Correct Answer - Option 4 : Cipoletti weir
Explanation:
Different types of the weir and their discharge formulas;
Ogee weir:
\(Q = \frac{2}{3}{C_d}L\sqrt {2g} {H^{3/2}}\)
Cippoletti weir:
\(Q = \frac{2}{3}{C_d}L\sqrt {2g} {H^{3/2}}\)
Drowned weir:
\(Q = \frac{2}{3}{C_d}L\sqrt {2g} {\left( {{H_1} - {H_2}} \right)^{3/2}}\)
Triangular weir:
\(Q = \frac{8}{{15}}{C_d}L\sqrt {2g} \tan \frac{\theta }{2}{H^{5/2}}\)
Where,
Q = Discharge
L = Length of the weir
H = Depth of water
Cd = Coefficient of discharge