Question

Which among the following is not an application of the Bernoulli?

(a) Sailing

(b) Flow through a venture tube

(c) Flow through a sharp-edged orifice.

(d) Closing of tap water

This question was addressed to me by my school teacher while I was bunking the class.

Asked question is from Kinetic Energy Correction and Momentum Correction Factors topic in section Viscous Flow & Turbulent Flow of Fluid Mechanics

Answer 1

Correct answer is (b) Flow through a venture tube

To explain I would say: This is mainly because, Bernoulli’s equation is applied only when the fluid is irrotational. It means that the stream lines are not supposed to intersect each other. Also, the equation does not take viscosity into account. Thus, the flow rate decreases when you close the valve.