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Project title DC motor energy lossFeatured science projectScience project video
Difficulty Level High school
Project page  Click here to view this science project

This experiment was conducted to find the amount of energy lost due to friction in DC motors. The testing was done using 30 watt, 50 watt, 70 watt and 100 watt DC motors. 

Instructions preview
1. For this science project, the independent variable is the rating of the DC motor used – 30 watt, 50 watt, 70 watt and 100 watt. The dependent variable is the energy lost due to friction in the DC motor. This is determined by measuring the voltage, current and time taken for the motor to stop after the power is turned off. The constants (control variables) are the size of the power supply and the type of DC motor used. 2. The experiment is done by selecting 4 different ratings of DC motors from the same series and manufacturer. .....
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