Over Exited Alternator

When alternator is over exited, the power factor will be
a. Lagging
b. Leading
c. Zero

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  • Jan 22nd, 2016

b. Leading

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  • Jan 31st, 2016

It is lagging. When the alternator runs at lagging power factor, the armature reaction demagnetize the main field flux. To compensate the extra magnetic field required so that the alternator is Overexcited

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Dipti Ranjan

  • Mar 7th, 2016

Pf is lagging because A.R is demagnetizing.

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