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Answer :

The purpose of providing an iron core in a transformer is to decrease the reluctance of the magnetic path.

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Answer : The purpose of providing iron core in a step-up transformer is to decrease the magnitude of magnetizing current.

Description : 43 The purpose of providing an iron core in a transformer is to A.Provide support to windings B. Reduce hysteresis loss C. decrease the reluctance of the magnetic path D. reduce eddy current losses

Answer : C. Decrease the reluctance of the magnetic path

Description : When secondary of a current transformer is open-circuited its iron core will be?

Answer : When secondary of a current transformer is open-circuited its iron core will be hot because of heavy iron losses taking place in it due to high flux density.

Description : 20] the main purpose of using core in a transformer is to A. Decrease iron losses B. prevent eddy current loss C. eliminate magnetic hysteresis D. decrease reluctance of the common magnetic circuit

Description : In an actual transformer the iron loss remains practically constant from no load to full load because?

Answer : In an actual transformer the iron loss remains practically constant from no load to full load because core flux remains practically constant.