Practice question

For the Washington CDL Air Brakes knowledge test, what is the purpose of the alcohol evaporator in some air brake systems?

  1. To cool the brake drums
  2. To put alcohol into the air system to reduce the risk of ice in air lines during cold weather
  3. To replace the air dryer
  4. To clean the brake linings

Answer: B — To put alcohol into the air system to reduce the risk of ice in air lines during cold weather

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