Question

Some air brake systems introduce alcohol into the system to:

Answers

Make the brakes work without squeaking.

Prevent ice from forming in the brake system.

Prevent people from breathing the air from the system.

Explanation

Some air brake systems contain an alcohol evaporator. An evaporator introduces alcohol into the system to help inhibit the formation of ice in cold weather.

This questions appears in the following tests:

Alabama Air Brakes

Alaska Air Brakes

California Class A Knowledge Test

Connecticut Class B Knowledge Test

Hawaii Class B Knowledge Test

Idaho Class B Knowledge Test

Iowa Air Brakes

Kentucky Class A Knowledge Test

Louisiana Class A Knowledge Test

Louisiana Passenger

Maine Class A Knowledge Test

Maryland Class A Knowledge Test

Minnesota Class A Knowledge Test

Vermont Class A Knowledge Test

Virginia Air Brakes

Wisconsin Class A Knowledge Test