CDL · Air brakes
What is the purpose of the alcohol evaporator found on some air brake systems?
Correct answer: To help stop ice from building up inside the brake system.
Answer options
- ATo help stop ice from building up inside the brake system Correct
- BTo give the tires a better grip on wet or slippery roads
- CTo reduce the braking force so the wheels will not lock up
Why
The evaporator puts a small amount of alcohol into the air system, which lowers the chance that moisture will freeze in valves and other parts during cold weather; ice there can keep the brakes from working. Air tanks still need regular draining unless they have automatic drain valves.
About this question
Topic: Air brakes License: CDL
Part of these practice sets:
Where it applies: Asked in every state.
Practice the whole set
This question is part of How Air Brakes Work (18 questions). Take the full set and check your score.
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