Newfoundland Commercial Drivers License Air Brakes Practice Test 5

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Our FREE practice tests are designed to help you succeed when it comes time to write the real test.

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 5

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

1 / 20

What happens to the air valve when you press down the brake?

2 / 20

The pushrod stroke occurs when compressed air enters the?

3 / 20

Which colour usually means the air line is a service line?

4 / 20

What might happen if the air lines are cross connected?

5 / 20

Correct belt tension for an air compressor can be determined by

6 / 20

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

7 / 20

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

8 / 20

When you are testing your spring brakes, the test is considered a success when?

9 / 20

When brakes become overheated they also become?

10 / 20

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

11 / 20

What function does the alcohol evaporator perform?

12 / 20

What powers the air brakes air compressor system?

13 / 20

What does a governor do in an air brake system?

14 / 20

Which of these vehicles would usually have an air brake system?

15 / 20

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

16 / 20

Which statement is true of spring brakes?

17 / 20

What is a "glad hand"?

18 / 20

What is the most frequent reason a vehicle is removed from service?

19 / 20

Where are the air brake chambers located?

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.