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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The thermal efficiency of a gas turbine as compared to a diesel plant is

More
Same
Less
Depends on other factors

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Compressors, Gas Turbines and Jet Engines
The compressor performance at higher altitude compared to sea level will be

Dependent on other factors
Higher
Same
Lower

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Compressors, Gas Turbines and Jet Engines
For maximum work, the reheating should be done to an intermediate pressure of (Where p₁ = Maximum pressure, and p₂ = Minimum pressure)

(p₁ + p₂)/2
p₁/p₂
(p₁ - p₂)/2
p₁ p₂

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Compressors, Gas Turbines and Jet Engines
For supplying intermittent small quantity of air at high pressure, following compressor is best suited

Centrifugal
Axial
Screw
Reciprocating

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Compressors, Gas Turbines and Jet Engines
A gas turbine used in air craft should have

High h.p. and low weight
Small frontal area and high h.p.
Low weight and small frontal area
High speed and high h.p.

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

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

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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