Sumpner’s test on transformer - Meter reading if the secondary are not in series opposition

Q.  While performing sumpner’s test on transformer, if the secondary are not in series opposition then the meter will read
- Published on 29 Oct 15

a. 0
b. Twice of the induced emf in each secondary’s
c. Equal to the induced emf in each secondary’s
d. Keep fluctuating

ANSWER: Twice of the induced emf in each secondary’s

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