In a power transformer, iron loss remain practically constant from no load ot full load. This is because

  • ACore flux remains constant
  • BLeakage flux remains constant
  • CBoth a and b
  • DNeither a nor b
Correct Answer : (A)

Core flux remains constant

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

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