The critical flow condition in a channel is given by ____________.
[Note: $\alpha$ - kinetic energy correction factor; $Q$ - discharge; $A_c$ - cross-sectional area of flow at critical flow condition; $T_c$ - top width of flow at critical flow condition; $g$ - acceleration due to gravity]
- $\frac{\alpha Q^2}{g}=\frac{A_c^3}{T_c}$
- $\frac{\alpha Q}{g}=\frac{A_c^3}{T_C^2}$
- $\frac{\alpha Q^2}{g}=\frac{A_c^3}{T_c^2}$
- $\frac{\alpha Q}{g}=\frac{A_c^3}{T_c}$