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why we are giving D.C. supply to field of an alternator, why can't we give the a.C. supply
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Answer Posted / mahesh
we need a rotational magnetic field of sine wave for the
emf to be induced . if dc is given, the field that is
produced in the air gap is almost a sine wave with constant
magnitude. for ac excitation the air gap flux is not a sine
wave .
| Is This Answer Correct ? | 8 Yes | 4 No |
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