Investigating Friction Loss in DC Motors
Hard
We're going to investigate how the power and size of a DC motor affects the amount of energy lost due to friction. We'll measure the voltage, current, and time taken for the motor to stop after the power is turned off.
Hypothesis
The hypothesis is that friction loss in a DC motor will increase as the power and size of the motor is increased.
Method & Materials
You will select four different ratings of DC motors from the same series and manufacturer. You will measure the input current and DC voltage at the motor input. You will calculate the power supplied to the motor and switch off the power. You will start a stopwatch and record the time needed for the motor to stop.
You will need a DC 24V, 500W power supply, a DC 24V, 30W servomotor, a DC 24V, 50W servomotor, a DC 24V, 70W servomotor, a DC 24V, 100W servomotor, a multi meter, an ammeter, and a stopwatch.
Results
Our experiment showed that as the motor rating and size increases, the amount of friction power increases.
Why do this project?
This science project is interesting because it allows us to explore how the power and size of a DC motor affects the amount of energy lost due to friction.
Also Consider
Consider repeating the experiment to compare the efficiency of motors. Consider repeating the experiment using AC motors.
Full project details
You can find additional information and details for this science fair project here. Have fun exploring!Related videos
Hey there! Here are some awesome videos about this science project that we think you'll really like. They're not only super fun, but they'll also help you learn more about the science behind the project. So sit back, relax, and get ready to have some fun!!
Share this Science Project:
Related Science Fair Project Ideas
Have you ever wanted to defy gravity? With this experiment, you can! Learn how to make a lifter that will levitate using the Biefeld-Brown effect.
Hard
Find out how propeller size affects the thrust produced with this fun experiment!
Hard
Can a magnetic field slow down the rate of water flow? Let's find out!
Hard
Share this Science Project: