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Notches and Weirs MCQs
The discharge over a rectangular weir is calculated using the formula
5. The discharge over a rectangular weir is calculated using the formula:
- Q = kH^n
- Q = Cd × A × √2g × H^3/2
- Q = A × V
- Q = Cd × A × H^2
Answer: B) Q = Cd × A × √2g × H^3/2
Explanation:
The discharge over a rectangular weir is calculated using the Francis formula, Q = Cd × A × √2g × H^3/2, where Cd is the coefficient of discharge, A is the cross-sectional area of flow, g is the acceleration due to gravity, and H is the head of water above the weir crest.