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DC Motors - Armature and Field interaction?

  1. Nov 26, 2008 #1
    Decided not to use the template as I'm not asking someone to do my homework for me, please don't delete!

    Anyway, doing my A2 coursework on the workings of a DC motor. I found that when the armature and field electromagnets are connected to separate power supplies that, when it appears they should act independently, they have a major effect on each other in terms of current and potential difference.

    Pretty simply question, why? It's pretty hard Googling for an answer to this, my teacher say it's 1st - 2nd year university level but there is only so much I can do without knowing.

  2. jcsd
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