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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The pressure ratio for an open cycle gas turbine compared to closed cycle gas turbine of same h.p. is

Low
High
Same
Low/high depending on make and type

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Compressors, Gas Turbines and Jet Engines
The volumetric efficiency of compressor with increase in compression ratio will

Increase
Decrease
May increase or decrease depending on clearance volume
Remain same

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Compressors, Gas Turbines and Jet Engines
The axial flow compressor is preferred in aircraft gas turbines because of

None of the listed here
Low frontal area
High pressure rise
Higher thrust

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Compressors, Gas Turbines and Jet Engines
The inter-cooler pressure, for minimum work required, for a two stage reciprocating air compressor, is given by (where p₁ = Intake pressure of air, p₂ = Inter-cooler pressure, and p₃ = Delivery pressure of air)

p₂ = p₁ × p₃
p₂ = p₁ × p₂
p₂ = p₁/p₃
p₂ = p₃/p₁

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Compressors, Gas Turbines and Jet Engines
A jet engine has

Propeller in front
Propeller at back
Propeller on the top
No propeller

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Compressors, Gas Turbines and Jet Engines
Rotary compressors are used for delivering

Small quantities of air at low pressures
Large quantities of air at high pressures
Large quantities of air at low pressures
Small quantities of air at high pressures

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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