Transformers

What is the secondary voltage in the given circuit?

A 13.3 V rms in phase with the primary

B 120 V rms in phase with the primary

C 13.3 V rms out of phase with the primary

D 120 V rms out of phase with the primary

ANS:C - 13.3 V rms out of phase with the primary

V1/V2= N1/N2.

40/V2 = 3/1.

V2 = 40/3.

V2 = 13.33 V OUT OF PHASE DUE TO OPPOSITE POLARITY.

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