Question

working of the an AC generator

Answer 1

A.C. generators or alternators operate on the same fundamental principles ofelectromagnetic induction as D.C. generators.

    Alternating voltage may be generated by rotating a coil in the magnetic field or by rotating a magnetic field within a stationary coil. The value of the voltage generated depends on-

                      the number of turns in the coil.

                      strength of the field.

                      the speed at which the coil or magnetic field rotates.
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Answer 2

The current will going in different ways then a time come when it changes their polarization, it come in 0 then restart. And this is symbol of DC ~