DC Motors
One D.C. motor drives another D.C. motor. The second D.C. motor when excited and driven

Does not run as a generator
Runs as a generator
Also runs as a motor comes to stop after sometime
None of these

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DC Motors
In variable speed motor

Same commutating field is needed at low speed than at high speed
None of these
A stronger commutating field is needed at low speed than at high speed
A weaker commutating field is needed at low speed than at high speed

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