Recent questions in PPE

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In centrifugal compressor terminology, vane less space refers to the space between

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The factors which affect the volumetric efficiency of a single- stage reciprocating air compressor

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For minimum work of compression, the delivery pressure of first – stage is

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A reciprocating air compressor at sea level would deliver a greater mass of air than a

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The inlet Mach number of the flow will be

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In a multi- stage compressor

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What will be the shape of the velocity triangle at the exit of a radial bladed centrifugal impeller

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The degree of reaction in an axial flow compressor is given by

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In an axial flow compressor design, velocity diagrams are constructed from the experimental data of aerofoil cascades.

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In centrifugal compressors,. There is a tendency of increasing surge when

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Reciprocating compressors are provided with

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The volumetric efficiency of a reciprocating compressor can be enhanced by

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Which one of the following pairs of features and compressors type is not correctly matched?

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For maximum efficiency, the intermediate pressure is

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The capacity of an air compressor is specified as 3 m3/min. it means that the compressor is capable of

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The expression for total work of three stage is

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The flow in the vaneless space between the impeller exit and diffuser inlet of

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Which portion of the centrifugal compressor characteristics

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Compared to axial compressors centrifugal compressors are more suitable for

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The pressure rise in the impeller of centrifugal compressor is achieved by

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