Question

With the increase in speed of the surface tension, the waves bleed of ________

(a) Zero frequency

(b) High frequency

(c) Low frequency

(d) Equal to one

This question was posed to me during an online interview.

Asked question is from Types of Hydraulic Jumps in chapter Non Uniform Flow in Channels of Fluid Mechanics

Answer 1

The correct option is (b) High frequency

The best explanation: With the increase in speed of the surface tension, the waves bleed of High frequency. It makes an undular jump into a dominant form. The flow depth is just enough that the surface tension can be no longer neglected.