Water Supply & Distribution第 34 / 120 题
How many feet of vertical head are equivalent to 22 psi of water pressure?
a.About 50.8 ft
b.About 9.5 ft
c.About 45.4 ft
d.About 22 ft
解析
One psi equals 2.31 ft of head, so 22 x 2.31 = 50.8 ft. The 9.5 ft answer divides by 2.31 instead of multiplying, and 45.4 ft comes from using a rounded factor of 2.0 plus arithmetic error. Answering 22 ft ignores the conversion entirely and treats psi and feet as interchangeable.
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