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Which of the following method is not used for regeneration?

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Which of the following method is not used for regeneration?

(a) Increasing field current

(b) Increasing armature speed

(c) Increasing supply voltage

(d) Reducing supply voltage

I have been asked this question in exam.

My query is from Braking of DC Motors in chapter DC Motors of DC Machines

1 Answer

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The correct choice is (c) Increasing supply voltage

For explanation: Regeneration is achieved by either increasing field current, increasing armature speed, or by reducing supply voltage. Increasing supply voltage is not the method which is employed in regeneration process.

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