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In the last lab, we learned how an AC electromagnetic field can produce circulating eddy currents...

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Physics

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.

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