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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The ratio of the increase in pressure in rotor blades to total increase in pressure in the stage is called

Pressure coefficient
Degree of reaction
Pressure ratio
Slip factor

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Compressors, Gas Turbines and Jet Engines
In a closed cycle gas turbine, the air is compressed

Isentropically
Isothermally
None of these
Polytropically

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Compressors, Gas Turbines and Jet Engines
A 3 m³/min compressor means that it

Delivers 3 m³/ min of compressed air
Delivers 3 m³/ min of compressed air at delivery pressure
Compresses 3 m³/ min of free air
Compresses 3 m³/min of standard air

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Compressors, Gas Turbines and Jet Engines
The propulsive power of the rocket is (where v₁ = Jet velocity, and v₂ = Aircraft velocity)

(v₁ - v₂)²/2g
(v₁² -v₂²)/2g
(v₁² -v₂²)/g
(v₁ - v₂)²/g

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Compressors, Gas Turbines and Jet Engines
The thermodynamic efficiency of rotary compressor is based on

Adiabatic compression
Isentropic compression
Isothermal compression
Polytropic compression

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Compressors, Gas Turbines and Jet Engines
The volume of air delivered by the compressor is called

Swept volume
None of the listed here
Compressor capacity
Free air delivery

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