#generator  engine that converts mechanical energy into electrical energy by electromagnetic induction
  supertype:  #engine  motor that converts thermal energy to mechanical work
  subtype:  #alternator  #dynamo  #magneto  #turbogenerator  #aerogenerator
  part:  #brush.electrical_device  conducts current between rotating and stationary parts of a generator or motor
  part:  #rotor_coil__rotorcoil__rotor  the rotating armature of a motor or generator
  part:  #stator_coil__stator  mechanical device consisting of the stationary part of a motor or generator in or around which the rotor revolves

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