Civil Engineering MCQAE Level Civil Engineering
The hydraulic radius of the most economical rectangular channel section is:
Fluid MechanicsFluid Mechanics and HydraulicsHARD
Choose the correct answer
A
y/4
B
y/3
C
y/2
D
y
Correct Answer
C. y/2
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For the best rectangular section, width b = 2y and hydraulic radius R = A/P = 2y^2/(4y) = y/2.
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