Tag: #doubleentryimpeller
-

EK General Jul 2023 (Q4)
With reference to centrifugal pumps: (a) Sketch a double entry impeller showing directions of flow (3) (b) Explain why double entry impellers are fitted (2) (c) Explain, with the aid of a Head versus Flow diagram, why a two speed pump is preferable to throttling where high and low capacities are demanded for a large…
-

EK General Dec 2020 (Q5)
With reference to centrifugal pumps: (a) sketch a double entry impeller showing directions of flow; (3) (b) explain why double entry impellers are fitted; (2) (c) explain, with the aid of a Head versus Flow diagram, why a two speed pump is preferable to throttling where high and low capacities are demanded for a large…
-

EK General Oct 2019 (Q5)
With reference to centrifugal pumps: (a) Explain the operating principle of a centrifugal pump and state why it is unnecessary to fit a relief valve to it; (2) (b) Explain why some pumps have a double entry impeller; (2) (c) Describe a routine overhaul of a centrifugal pump, stating the inspections, measurements and possible replacement…
