The primary winding of an electric train transformer has 445 turns,and the secondary has 300.If the input voltage is 118 V(rms),what is the output voltage?
A)175 V
B)53.6 V
C)79.6 V
D)144 V
E)118 V

Question

Quizplus · Accepted Answer

We can use the transformer equation V2/V1 = N2/N1, where V2 is the output voltage, V1 is the input voltage, N1 is the number of turns in the primary winding, and N2 is the number of turns in the secondary winding. Substituting the given values, we get:
V2/118 = 300/445
V2 = (300/445) * 118
V2 = 79.6 V, which is closest to choice C, 79.6 V.

The Primary Winding of an Electric Train Transformer Has 445