What happens when ac supply is given as excitation voltage instead of dc suppl

What happens when ac supply is given as excitation voltage instead of dc
supply

Question Posted / avidchanb4u

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What happens when ac supply is given as excitation voltage instead of dc supply ..

Answer / k.prakashchandra

You can apply only single or two phase supply to the field
and there will be induced voltage in armature like a
transformer.The dc supply is given to create north and south
magnetic poles in the field.

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