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

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

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Compressors, Gas Turbines and Jet Engines
Which of the following statement is correct as regard to centrifugal compressors?

The flow of air is parallel to the axis of the compressor
The maximum efficiency is higher than multistage axial flow compressors
The impeller rotates at high speeds
The static pressure of air in the impeller increases in order to provide centripetal force on the air

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