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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
A compressor at high altitudes will require ___ power.

Less
More
Same
None of the listed here

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Compressors, Gas Turbines and Jet Engines
Diffuser in a compressor is used to

Make the flow streamline
Convert kinetic energy into pressure energy
Convert pressure energy into kinetic energy
Increase velocity

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Compressors, Gas Turbines and Jet Engines
In a double acting compressor, the air is compressed

In two cylinders on both sides of the piston
In two cylinders
In a single cylinder on both sides of the piston
In one cylinder

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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
(p₁ - p₂)/2
p₁ p₂
(p₁ + p₂)/2

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Compressors, Gas Turbines and Jet Engines
The volume of air delivered in a medium capacity air compressor per unit time is

Above 5 m³/s
0.15 to 5 m³/s
None of these
0.1 to 1.2 m³/s

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

Same
More
Less
Depends on other factors

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