3. Fluid Mechanics
Fluid Properties — Quiz
Test your understanding of fluid properties with 5 practice questions.
Practice Questions
Question 1
In fluid mechanics, kinematic viscosity is defined as:
Question 2
The Prandtl number (Pr) characterizes the relative thickness of which boundary layers?
Question 3
In laminar flow through a circular pipe, the volumetric flow rate $Q$ follows the relation $Q\propto D^4$ for constant pressure drop and fluid properties. If the pipe diameter is doubled, how does $Q$ change?
Question 4
A spherical water droplet of radius $r=1.0\times10^{-6}$ m has surface tension $\sigma=0.072$ N/m. What is the pressure difference $\Delta P$ between inside and outside of the droplet?
Question 5
For precise force transmission in a hydraulic system, the fluid must have which of these properties?