A rectangular open channel has a width of 5 m and a bed slope of 0.001. For a uniform flow of depth 2 m, the velocity is 2 m/s. The Manning’s

Q. A rectangular open channel has a width of 5 m and a bed slope of 0.001. For a uniform flow of depth 2 m, the velocity is 2 m/s. The Manning’s roughness coefficient for the channel is

(A) 0.002        

(B) 0.017        

(C) 0.033       

(D) 0.050

Ans: 0.017