While starting a centrifugal pump, its delivery valve should be kept___________________?
Correct answer: B. Closed
- A. Opened
- B. Closed
- C. Either opened or closed; it does not make any difference
- D. Either opened or closed; depending on the fluid viscosity
Explanation
A centrifugal pump is started with its delivery valve closed because this minimizes the starting flow and the power required by the motor. Once the pump reaches operating speed, the valve is opened gradually.
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