Nova Scotia Commercial Drivers License Air Brakes Practice Test 3

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Created by Commercial Driver HQ

Nova Scotia Air Brakes Practice Test 3

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

1 / 20

When brakes become overheated they also become?

2 / 20

Most air brake systems will use automatic valves to?

3 / 20

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

4 / 20

What is the service brake used for?

5 / 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?

6 / 20

What function does the alcohol evaporator perform?

7 / 20

What is the first thing to look at when inspecting an air brake system?

8 / 20

Which tank should be drained first when draining the air tanks on an air brake system?

9 / 20

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

10 / 20

A commercial vehicle with air brakes engaged must not lose air pressure faster than?

11 / 20

What powers the air brakes air compressor system?

12 / 20

Which can contaminate a brake systems air lines?

13 / 20

Spring brake controls are usually what color?

14 / 20

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

15 / 20

How much air loss is allowed for a tractor and a trailer when the brakes are engaged?

16 / 20

When inspecting an air brake system, the person inspecting should wear?

17 / 20

Where is the brake lining fastened?

18 / 20

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

19 / 20

Cut out pressure level must never exceed __________.

20 / 20

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

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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.