Q1. With reference to centrifugal pumps and pumping systems.
A) Under what conditions, a centrifugal pump require a priming device for pump to operate normally? (6)
B) Draw a neat graph and explain and the performance curves of a centrifugal pump. (10)
Q5. A. Sketch a simple cross section through a single stage centrifugal pump with a fully shrouded single entry impeller, name the components of the pump and indicate the direction of fluid flow. B. Describe: - i. The function of the impeller and how suction is created by it; ii. The function of the volute casing. iii. State the material of each component of the pump. C. State the suction lift that may be expected.; D. State why some centrifugal pumps have: - A double volute casing; (ii) A diffuser ring
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