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The preferred order of calculating the voltage regulation is ___________

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The preferred order of calculating the voltage regulation is ___________

(a) ZPF > ASA > MMF > EMF

(b) ZPF > MMF > ASA > EMF

(c) ASA > MMF > ASA > EMF

(d) EMF > ASA > ZPF > MMF

I have been asked this question during an interview.

This is a very interesting question from Voltage Regulation of an Alternator in chapter Synchronous Generators of Electrical Machines

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Right choice is (a) ZPF > ASA > MMF > EMF

To explain I would say: Emf method is least preferred over the other methods and zpf method gives the accurate results as it does not alter the values.

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