The core of a transformer is laminated so thata)Ratio Es/Ep is increasedb)Rusting of core may be stoppedc)Energy losses due to eddy currents be reducedd)Change in flux is increasedCorrect answer is option 'C'.
Basic Electronics – Classification of Transformers
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Electrical Transformer | Main Parts | Construction Of Electrical Transformer
Which material is chosen for a transformer core, and why? - Quora