What does a speed sensor on a treadmill measure?
- ABelt surface temperature during operation
- BCurrent drawn by the drive motor
- CRotational speed of the front or rear roller
- DFriction coefficient of the deck surface
Correct Answer
Rotational speed of the front or rear roller
Explanation
Most treadmill speed sensors use a Hall effect sensor paired with one or more magnets mounted on the roller. As the roller turns, the magnets pass the sensor and generate a pulse signal used to calculate belt speed.