Civil Engineering MCQAE Level Civil Engineering
The most economical trapezoidal channel section has hydraulic radius equal to:
Fluid MechanicsFluid Mechanics and HydraulicsHARD
Choose the correct answer
A
y/4
B
y/2
C
y/3
D
y
Correct Answer
B. y/2
Why is this the answer?
For the best hydraulic trapezoidal section, hydraulic radius R = y/2, as in the best rectangular section.
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