Question

A transformer has a primary voltage of 480 volts and a secondary voltage of 120 volts. if the primary windings have 700 turns, how many turns are in the secondary windings? (voltage and number of turns are directly proportional.)

Answer 1

Number of turns in the secondary= 175

Step-by-step explanation:

for a transformer

Es/ Ep= Ns/ Np

Es= secondary voltage=120 V

Ep= primary voltage=480 V

Ns= number of turns in the secondary

Np= Number of turns in the primary=700

so 120/480=Ns/700

Ns= 175