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)
Q8. The company, with which you are employed, requests that all Chief Engineer Officers prepare standing orders regarding the prevention and detection of fires in the machinery spaces. Compile such a list of recommendations to be submitted to central office. (10)
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