why dc supply is given for excitation of ac alternator?how
dc can produce flux?
Answers were Sorted based on User's Feedback
Answer / coolsunil56
dc excitation is given to rotor so that it gets magnetised and gets locked with magnetic revolving field of statorand start rotating with same speed means at synchronous speed.
Is This Answer Correct ? | 3 Yes | 0 No |
Answer / k.sri405
dc can produced flux but it is constant in nature so magnet
have constant pole. that's why this pole gets locked with
the poles of stator
Is This Answer Correct ? | 2 Yes | 0 No |
Answer / kundanmalani1990
Excitaion r use to the pole r converte to the parmanet magnet so the excitation r use
Is This Answer Correct ? | 3 Yes | 3 No |
Answer / naveen
D.C Supply in alternater used for genarating magnatic field in roter ,But nature of field would be Stationary Not fluctuating, when Roter get speed from prime mover its Induced VOLTAGE AND CURRENT in Armature.
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / vamsi
ac alternator is not a salf stator so dc supply for self
motor,dc can not produce flux.
Is This Answer Correct ? | 2 Yes | 5 No |
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