The primary winding of an electric train transformer has 400 turns and the secondary has 50. If the input voltage is 120V(rms) what is the output voltage?
A) 15 V (rms)
B) 30 V (rms)
C) 60 V (rms)
D) 2.4 V (rms)
E) 960 V (rms)

Question

Quizplus · Accepted Answer

The output voltage can be calculated using the transformer equation $ V_{out} = V_{in} \times \frac{N_{secondary}}{N_{primary}} $, where $ V_{in} = 120V $, $ N_{primary} = 400 $ turns, and $ N_{secondary} = 50 $ turns. Plugging in the values, $ V_{out} = 120V \times \frac{50}{400} = 15V $.

The Primary Winding of an Electric Train Transformer Has 400