Question: An 8-inch model pump delivering water at 180F at 800 gal/min and 2400 rpm begins to cavitate when the inlet pressure and velocity are 12

An 8-inch model pump delivering water at 180°F at 800 gal/min and 2400 rpm begins to cavitate when the inlet pressure and velocity are 12 psia and 20 ft/s, respectively. Find the required NPSH of a prototype which is 4 times larger and runs at 1000 rpm.

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