Dimensional Analysis Quiz

What is the first step in the engineers' approach to dimensional analysis?

• Calculate the Reynolds number

• Conduct an experiment

• Identify the dependent variable

• Plot the results

Which of the following is NOT an independent variable in the rough sphere example?

• Speed of the fluid

• Viscosity of the fluid

• Density of the fluid

• Drag coefficient

How do you determine the number of dimensionless numbers in a problem?

• By dividing the number of variables by the number of dimensions

• By adding the number of variables and dimensions

• By subtracting the number of dimensions from the number of variables

• By multiplying the number of variables by the number of dimensions

What is the standard dimensionless number used to describe fluid flow around a sphere?

• Viscosity index

• Reynolds number

• Drag coefficient

• Relative roughness

In the experiment, what is plotted on the vertical axis?

• Reynolds number

• Relative roughness

• Drag coefficient

• Bump height