Refer to the drawing of a centrifugal pump taking suction from a reservoir.
The pump is located on shore, with the eye of the pump 4 feet higher than the reservoir water level.
The pumps suction line extends 4 feet below the surface of the reservoir.
Which one of the following modifications would increase the pumps available net positive suction head?
(Assume the reservoir is at a uniform temperature and ignore any changes in suction line head loss due to friction.)
A. Raise the pump and suction line by 2 feet.
B. Lower the pump and suction line by 2 feet.
C. Lengthen the suction line to take a suction from 2 feet deeper.
D. Shorten the suction line to take a suction from 2 feet shallower.
Show Answer
Answer: B
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