The efficiency of two identical transformers under load conditions can be determined by

  • ABack to back test
  • BOpen circuit test
  • CShort circuit test
  • DAny of the above
Correct Answer : (A)

Back to back test

Hints :

If a sinusoidal voltage source is connected to a power transformer, it's no load current would be


On no load phasor diagram of transformer, the core loss component of the current remains in phase with

Join The Discussion