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The rotating amplifiers are widely used in ____________

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The rotating amplifiers are widely used in ____________

(a) small amplified outputs

(b) large amplified outputs

(c) amplified outputs

(d) large power gain outputs

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

Question is taken from Rotating Amplifiers topic in chapter DC Generators of Electrical Machines

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Right choice is (b) large amplified outputs

The explanation: The rotating amplifiers are applicable in feedback systems giving large amplified outputs.

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