Question

The loss of pressure head for the laminar flow through pipes varies

• A. As the square of velocity
• B. Directly as the velocity
• C. As the inverse of the velocity
• D. None of the above

Answer 1

The correct option is B Directly as the velocity

$\text{As,}{h}_L=\frac{32\mu VL}{D^2}$

$\Rightarrow \text{Loss of pressure head varies directly as the velocity.}$