Practice question

If a vehicle with an air dryer shows more than a few drops of water when reservoirs are drained, what should the driver conclude?

  1. The low-air warning is guaranteed defective
  2. The air dryer or compressor may need service
  3. All slack adjusters have failed
  4. The trailer hand valve is working correctly

Answer: B — The air dryer or compressor may need service

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Practice more: Alberta Air Brake (Q) Knowledge Test Practice Questions - Alberta Air Brake (Q Endorsement) Knowledge Test Exam - Variant 2 →