A laminated iron core has reduced eddy-current losses because____________?
Correct answer: B. the laminations are insulated from each other
- A. more wire can be used with less D.C. resistance in coil
- B. the laminations are insulated from each other
- C. the magnetic flux is concentrated in the air gap of the core
- D. the laminations are stacked vertfcally
Explanation
Insulating the thin laminations prevents large circulating eddy-current paths between adjacent sheets, thereby reducing eddy-current loss. Stacking alone would not provide this electrical isolation.
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