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How initially voltage build up in an alternator by residual magnetism?

Answer:

The residual flux will help the phenomenon of changing flux. So that emf generation takes place.

Contributor:

Prakashmahi

First answer by Prakashmahi. Last edit by Prakashmahi. Contributor trust: 7 [recommend contributor ]. Question popularity: 11 [recommend question].

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Can a shunt generator build up its voltage without residual magnetism?
no. It must be magnetically excited. However, residual flux is everywhere in minute amounts within ferrous materials, so it will be an extremely unlikely problem.
How the doubly fed induction generator build up voltage?
If a self-excited generator lost all its residual magnetism, can it build up an output voltage?
Why alternator not putting out voltage?
It's either been overloaded trying to charge a dead battery and fried itself, or there may be a burnt out fuse. Check connections and have the battery tested.
What are typical alternator voltages?
13-15 volts
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