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.

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

Answer / kundanmalani1990

Excitaion r use to the pole r converte to the parmanet magnet so the excitation r use

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. 

Answer / vamsi

ac alternator is not a salf stator so dc supply for self
motor,dc can not produce flux.

How addressable fire systems work? Pl. send details with architect.(Loop), also send details regarding Gas system. Pl. help me.Thanks

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tell me about your project

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