Tag: #cavitation
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EK General Jul 2024 (Q5)
With reference to centrifugal pumps and pumping systems: (a) Explain, with the aid of a diagram, the distinction between Net Positive Suction Head available (NPSHa) and Net Positive Suction Head required (NPSHr) (8) (b) Explain how the NPSHa may be increased by design (2) Pumps & system Jul 2024 (Q5)
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EK General Mar 2021 (Q4)
(a) Define propeller slip, explaining how it is calculated (2) (b) State, with reasons, FOUR conditions which will affect the propeller slip (8) Propeller, shafting & thrusters Mar 2021 (Q4)
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EK General Oct 2018 (Q5)
With reference to centrifugal pumps: (a) Explain the operating principle of a centrifugal pump and why it is unnecessary to fit a relief valve to it; (4) (b) State two impeller types and which type of application they would be best suited for; (2) (c) Explain why cavitation occurs and how to possibly reduce by…
