Manitoba Commercial Drivers License Air Brakes Practice Test 1

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Manitoba Air Brakes Practice Test 1

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

1 / 20

Most air brake systems will use automatic valves to?

Increase pressure at the front wheels

Increase pressure at the back wheels

Reduce pressure at the front wheels

Reduce pressure at the back wheels

2 / 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

Because you should know your truck

So you're not suprised

3 / 20

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

The air valve is operated by the gas pedal

The air valve signals the compressor to turn on

The air valve closes, leaving the brake pressure the same

The air valve opens letting more air into the brakes

4 / 20

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

Rotors

Drum

Lining

Shoe

5 / 20

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

A compact car

A school bus

A pickup truck

A hearse

6 / 20

What powers the air brakes air compressor system?

Overhead wires

The rotation of the wheels

The trucks engine

The battery

7 / 20

The spring brake is designed for which situation?

Loading skids into the trailer

Skids and parking

Skids and emergencies

Parking and emergencies

8 / 20

What is the "cut-out" level?

The safest pressure level you can turn off the truck at

The maximum speed the air brakes can stop at

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

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

9 / 20

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

Ride the brake pedal all the time

Wear a helmet in the cab

Follow other vehicles at a safe distance

Drive on highways only

10 / 20

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

Beside the supply tank

Beside the air compressor

On each wheels brake

On the vehicle dashboard

11 / 20

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

551 kPa (80 psi)

380 kPa (55 psi)

242 kPs (35 psi)

413 kPa (60 psi)

12 / 20

The air system pressure range must be between _________.

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

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

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

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

13 / 20

Which can contaminate a brake systems air lines?

Dust

Water and salt

Grease and oil

Dirt

14 / 20

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

Monthly

Daily

Quarterly

Weekly

15 / 20

What is the service brake used for?

Normal braking

Drifting

None of these

Emergency braking

16 / 20

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

Driving the speed limit

Driving too slow

Exceeding the vehicles weight limit

Proper maintenance

17 / 20

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

Steel toe boots, safety glasses, hard hats

Shorts and Crocs

Dust mask, safety glasses

Sandals and shorts

18 / 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

50 kPa / minute

19 kPa / minute

21 kPa / minute

19 / 20

What does a governor do in an air brake system?

Tells the other brakes what do to

Regulates the tire pressure

Regulates the air pressure

Limits the speed by using automatic braking

20 / 20

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

Stop safely and immediately

Slow down but keep driving

Call the police to let them know

Check it at the nearest garage

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More Manitoba Commercial Driving Practice Tests

Manitoba Class 1 Practice Tests

Manitoba Class 3 Practice Tests

Manitoba Class 4 Practice Tests

Air Brakes Practice Tests

Manitoba 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.