Definition of 'back emf'
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
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Definition of back emf from the
Collins English Dictionary
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