The primary winding of an electric train transformer has 235 turns,and the secondary has 72.If the input voltage is 191 V(rms),what is the output voltage?
A) 623 V
B) 18 V
C) 59 V
D) 345 V
E) 191 V

Question

The primary winding of an electric train transformer has 235 turns,and the secondary has 72.If the input voltage is 191 V(rms),what is the output voltage?
A) 623 V
B) 18 V
C) 59 V
D) 345 V
E) ​191 V

Quizplus · Accepted Answer

We can use the transformer equation:

V1/V2 = N1/N2

where V1 is the input voltage (191 V), V2 is the output voltage (unknown), N1 is the number of turns in the primary winding (235), and N2 is the number of turns in the secondary winding (72).

Plugging in the values:

191/V2 = 235/72

Cross-multiplying:

72 x 191 = 235 x V2

Solving for V2:

V2 = (72 x 191) / 235

V2 ≈ 58.6 V

Therefore, the output voltage is approximately 59 V, which corresponds to choice C.

The Primary Winding of an Electric Train Transformer Has 235