Assertion: electric motor's field | /r/AtLocation | synchronous motor
Facets:
value: by use of the same method
type: MANNER
value: from a single-phase source
type: OTHER
Source sentences:
text: In a synchronous motor, a rotating magnetic field is produced in the stator.
text: A revolving field can be produced in synchronous motors from a single-phase source by use of the same method as for single-phase induction motors.