SSC SSC JE Civil 2025 Mock Test Series (Paper 1 & Paper 2) Fluid Mechanics Open Channel Flow Weirs and Notches
If H1 is the height of the liquid surface above the orifice top, H2 is the height of the liquid surface above the orifice bottom, b is the width of the orifice and Cd is the coefficient of discharge, what would be the expression to calculate the discharge denoted by Q?
1
\(Q = \frac{1}{2} \times 3{C_d}b\sqrt {2g} (H_2^{3/2} - H_1^{3/2})\)
2
\(Q = \frac{1}{2} \times 3{C_d}b\sqrt {2g} (H_1^{3/2} - H_2^{3/2})\)
3
\(Q = \frac{1}{3} \times 2{C_d}b\sqrt {2g} (H_1^{3/2} - H_2^{3/2})\)
4
\(Q = \frac{1}{3} \times 2{C_d}b\sqrt {2g} (H_2^{3/2} - H_1^{3/2})\)