In low or standard frequency induction furnace, heat is produced by the_______________________?
Correct answer: B. Induction and resistance
- A. Combination of induced current and skin effect
- B. Induction and resistance
- C. Current flow through a heating element
- D. None of these
Explanation
In a low- or standard-frequency induction furnace, the alternating magnetic field induces currents in the charge, and the electrical resistance of the charge converts those currents into heat. Skin effect is especially important at higher frequencies, so option a is not the best description here.
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