Assertion: motor's armature | /r/HasProperty | electromagnet
Facets:
Source sentences:
text: The armature (or rotor) is an electromagnet.
text: In the above diagram, you can see two magnets in the motor: The armature (or rotor) is an electromagnet, while the field magnet is a permanent magnet (the field magnet could be an electromagnet as well, but in most small motors it isn't in order to save power).