Question

If the discharging capacity of the channel is less than 0.5 cumecs then, the minimum recommended value for curve radius is _________

(a) 150 m

(b) 100 m

(c) 300 m

(d) 600 m

This question was posed to me during a job interview.

My question is taken from Canal Irrigation System topic in portion Canal Irrigation System of Irrigation Engineering

Answer 1

Correct choice is (b) 100 m

To explain: If the discharge is more, the curve should be gentler and should have more radius. When the capacity is less than 0.5 cumecs, the minimum recommended curve radius is 100m. If the discharge lies in the range 0.5-3 cumecs, the value is 150m.