Practice question

What type of electrical signal is generated by a passive (two-wire) ABS wheel speed sensor when the wheel is rotating?

  1. A variable DC voltage signal
  2. An AC sine wave signal whose frequency and voltage increase with wheel speed
  3. A digital square wave (0V to 5V) signal
  4. A constant resistance signal measured in Ohms

Answer: B — An AC sine wave signal whose frequency and voltage increase with wheel speed

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