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Practice quizzes / Minnesota CDL Air Brakes Test Practice Questions - Minnesota Commercial Driver License (CDL) Air Brakes Knowledge Test Exam / Question 128503
Practice question

What protects air already stored in tanks if the compressor line fails?

  1. One-way check valves
  2. Brake drums
  3. The clutch pedal
  4. The windshield defroster

Answer: A — One-way check valves

The correct answer is shown above. Try the full quiz for additional practice.

Practice more: Minnesota CDL Air Brakes Test Practice Questions - Minnesota Commercial Driver License (CDL) Air Brakes Knowledge Test Exam →
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