Question

Why would a submerged pipe outlet be laid inclined?

(a) To Provide Proper Exit Gradient

(b) To Maintain Proper Hydraulic Jump

(c) To Increase Silt Conductivity

(d) To Increase the Discharge Capacity

I had been asked this question during an online exam.

My enquiry is from Regulation Modules in section Regulation Modules and Canal Structure of Irrigation Engineering

Answer 1

Right answer is (c) To Increase Silt Conductivity

To explain: Generally the diameter of the pipe varies from 10 to 30 cm. They are generally laid in concrete and fixed horizontally. They are also laid sloping upwards by depressing the upstream end of the pipe so as to increase the silt conductivity.