Amateur Extra Class: 2020–2024
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E4E05:

How can radio frequency interference from an AC motor be suppressed?

  1. By installing a high-pass filter in series with the motor's power leads
  2. By installing a brute-force AC-line filter in series with the motor leads
  3. By installing a bypass capacitor in series with the motor leads
  4. By using a ground-fault current interrupter in the circuit used to power the motor
E4E01 E4E02 E4E03 E4E04 E4E05 E4E06 E4E07 E4E08 E4E09 E4E10 E4E11