Air Brake Practice Test 08

By practicing with this test, you’ll be able to walk into your official exam with flying colors, knowing that you’ve done everything possible to prepare yourself. Some key things to keep in mind as you study include understanding the different types of brakes, recognizing the various parts of an air brake system, and knowing how to conduct a proper pre-trip inspection. With hard work and focus, there’s no reason why you can’t ace your air brake test and achieve success in your driving career.

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Air Brake Practice Test 08

1 / 30

Which statement is false? The following are recommended adjustment steps for S-cam brakes with manual slack adjusters...

2 / 30

Adjusting automatic slack adjusters by hand is not recommended unless...

3 / 30

When checking for leakage, the pressure should not drop more than how many psi per minute?

4 / 30

Which of the following is not part of the brake test?

5 / 30

If the S-cam brake with automatic slack adjuster are badly out of adjustment, who should inspect them?

6 / 30

Since there are a number of makes and models of air disc brakes, each with a different adjustment procedure, it is recommended that you consult...

7 / 30

Brake failures are usually the result of...

8 / 30

Which statement is false? During a pre-trip inspection, you should check the drive belt and pulleys for...

9 / 30

Which statement is false? The following are recommended steps to determine if an S-cam brake with manual slack adjusters requires adjustment...

10 / 30

During the pre-trip inspection, .check that the governor places the compressor in the unloading stage between how many psi?

11 / 30

At the first stop, what should be done after the brake adjustment?

12 / 30

While performing a manual wedge brake adjustment, which of the following is not a required step?

13 / 30

After adjusting the manual slack adjuster, backoff the adjustment bolt about how much of a turn?

14 / 30

Which of the following is not a step used to determine if an S-cam brake with manual or automatic slack adjusters requires adjustment?

15 / 30

Why do the shoes need to be adjusted?

16 / 30

The only way to be sure your vehicle brakes are properly adjusted is...

17 / 30

When checking the S-cam brake adjustment with manual slack adjuster, you should ensure...

18 / 30

How often should automatic slack adjusters be checked?

19 / 30

During a pre-trip inspection, you should ensure the reservoir air pressure builds from 50 to 90 psi within how many minutes?

20 / 30

When the brakes are adjusted by slack adjusters, the shoes are moved where?

21 / 30

When checking the compressor and warning devices on the pre-trip inspection, the warning device(s) must operate to how many psi?

22 / 30

The pre-trip air brake inspection should be completed within...

23 / 30

Why should you release the spring parking brake at 90 psi or above?

24 / 30

During an in-service check, which of the following is not checked?

25 / 30

Which statement is false? When the brakes are out of adjustment, braking efficiency is reduced by the following factors...

26 / 30

Which statement is false? The driver must be aware of the condition of the vehicle's braking system at all times. This can be done by...

27 / 30

Which statement is false? Other factors that affect the braking ability of the vehicle, include...

28 / 30

What will add to the overall push rod travel?

29 / 30

Who must ensure that the vehicle has safe, properly adjusted brakes?

30 / 30

The amount of force available at the push rod is consistent out to two inches of stroke. What happens after two inches?

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