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EK-General : 2021/JUL/05 – 2018/OCT/05 – 2017/DEC/04 – 2015/MAR/02
Question
Q5. With reference to centrifugal pumps:
(a) state the operating principle of a centrifugal pump and why it is unnecessary to fit a relief valve to it; (2)
(b) State TWO impeller types, explaining which type of application EACH would be best suited for; (4)
(c) Explain why cavitation occurs, and how it is reduced by design; (4)
Asked in Year/Month/Ques No.