Definition of 'back emf'
back EMF in Electrical Engineering
(bæk i ɛm ɛf) or back electromotive forcenoun
(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'
Source
Definition of back emf from the
Collins English Dictionary
5 unusual words & phrases to upgrade your World Cup 2018 banter
Impress your friends, family and colleagues with this unusual collection of football lingo.
Read more
VAR, planebae & a peng sort: July’s Words in the News
Catch up on the latest words in the news this July with Robert Groves.
Read more
Join the Collins community
All the latest wordy news, linguistic insights, offers and competitions every month.
Read more