Civil Engineering MCQJE Level Civil Engineering
For critical flow in any open-channel section, with flow area A and top width T, the general critical-flow condition is:
Fluid MechanicsCritical FlowHARD
Choose the correct answer
A
Q^2 T/(g A^3) = 1
B
Q^2 A/(g T^3) = 1
C
g Q^2 T/A^3 = 1
D
Q T/(g A) = 1
Correct Answer
A. Q^2 T/(g A^3) = 1
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At critical flow, specific energy is minimum for the given discharge. The general condition is Q^2 T/(g A^3) = 1.
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