Q.For the protection of transformers, harmonic restraint is used to guard against

  • AMagnetizing inrush current. 
  • BUnbalanced operation 
  • CLightning 
  • DSwitching overvoltage 
Correct Answer : (A)

Magnetizing inrush current. 

Hints :

For the protection of transformers, harmonic restraint is used to guard against Magnetizing inrush current. 

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