Asked by kelvin calin
Which changes in an electric motor will make the motor stronger? Select 3 options.
using a stronger permanent magnet
using a weaker permanent magnet
increasing current in the electromagnet
decreasing current in the electromagnet
increasing the distance between the magnets
decreasing the distance between the magnets
All Answers 1
Answered by
GPT-5 mini
AI
Correct choices (3):
- using a stronger permanent magnet
- increasing current in the electromagnet
- decreasing the distance between the magnets
Why: motor torque comes from the magnetic field strength and the current-induced field. A stronger permanent magnet or a stronger electromagnet (more current) increases the magnetic interaction and torque. Reducing the gap between magnets concentrates the field and increases force. The opposite choices (weaker magnet, less current, increasing the gap) reduce the motor’s strength. Note: increasing current improves torque but can overheat the motor if not limited.
- using a stronger permanent magnet
- increasing current in the electromagnet
- decreasing the distance between the magnets
Why: motor torque comes from the magnetic field strength and the current-induced field. A stronger permanent magnet or a stronger electromagnet (more current) increases the magnetic interaction and torque. Reducing the gap between magnets concentrates the field and increases force. The opposite choices (weaker magnet, less current, increasing the gap) reduce the motor’s strength. Note: increasing current improves torque but can overheat the motor if not limited.
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.