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.

Because compressed air contains some water which must be drained from the tanks

Because the air gets old and needs to be replaced

Because compressed air contains some water which must be drained from the tanks

To allow for a change in air pressure

To remove bad air from the tanks

A dual air brake system has two separate air brake systems that use a single set of brake controls. One system typically operates the regular brakes on the rear axle or axles. The other system operates the regular brakes on the front axle.

Has two separate air brake systems, but uses a single set of controls.

Has a single air brake system, but uses two sets of controls.

Has one air brake system for each side of the truck.

Has two separate air brake systems, but uses a single set of controls.

Some air brake systems include an evaporator that introduces alcohol into the system. The alcohol can help prevent ice from forming within the system.

Prevents ice from forming in the braking system.

Makes the brakes work without squeaking.

Prevents ice from forming in the braking system.

Lubricates parts of the braking system.

Air Brakes Endorsement Test | Florida 2024 #1

Train for FREE online with our Florida 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 FL Class A/Class B driver license in 2024, 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.

Number of Question 25

Passing Score 20

Number of Tests 20

Air Brakes Endorsement Test | Florida 2024 #1

1 . Why do you need to drain air tanks regularly?

2 . If using air tanks with manually operated drains, how often should you drain the tanks?

3 . A dual air brake system:

4 . How many air storage tanks are used in an air brake system?

5 . An alcohol evaporator in an air brake system:

6 . Before starting down a hill, be sure to:

Search the best driving school in your neighbourhood