Nova Scotia Commercial Drivers License Air Brakes Practice Test 5

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Nova Scotia Air Brakes Practice Test 5

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

1 / 20

Why are their two service tanks?

Incase you need more stopping power

For efficiency

For fuel economy

For safety

2 / 20

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

Turn off your air brakes

Replace the line

Leave it alone, it's fine

Cover it with tape

3 / 20

When brakes become overheated they also become?

None of the above

Dangerously inefficient

Extra efficient

Very hot

4 / 20

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

Shoe

Drum

Rotors

Lining

5 / 20

What is not a factor in how well your air brake system works?

Brake adjustments

Driving speed

Weight of the vehicle

Weight of the driver

6 / 20

Where are the air brake chambers located?

At the front wheels

Near the compressor

At each wheel

At the back wheels

7 / 20

What is the best way to inspect an air compressor?

With the engine on in neutral

With the engine on and in high gear

With the engine on in first gear

With the engine off

8 / 20

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

The driver leaves the cab under any circumstances

The driver is not within 50 m of the vehicle

The driver leaves the cab without applying the parking brake

Any of these apply

9 / 20

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

Check it at the nearest garage

Stop safely and immediately

Slow down but keep driving

Call the police to let them know

10 / 20

The low air pressure warning device needs to be replaced or adjusted if it does not trigger at a minimum level of?

413 kPa (60 psi)

242 kPs (35 psi)

551 kPa (80 psi)

380 kPa (55 psi)

11 / 20

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

The vehicle only moves slightly back and forth

The front wheels are blocked

The truck can move 1.5 meters

The wheels can only turn a half revolution

12 / 20

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

New holes from wear and tear

Mismatched slack adjuster lengths

All of the below

Cracks or other damage

13 / 20

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

Sleepy drivers

Over weight limits

Tire treads

Air brakes

14 / 20

The pushrod stroke occurs when compressed air enters the?

Engine block

Brake chamber

Supply tank

Air compressor

15 / 20

A warning system must alert the driver when the pressure drops below?

380 kPa (55 psi)

413 kPa (60 psi)

242 kPs (35 psi)

551 kPa (80 psi)

16 / 20

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

The air lines

The foundation brake components

The pressure gauge

The air compressor

17 / 20

What is an ABS system?

Reduces stopping distance

Automatically brakes when needed

Prevents wheel lock

Increases braking power

18 / 20

When inspecting your brakes, you must?

Block the truck with wheel chocks

Apply spring brakes

All of these

Drive the vehicle to level ground

19 / 20

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

827 kPa (120 psi)

551 kPa (80 psi)

413 kPa (60 psi)

620 kPa (90 psi)

20 / 20

Spring brake controls are usually what color?

Red

Orange

Blue

Yellow

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More Nova Scotia Commercial Driving Practice Tests

Nova Scotia Class 1 Practice Tests

Nova Scotia Class 3 Practice Tests

Air Brakes Practice Tests

Nova Scotia Class 4 Practice Tests

Nova Scotia Road Signs Test

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.