With reference to centrifugal pumps: (a) Describe how EACH of the following improves pump performance: (i) Raising the speed of rotation; (2) (ii) Multi-staging. (2) (b) Explain the advantages of using centrifugal pumps instead of positive displacement pumps for lubricating oil circulating duties. (6)
Pumps & system
UKM Tuticorin 
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