Find out the voltage ratio:
A power transformer has a turn's ratio of 1:4. Find out the voltage ratio, VP, and NP If the secondary coil has 5000 turns and secondary voltage is 60 volts.
Solution:
VR = TR
VR = 1:4
VP/VS = VR = 1:4 = 1/4
VP =1/4 VS =60/4 =15 volts
TR = NP/NS =1/4
NP= ¼ NS = 5000/4 =1250 turns