Question

When So is less than zero, it is called________

(a) Adverse

(b) Horizontal

(c) Critical

(d) Mild

This question was posed to me in an interview for internship.

The above asked question is from Relation between Water Surface Slopes and Channel Bottom Slopes in section Non Uniform Flow in Channels of Fluid Mechanics

Answer 1

Correct choice is (a) Adverse

Explanation: When So is less than zero, it is called Adverse slopes. The flow conditions for an adverse slope is similar to that of the horizontal case in that non-existence state. Adverse slope is always negative.