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Pregunta 260

What happens when an inductor is operated above its self-resonant frequency?

  1. Its reactance increases
  2. Harmonics are generated
  3. It becomes capacitiveRespuesta correcta
  4. Catastrophic failure is likely

Explicación

Every inductor has distributed capacitance between its turns, and above the self-resonant frequency that capacitance dominates, so the part presents a capacitive rather than an inductive reactance. Nothing breaks and no harmonics are generated by operating there, but the component no longer does the job an inductor is meant to do.

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Pregunta 260: What happens when an inductor is operated above its… · FCC General Class (Element 3) · Questena