Practice question

Under PennDOT CDL Manual Section 5, what is the purpose of the alcohol evaporator in some air brake systems?

To cool the brake drums
To put alcohol into the air system to reduce the risk of ice in air lines during cold weather
To replace the air dryer
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

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