A centrifugal fire water pump takes suction from an open storage tank and discharges through a fire hose ___

A centrifugal fire water pump takes suction from an open storage tank and discharges through a fire hose.

Which one of the following will cause the pump to operate at shutoff head?

A. The fire hose nozzle is raised to an elevation that prevents any flow.
B. Suction temperature is increased to the point that gas binding occurs.
C. Pump speed is adjusted to the value at which cavitation occurs.
D. Suction pressure is adjusted until available net positive suction head is reduced to zero feet.

Show Answer

Answer: A

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