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Basic Process Knowledge (Multiple Choice) 20180505

2018-05-05View Original

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This post was last edited by HP0377 on 2018-5-5 10:46. Basic Process Knowledge (Multiple Choice Questions) 20180505. Adding balance holes to the impeller of a centrifugal pump reduces its efficiency. A. Volumetric efficiency B. Hydraulic efficiency C. Mechanical efficiency D. A+B Hint: Assume that there is internal leakage in both the front and rear sealing rings of the impeller at the balance hole, and that the fluid flowing into the impeller through the balance hole disrupts the flow of fluid inside the impeller.

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