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Definition of 'back emf'

back emf in British

noun
electrical engineering
an electromagnetic force appearing in an inductive circuit in such a direction as to oppose any change of current in the circuit
Collins English Dictionary. Copyright © HarperCollins Publishers

back EMF in Electrical Engineering

(bæk i ɛm ɛf) or back electromotive force
noun
(Electrical engineering: Electrical power, Motor or generator)
Back EMF is the system in the coil of an electric motor that opposes the current flowing through the coil, when the armature rotates.
When the speed varies, the winding characteristics may fluctuate, resulting in variation of back EMF.
At high speeds the traction motor armatures are rotating rapidly and have a high back EMF.
Back EMF is the system in the coil of an electric motor that opposes the current flowing through the coil, when the armature rotates.
Collins English Dictionary. Copyright © HarperCollins Publishers

Nearby words of 'back emf'

  • back door
  • back down
  • back electromotive force
  • back emf
  • back emission
  • back end
  • back foot

  • All ENGLISH words that begin with 'B'

Source

Definition of back emf from the Collins English Dictionary

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