Question

Subcritical depth occurs when_________

(a) Actual water depth > Critical depth

(b) Actual water depth < Critical depth

(c) Actual water depth = Critical depth

(d) They are independent

The question was asked in unit test.

I need to ask this question from Characteristics of Surface Profiles in portion Non Uniform Flow in Channels of Fluid Mechanics

Answer 1

The correct choice is (a) Actual water depth > Critical depth

The explanation: Subcritical depth occurs when actual water depth is greater than the critical depth. It is dominated by gravitational forces and behaves in a slow and stable way.