Alberta Commercial Drivers License Air Brakes Practice Test 5

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Alberta Air Brakes Practice Test 5

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

1 / 20

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

The air valve closes, leaving the brake pressure the same

The air valve opens letting more air into the brakes

The air valve signals the compressor to turn on

The air valve is operated by the gas pedal

2 / 20

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

37 kPa / minute

19 kPa / minute

50 kPa / minute

21 kPa / minute

3 / 20

Which can contaminate a brake systems air lines?

Dust

Grease and oil

Water and salt

Dirt

4 / 20

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

In case anyone ever asks

Because it can be dangerous

So you're not suprised

Because you should know your truck

5 / 20

The air system pressure range must be between _________.

551 kPa (80 psi) and 1000 kPa (145 psi)

413 kPa (60 psi) and 828 kPa (120 psi)

483 kPa (70 psi) and 1138 kPa (165 psi)

690 kPa (100 psi) and 1380 kPa (200 psi)

6 / 20

The spring brake is designed for which situation?

Parking and emergencies

Skids and parking

Loading skids into the trailer

Skids and emergencies

7 / 20

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

Lining

Rotors

Shoe

Drum

8 / 20

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

Dust mask, safety glasses

Shorts and Crocs

Steel toe boots, safety glasses, hard hats

Sandals and shorts

9 / 20

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

A pickup truck

A school bus

A compact car

A hearse

10 / 20

The best way to reduce rough and abrupt braking is to?

Drive on highways only

Wear a helmet in the cab

Follow other vehicles at a safe distance

Ride the brake pedal all the time

11 / 20

Most air brake systems will use automatic valves to?

Reduce pressure at the front wheels

Increase pressure at the front wheels

Reduce pressure at the back wheels

Increase pressure at the back wheels

12 / 20

What is the service brake used for?

None of these

Drifting

Normal braking

Emergency braking

13 / 20

What does a governor do in an air brake system?

Regulates the air pressure

Tells the other brakes what do to

Regulates the tire pressure

Limits the speed by using automatic braking

14 / 20

What is the "cut-out" level?

The safest pressure level you can turn off the truck at

The pressure level that triggers the governor to turn on the air compressor

The pressure level that triggers the governor to cut off the air compressor

The maximum speed the air brakes can stop at

15 / 20

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

On each wheels brake

Beside the supply tank

Beside the air compressor

On the vehicle dashboard

16 / 20

What powers the air brakes air compressor system?

The battery

The rotation of the wheels

Overhead wires

The trucks engine

17 / 20

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

380 kPa (55 psi)

551 kPa (80 psi)

413 kPa (60 psi)

242 kPs (35 psi)

18 / 20

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

Check it at the nearest garage

Call the police to let them know

Slow down but keep driving

Stop safely and immediately

19 / 20

Doing this will put unnecessary strain on your vehicles braking system.

Exceeding the vehicles weight limit

Driving the speed limit

Driving too slow

Proper maintenance

20 / 20

Manufactures recommend draining moisture and oil in an air system on a _______ basis.

Weekly

Monthly

Daily

Quarterly

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More Alberta Commercial Driving Practice Tests

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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.