Monday, April 25, 2016

A transformer on no load is switched on to a source of voltage. it will a current


  1. which is same as the steady state magnetizing current.
  2. which is several times the steady state magnetizing current , depending upon the initial state of the residual flux in the transformer core.
  3. which is several times the steady state magnetizing current , independent of the initial state of the residual flux in the transformer core.
  4. which is twice the steady state magnetizing current provided the core has no residual flux.
Answer: 

which is several times the steady state magnetizing current , depending upon the initial state of the residual flux in the transformer core.

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