Question

Given the input current 15a and the input voltage of 100 v for a step-up transformer having 90% efficiency, find the output power and the voltage in the secondary if the output current is 3a

Answer 1

Power = v (I)

power in. = powet out.

By cosidering 10% loss over the transformer.

90% V in.(I in.)= vi

15(100) - 150(10% loss of energy)= v out. (3)

V out. = 1350/3

V out. = 450v ; I out. = 3a

Therfore Power out. = 450(3)

Power out. = 1350 Kw