Question

For a fully developed flow through a pipe, the ratio of the maximum velocity to the average velocity is

• A. 1
• B. 2
• C. $\sqrt{2}$
• D. 4

Hint:

Laminar flow: $v_{\text{max}} = 2 \times v_{\text{avg}}$

Answer 1

The Correct Option is B

In laminar flow, the parabolic profile leads to a maximum velocity twice the average velocity.