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While running two compound motors in parallel, we connect equalizer ring between ___________

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While running two compound motors in parallel, we connect equalizer ring between ___________

(a) Two armatures

(b) Two fields

(c) Two load points

(d) Anywhere

I have been asked this question in an interview for internship.

The above asked question is from Parallel Operation of DC Generator topic in chapter DC Generator of DC Machines

1 Answer

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Best answer
Right answer is (a) Two armatures

Best explanation: A low-resistance equalizer connection is made directly between the two armatures before the series fields. Any emf variations of the armatures causes equalizing circulating current which do not affect the current through the series windings. Thereby the parallel operation is stabilized.

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