Draw the equivalent circuit for a single-phase transformer with all the components referred to the primary side. Give a brief description of what each circuit component represents, and indicate how the secondary voltage and current are subsequently calculated from the primary side values.

Assume a single phase transformer with primary and secondary winding. Explain what would happen if a third winding with a constant DC voltage would be added to the same magnetic circuit. ...

A voltage transformer in Figure 8 has 1,500 turns of wire on its primary winding and 500 turns of wire for its secondary winding. What will be the turns ratio, a of the transformer. If 240 volts is applied to the primary winding, what will be the resulting secondary voltage. And if a 400 n resistor is connected to the secondary winding, what are the values of current Is and Ip. primary Vp Transformer Core NF Ns Figure 8 secondary Vs

formula for determining the power of a single-phase transformer