Assertion: electric fan's motor | /r/Synonym | ac commutator motors
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Source sentences:
text: The universal and repulsion motors are part of a class of motors known as AC commutator motors, which also includes the following now largely obsolete motor types: Single-phase – straight and compensated series motors, railway motor; three-phase – various repulsion motor types, brush-shifting series motor, brush-shifting polyphase shunt or Schrage motor, Fynn-Weichsel motor.