Question

What is the value of the uniformity coefficient in a rapid sand filter?

(a) 1

(b) 1.5

(c) 2

(d) 2.5

This question was addressed to me in an interview for internship.

I would like to ask this question from Rapid Sand Filter topic in division Filtration of Environmental Engineering

Answer 1

Right answer is (b) 1.5

To elaborate: The value of uniformity coefficient in a rapid sand filter lies between 1.2 and 1.7 and its common value is 1.5.