FREE Air Brakes Endorsement Test Online | Tennessee 2024
Train for FREE online with our Tennessee CDL air brake test. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a TN Class A/Class B driver license in 2021, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that the requirements for CDL may vary from state to state.
1 . Some air brake systems use alcohol:
Some air brake systems contain an alcohol evaporator. This device introduces alcohol into the braking system to inhibit the formation of ice.
2 . Air tank drains:
In an air brake system, the air tanks are equipped with drains that allow water and compressor oil to be removed from the system. If allowed to build up, water and compressor oil can damage an air brake system.
3 . ____ make up the emergency brake system.
In an air brake system, there are three different braking systems: a service brake system, a parking brake system, and an emergency brake system. The emergency brake system uses parts of both the parking and service brake systems.
4 . In a dual air brake system:
A dual air brake system is made up of two separate air brake systems. The systems share a single set of brake controls, but each has its own air tanks, hoses, and lines.
5 . Brake linings should be:
Brake linings should not be loose or soaked with oil or grease. They shouldn't be dangerously thin.
6 . Why do you need to drain air tanks regularly?
Compressed air in an air brake system usually contains a certain amount of water and compressor oil. The water and oil can damage the brakes if left to accumulate in the system. Tanks must be drained regularly to remove this build-up.
See the exact questions that will be on the 2024 Tennessee DMV exam.
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