Refer to the drawing of an elevated centrifugal pump taking suction from the bottom of an open storage tank containing water at 66°F (see figure below).
Assume standard atmospheric pressure.
The pump requires 4.0 feet of net positive suction head (NPSH). Assume that pump suction head loss is negligible.
If tank water level is allowed to decrease continuously, at what approximate water level will the pump begin to cavitate?
A. 34 feet
B. 29 feet
C. 21 feet
D. 16 feet
Show Answer
Answer: C
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