Practice question

Which governor behavior is acceptable under ICBC's air brake guide?

  1. It never unloads the compressor
  2. It unloads around the upper pressure setting and cuts in before pressure falls below 80 psi
  3. It cuts in only after pressure reaches zero
  4. It controls only the parking brake button

Answer: B — It unloads around the upper pressure setting and cuts in before pressure falls below 80 psi

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