In the last lab, we learned how an AC electromagnetic field canproduce circulating eddy currents within a bulk conductor, such asa ferromagnetic core inside a coil. These eddy currents requireenergy to produce, and therefore cause efficiency losses in somedevices. How do we reduce eddy current losses in transformers?
| a. | Eddy current losses are reduced by using transformer coils ofspecial wire. |
| b. | Rather than solid metal, transformer cores are made from thin,ferromagnetic laminations. |
| c. | A reduction in energy losses is important to transformerdesign. |
| d. | Eddy currents only circulate in a vertical plane, so they arereduced by mounting the transformer on its side. |
| e. | The ferromagnetic core of the transformer is covered with anon-conductive coating. |
