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PMDC had no ________ excited machine.

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PMDC had no ________ excited machine.

(a) electrically

(b) magnetically

(c) none of the mentioned

(d) least

I have been asked this question during an online interview.

This interesting question is from Permanent Magnet DC (PMDC) Motors in portion DC Motors of Electrical Machines

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Correct choice is (a) electrically

To explain I would say: It has no electrical excitation.

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