Transformer MCQ Part 5

A 220/1100 V transformer takes no load current of 5 A and absorbs 200 W. What is no load power factor:

  1. 0.074 lag
  2. 0.181 lag
  3. 0.256 lag
  4. 0.384 lag

Correct answer: 2. 0.181 lag

Solution:

No load PF (CosĪ†) = Wo/(V1.Io) = 200/(220*5) = 0.181 lag

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