Q Put a Circle around the CORRECT Answer. 1- If the secondary open drain collects water flow from 31 Tile Drains from each : and water flow rate of each Tile Drain, Qrile = 400 (m³/d). The flow rate of the Secondary Open Dra its end Qopen equals: (a) 0.2 (m³/s) (b) 0.278 (m³/s) (c) 0.287 (m³/s) 2- Given: * the longitudinal slope of bed level of open drain, So = 0.000225 * Manning's coefficient, n = 0.025 {(s/m(1/3)} * Hydraulic radius R = 0.35 (m) Flow velocity in open drain equals: (a) 0.4 (m/s) (b) 0.35 (m/s) (c) 0.3 (m/s) 3- Given: *Flow rate in secondary open drain at its end is Qopen = 0.287 (m³/s). * Flow velocity in secondary open drain is v=0.3 (m/s) * Depth of water in secondary open drain at its end y *Bed width of the drain at its end is B. (y = B) * Side slope of drain Z=1.5 (a) y = 0.8 (m) (b) y = 0.75 (m) (c) y =0.62 (m) OC

2. A welded iron industrial wastewater discharge pipe made of concrete (n = 0.014) Water flow Inside the pipe is uniform and half full (y=d/2,d=pipe diameter). If So=0,00035 and Q=2,25 m^3/s, find the diameter of the pipe!

Hi, please could someone show me how U2 = 1.98m/s. This is the correct answer but i've tried a few methods and can't quite get there! Any notes on the method alongside calculation would be great :) The two pipes are parallel, Kexit =1 for pipe 1 and pipe 2, entry losses can be ignored.

Quo Put a Circle around the CORRECT Answer 1- Given: *Length of Secondary open drain Lopen = 2400 (m). *Tile Drains Spacing, S = 80 (m). * Flow Rate of Secondary Open Drain, Qopen = 5580 (m³/d). (a) Qrile 200 (m³/s) (b)QTile = 300 (m³/s) (c) Qrile = 186 (m³/s) 2- Given: * Effective depth of the impermeable layer below Tile Drain level, *de = 12 (m). *Hydraulic conductivity of soil layer located above Tile Drains level, Ka = 6 (m/d). * Hydraulic conductivity of soil layer located below Tile Drains level, Kb = 0.5 (m/d). * Maximum height of W.T. above Tile Drains level at mid-distance Ho = 0.8 (m) *Drain Spacing S = 45 (m) Drainage Coefficient R. is: (a) 0.001 (m of water/d) (b) 0.015 (m of water/d) (c) 0.026(m of water/d) P-12 3- An agricultural farm is cultivated by mixed crops. There is no drainage system in farm. The available data are: *Leaching Requirements of the farm, LR = 37% *Depth of Irrigation Water, (dw)i = 0.081 (m of water/Irrigation) *Depth of drained water (dw) is: (a) 1…