with air steam

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Compressors, Gas Turbines and Jet Engines
The thrust of a jet propulsion power unit can be increased by

Burning fuel after gas turbine
Injecting ammonia into the combustion chamber
All of these
Injecting water into the compressor

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Compressors, Gas Turbines and Jet Engines
The blades of gas turbine are made of

High alloy steel
High nickel alloy
Stainless steel
Carbon steel

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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