If a pump has a direction of discharge that is partly radial and partly axial, what type of pump is it?

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A pump with a direction of discharge that is partly radial and partly axial is classified as a mixed flow pump. In mixed flow pumps, the fluid is propelled in a manner that combines both radial and axial components as it moves through the pump. This design allows for a more versatile performance in applications where both high pressure and flow rate are needed.

Centrifugal pumps primarily produce a radial discharge, where the flow moves outward from the center of the impeller, and axial pumps operate by moving the fluid parallel to the pump shaft, typically with a pure axial flow. Positive-displacement pumps do not fit this description either, as they work by trapping a fixed volume of fluid and displacing it through the discharge, rather than utilizing flow patterns like radial or axial. Therefore, the distinctive characteristic of a mixed flow pump is its ability to effectively combine these two flow types, making it the correct answer.

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