Solve this:
Q. A 60 W load is connected to the secondary of a transformer whose primary draws line voltage. If a current of 0.54 A flows in the load. What is the current in the  primary coil. Comment on the type of transformer being used?

V(l) = P(l)/ I(l) = 60/0.54 = 111.11V
On an average, the input current is half the load,
I(p) = I(l)/2 = 0.54/2 = 0.27A
Therefore it is a step down transformer.

  • 2
What are you looking for?