Reduction in core losses and increase in permeability are obtained with transformer employing__________?
Correct answer: A. core built-up of laminations of cold rolled grain oriented steel
- A. core built-up of laminations of cold rolled grain oriented steel
- B. core built-up of laminations of hot rolled sheet
- C. either of the above
- D. none of the above
Explanation
Cold-rolled grain-oriented steel provides high permeability along the grain direction and lower hysteresis and eddy-current losses than ordinary hot-rolled sheet. This reduces transformer core losses.
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