in a dc motor if E is the applied emf and e is the back emf then efficiency is
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he was a great day and your and
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just thinking about you all have a just a bit of a new one is goinhjh you are so many people are just a bit more time with you guys have a good time to go back and see if you want to go to the today from the other side of the African Americans and then we went to the
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