Hydraulics and Fluid Mechanics - Mechanical Engineering Questions and Answers

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Discussion :: Hydraulics and Fluid Mechanics

The discharge over a rectangular weir, considering the velocity of approach, is (where H₁ = Total height of water above the weir = H + H_a H = Height of water, over the crest of the weir, and H_a = Height of water, due to velocity of approach)

$\frac { 2} { 3 }$ C_d x L $\sqrt{2g}$ [H₁ - H_a]

$\frac { 2} { 3 }$ C_d x L $\sqrt{2g}$ [H₁^3/2 - H_a^3/2]

$\frac { 2} { 3 }$ C_d x L $\sqrt{2g}$ [H₁² - H_a²]

$\frac { 2} { 3 }$ C_d x L $\sqrt{2g}$ [H₁^5/2 - H_a^5/2]

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Answer : Option B

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