Answer to Question #318796 in Electrical Engineering for INDAY

Question

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?

Answer 1

$$\frac{V_p}{V_s}=\frac{N_p}{N_s}$$

$$V_s=V_p\frac{N_s}{N_p}\\ =12\times \frac{50}{400}=1.5\:\rm V$$