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Calculate the mean hydraulic radius for a channel having 20m^2 cross sectional area and 50m of wetted perimeter.

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+1 vote
in Fluid Mechanics by (118k points)
Calculate the mean hydraulic radius for a channel having 20m^2  cross sectional area and 50m of wetted perimeter.

(a) 0.4m

(b) 0.5m

(c) 0.6m

(d) 0.7m

I got this question in quiz.

I need to ask this question from Types of Flow in Channels in portion Flow in Open Channels of Fluid Mechanics

1 Answer

+2 votes
by (362k points)
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Best answer
Correct option is (a) 0.4m

Easy explanation: Hydraulic Radius(R) = A/P

= 20/50

= 0.4m.

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