Question

According to Lacey what factor is needed to have a true regime in an artificial channel?

(a) Flow is Uniform

(b) Critical Velocity = Actual Velocity

(c) No Silting or Scouring Action

(d) Lining of the Channel Bed

I got this question in homework.

I need to ask this question from Stable Channels Design  in India topic in division Sediment Transport and Irrigation Channels Design of Irrigation Engineering

Answer 1

Correct choice is (a) Flow is Uniform

The explanation is: For a channel to be in regime condition it should not have silting and scouring action. To obtain this the silt entering the channel must be carried away through the channel, by the channel section. The artificial channel to be in a regime it must have a fixed slope and fixed section. So, therefore to achieve this flow in the channel should uniform flow.