Newfoundland Commercial Drivers License Air Brakes Practice Test 1

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Each license type has 5 tests to help you study and become familiar with the rules and regulations of commercial driving. The tests are not identical to the license test you will need to pass, but the questions are similar to what you will find on the real deal.

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Created by Commercial Driver HQ

Newfoundland Air Brakes Practice Test 1

A 20 question practice test to help prepare you for your air brakes knowledge test in Newfoundland

1 / 20

If the outer layer of an airline is damaged, but the inner layer is ok, what should you do?

2 / 20

Which of these is not part of an air brake system?

3 / 20

Where are the air brake chambers located?

4 / 20

Spring brakes will begin to apply when the pressure starts to drop below?

5 / 20

What might happen if the air lines are cross connected?

6 / 20

What can cause the air pressure in the air brake system to drop?

7 / 20

Before inspecting for air brake chamber leaks, you must __________.

8 / 20

Finding a small bit of oil during an inspection is no cause for concern if its coming from the _____________?

9 / 20

The pushrod stroke occurs when compressed air enters the?

10 / 20

The full capacity of the air brake system must be available when?

11 / 20

Which can contaminate a brake systems air lines?

12 / 20

Where is the air pressure gauge for the air brake system?

13 / 20

The air system pressure range must be between _________.

14 / 20

To measure the time it takes to build up pressure in the air system, the engine should be idling between _______________.

15 / 20

Why is it important to know where your air system releases air pressure from?

16 / 20

Any commercial vehicle with air brakes must not lose system pressure with the brakes applied at a rate of more than?

17 / 20

The spring brake is designed for which situation?

18 / 20

Where is the brake lining fastened?

19 / 20

What function does the alcohol evaporator perform?

20 / 20

If brake chambers on opposite side of an axle are different sizes, this may cause?

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We do our best to keep the questions current and accurate. The testing centres may change the questions on the knowledge tests at any time. Always be prepared for surprises.

Many of the answers to the questions can be found in the driver hand books or learning materials your province provides.

DISCLAIMER:CDHQ is not affiliated with the provinces or any test centres. These practice tests should not be considered official tests and you are not granted a license for completing them. Our tests are simply a practice tool to help prepare yourself for the real test.