Practice question

What compressor build-up performance does Alberta list in the Class 1 trip air brake inspection?

  1. 50 to 90 psi within three minutes at about 1200 rpm
  2. 10 to 20 psi within one hour
  3. 90 to 120 psi only while descending a hill
  4. No build-up test is required

Answer: A — 50 to 90 psi within three minutes at about 1200 rpm

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