Q1.
(a) 1. Answer all of the following : trapezoidal channel has bed A slope = 1.5, width = 4 m, side bed slope = 0.01 and Manning's n = 0.012. If it is carrying a discharge = 40 m3/s at normal depth = 1.5 m, then classify its slope by computing critical depth. \n What is centrifugal pump efficiency?
(b) Describe the important factors influencing centrifugal pump efficiency. \overline4 What is precipitation in hydrology?
(c) briefly Describe forms 0t precipitation. \n4 Design a circular primary settling tank
(d) for a sewage treatment plant. Given data are: 4 Flow rate = 27000 m3/d Retention time = 2.5 hr Weir length = 30 m Total number of tanks = 2 Surface loading rate = 30 m3/m2/d \n A 500 mm diameter sewer pipe has
(e) been installed with an invert slope of 0.008. Determine the capacity of flow when the sewer pipe is flowing half-full. The number of sewer pipes used is 2. roughness coefficient is Manning's 0.012. Assume that flow in the sewer pipe is uniform.