Eddy currents are induced in the pole shoes of a D.C. machine due to?
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Answer :

Eddy currents are induced in the pole shoes of a D.C. machine due to relative rotation between field and armature.
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Description : How eddy currents are generated?

Description : The eddy current loss in a dc generator is 400 W at 40 Hz frequency of reversal and constant flux density. When frequency is increased to 50 Hz., eddy current loss is :  (A) 256 W (B) 320 W (C) 500 W (D) 625 W

Answer : The eddy current loss in a dc generator is 400 W at 40 Hz frequency of reversal and constant flux density. When frequency is increased to 50 Hz., eddy current loss is : 625 W

Answer : In D.C. generators the pole shoes are fastened to the pole core by counter sunk screws.

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