The primary winding of an electric train transformer has 400 turns,and the secondary has 50.If the input voltage is 120 V(rms),what is the output voltage?
A)480 V
B)60 V
C)15 V
D)10 V

Question

Quizplus · Accepted Answer

The transformer equation is Vp/Vs = Np/Ns, where Vp and Vs are the primary and secondary voltages, and Np and Ns are the number of turns in the primary and secondary windings. Substituting the given values: 120/Vs = 400/50, solving for Vs gives Vs = 15 V.

The Primary Winding of an Electric Train Transformer Has 400