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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
For speed above 3000 km/hour, it is more advantageous to use

Rockets
Propellers
Turbojet engine
Ramjet engine

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Compressors, Gas Turbines and Jet Engines
The clearance volume of the air compressor is kept minimum because

It allows maximum compression to be achieved
It results in minimum work
It permits isothermal compression
It greatly affects volumetric efficiency

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Compressors, Gas Turbines and Jet Engines
The absolute pressure of air at the outlet of a compressor is called

None of the listed here
Back pressure
Critical pressure
Discharge pressure

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Compressors, Gas Turbines and Jet Engines
The stagnation pressure rise in a centrifugal compressor takes place

In the inlet guide vanes only
In the diffuser and impeller
In the diffuser only
In the impeller only

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Compressors, Gas Turbines and Jet Engines
The mass of gas turbine per kW developed is about ________ as that of an I.C. engine.

One-half
Same
One sixth
One fourth

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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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