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9. Why do generators use rotating magnetic fields.
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Answer:

A rotating magnetic field is the resultant magnetic field produced by a system of coils symmetrically placed and supplied with polyphase currents.1 A rotating magnetic field can be produced by a poly-phase (two or more phases) current or by a single phase current provided that, in the latter case, two field windings are supplied and are so designed that the two resulting magnetic fields generated thereby are out of phase.

Explanation:

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Explanation:

When a stronger magnetic field passes a winding, more current is produced in the winding. ... It has three completely separate windings in which current is produced, but a single rotating magnetic field. Within the generator, there is no electrical connection between the windings.

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