In separetly excited m/c,we excite the field by a dc source,what not with ac sou

In separetly excited m/c,we excite the field by a dc source,what not with ac source?

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In separetly excited m/c,we excite the field by a dc source,what not with ac source?..

Answer / sunil dutt

dc has uniform continous magnetic field while the ac has alternating magnetic field .so we use dc .as u know most of electrical hiost crane dc supply is used for above said reason
sunil dutt.09416468290

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In separetly excited m/c,we excite the field by a dc source,what not with ac source?..

Answer / mamun

the dc source can be found easily and also the dc voltage is
not fluctuate from battery, so the machine can start normally.

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