In the pump horsepower calculation, what head in feet corresponds to a 40 psi differential?

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Multiple Choice

In the pump horsepower calculation, what head in feet corresponds to a 40 psi differential?

Explanation:
Head in feet is how high a column of water would have to be to exert the same pressure. In pump horsepower calculations, convert pressure in psi to hydraulic head using about 2.31 ft of head per psi for water. So a 40 psi differential equals 40 × 2.31 = 92.4 feet of head. The other numbers don’t match the given pressure: for example, 40 ft corresponds to roughly 17 psi, 60 ft to about 26 psi, and 120 ft to about 52 psi.

Head in feet is how high a column of water would have to be to exert the same pressure. In pump horsepower calculations, convert pressure in psi to hydraulic head using about 2.31 ft of head per psi for water. So a 40 psi differential equals 40 × 2.31 = 92.4 feet of head. The other numbers don’t match the given pressure: for example, 40 ft corresponds to roughly 17 psi, 60 ft to about 26 psi, and 120 ft to about 52 psi.

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