Transformer MCQ Part 6

A 480/1100 V transformer absorbs 250 W. What is the active component of current:

1. 0.22 A
2. 0.38 A
3. 0.487 A
4. 0.52 A

Correct answer: 4. 0.52 A

Solution: Active components of current = I_W = W₀/V₁ = 250/480 = 0.52 A