Newfoundland Commercial Drivers License Air Brakes Practice Test 3

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Created by Commercial Driver HQ

Newfoundland Air Brakes Practice Test 3

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

1 / 20

Cut in pressure level must never fall below __________.

2 / 20

Spring brake controls are usually what color?

3 / 20

You should be looking for this when checking your brake chambers?

4 / 20

When inspecting your brakes, you must?

5 / 20

Which of these significantly decreases the brake force produced at the wheel?

6 / 20

Who can perform adjustments and maintenance on your air brake system?

7 / 20

Why are their two service tanks?

8 / 20

What is the "cut-out" level?

9 / 20

Th design of the wedge brake system allows them to?

10 / 20

What should you do when the air brakes low pressure warning comes on?

11 / 20

What does a governor do in an air brake system?

12 / 20

Activation of trailer spring brakes can be checked by?

13 / 20

Where are the vehicles air tanks located?

14 / 20

You test a tractor protection valve by removing the service line and?

15 / 20

What is the service brake used for?

16 / 20

Most air brake systems will use automatic valves to?

17 / 20

A vehicle should have wheel chocks or blocks securing it in place during inspection if...?

18 / 20

How long should it take for the air pressure to rise from 587kPa to 690 kPa after the pressure had fallen below 552 kPa?

19 / 20

Test the low pressure alarm with the air pressure above __________.

20 / 20

Trailer air brake systems must apply a spring brake when the pressure drops below?

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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.