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Which part of centrifugal well pumps act as a self priming device?

(a) Delivery pipe

(b) Foot valve

(c) Strainer

(d) Check valve

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This interesting question is from Well Pump topic in portion Pumps and Pumping of Environmental Engineering

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Best answer
The correct answer is (c) Strainer

The explanation: When the pump is stopped, the foot valve prevents the water from leaving the pump. Therefore, it acts as a self priming device.

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