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While starting the centrifugal pump

Adelivery valve is kept wide open

Bdelivery valve is kept closed

Cinlet valve is kept closed

Ddelivery valve is opened slightly

Answer:

B. delivery valve is kept closed

Read Explanation:

A centrifugal pump should be started with its delivery valve closed to prevent backflow from the reservoir. The delivery valve connects the pump outlet and delivery pipe and is opened once the pump builds up its pressure to control or vary the discharge.


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