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The pilot exciter in dc exciters is ________

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The pilot exciter in dc exciters is ________

(a) dc shunt generator feeding field winding of mains

(b) universal motor

(c) stepper motor feeding the field winding of mains

(d) any of the mentioned

I have been asked this question during an internship interview.

Asked question is from Excitation Systems for Synchronous Machines topic in portion Synchronous Machines of Electrical Machines

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Right option is (a) dc shunt generator feeding field winding of mains

To elaborate: Pilot exciter is dc shunt generator which supplies the field of main winding.

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