Q7. A. Explain why centrifugal pumps cannot handle air or vapours to effect priming yet turbo- blowers operating on the same principle can.
B. If a vessel is fully laden, how may it be ascertained that the fire pump priming arrangements would operate satisfactorily in the ballast condition.
C. Explain a suitable method of priming suitable for a centrifugal pump.
Q5. With reference to Gear pumps used for lubricating oil transfer.
(a) Sketch and describe a gear type pump indicating the flow of fluid. (6)
(b) State the materials that gear type pump components may be manufactured from. (4)
(c) Specify THREE applications that are suitable for the employment of gear type pumps. (6)
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