Q.

The transformer efficiency, under heavy loads is comparatively low because

  • Acopper loss becomes high in comparison to the output
  • BLarge increase in iron losses
  • CDrop in power factor
  • DNone of the above
Correct Answer : (A)

copper loss becomes high in comparison to the output

Hints :

The transformer efficiency, under heavy loads is comparatively low because copper loss becomes high in comparison to the output.

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