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Waste Water Engineering

Q1: Hydraulic mean radius is

A mean radius of sewer

B difference in heads between two points in circular pipes

C mean of radii in a pipe line of varying cross-sections

D cross-sectional area/wetted perimeter.

ANS:D - cross-sectional area/wetted perimeter.

Hydraulic mean radius (R) is defined as the cross-sectional area (A) of flow divided by the wetted perimeter (P) of the flow. Mathematically, it is represented as: R=A/P​ Therefore, the correct option is: d. cross-sectional area/wetted perimeter.

 



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