Manitoba Airbrake Practice Exam

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The engine's buildup rate should increase air pressure from what psi to what psi within two minutes?

  1. 65 - 80 psi

  2. 75 - 90 psi

  3. 85 - 100 psi

  4. 95 - 110 psi

The correct answer is: 85 - 100 psi

The other options listed are incorrect because they either start at too low of a psi or end at too high of a psi. Starting at 65 psi or 75 psi would not provide enough pressure buildup and ending at 110 psi is beyond the recommended maximum pressure. It is important for the engine to reach the ideal air pressure range within two minutes in order for it to function properly and efficiently. Therefore, the correct answer is 85 - 100 psi.

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