Newfoundland Commercial Drivers License Air Brakes Practice Test 1

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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

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

2 / 20

What function does the alcohol evaporator perform?

3 / 20

The air system pressure range must be between _________.

4 / 20

The pushrod stroke occurs when compressed air enters the?

5 / 20

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

6 / 20

Which can contaminate a brake systems air lines?

7 / 20

Where is the brake lining fastened?

8 / 20

Where are the air brake chambers located?

9 / 20

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

10 / 20

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

11 / 20

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

12 / 20

The spring brake is designed for which situation?

13 / 20

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

14 / 20

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

15 / 20

What might happen if the air lines are cross connected?

16 / 20

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

17 / 20

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

18 / 20

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

19 / 20

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

20 / 20

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

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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.