Design Engineering Theory Topics - Home Page

Calculations

 

 

1 Calculating Area

 

Area of a square and a circle

2 Mechanical advantage

 

Mechanical advantage

3 Pulley, belt drive and gear ratio

 

Pulley ratios

  • Below is a video of how to calculate gear ratios and speed calculation.

  • The formula above applies to all drive systems. For pulleys, you would use the diameter instead of number of teeth.
  • Chain and sprocket calculations will be the same as gear calculations.
  • One thing to note, in gear drive systems, the gears will spin in opposite directions as they move through the gears.

4 Graphs

 

Mean, Mode and Median

5 Ohm's law

 

Series resistor calculations

Parallel resistor calculations

 

Series resistor voltage calculations

Parallel resistor voltage calculations