• Card 6 / 41: How high can a 5 hP pump move 5 gal/min of water in Earth's gravity if there are no frictional losses?
    A) 1.2 m
    B) 12 m
    C) 120 m
    D) 1200 m

    Answer:
    C) 120 m

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Explanation:

5 hp = 3.67 kW. 5 gal/min = 0.315 kg/s for water. h = 3670 kW/(0.315 kg/s x 9.8 m/s2). In most situations the frictional or head losses would be significant and the pump would not be able to achieve that height.

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Fluid Mechanics ME201

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Attribution:  Stephanie Redfern and Tuan Dinh. Fluid Mechanics. The Saylor Academy 2014, http://www.saylor.org/courses/me201/
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