Practice question

A straight truck builds air from 85 psi to 100 psi in 2 minutes 20 seconds at 700 rpm. What is the result?

  1. Pass, because rpm is within 600 to 900
  2. Pass, because only tractor-trailers have a limit
  3. Fail only if cut-out is above 150 psi
  4. Fail, because the build-up must take two minutes or less

Answer: D — Fail, because the build-up must take two minutes or less

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