Manitoba Commercial Drivers License Air Brakes Practice Test 2

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Manitoba Air Brakes Practice Test 2

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

1 / 20

Which type of trailer can be towed before the service tanks are full?

A spring brake priority trailer

None of these

Both of these

A service brake priority trailer

2 / 20

Where are the vehicles air tanks located?

Inside the wheel

In the engine compartment

In the cab of the vehicle

Underneath around the frame

3 / 20

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

Any of these apply

The driver leaves the cab without applying the parking brake

The driver is not within 50 m of the vehicle

The driver leaves the cab under any circumstances

4 / 20

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

Cold air temperatures

Overextension of the brake chamber pushrod

High pressure in the compressed air tanks

Damp road conditions

5 / 20

Who can perform adjustments and maintenance on your air brake system?

Anyone

You can if you are the owner

Your employer

Only certified technicians

6 / 20

When you are going twice the speed, your brakes will need to work ________ time harder to stop your vehicle.

Four

Two

Three

Five

7 / 20

What might happen if the air lines are cross connected?

Any of these

The service brakes will not function correctly

The spring brakes won't work

The towing vehicle will lose air

8 / 20

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

21 kPa / minute

50 kPa / minute

19 kPa / minute

37 kPa / minute

9 / 20

Most air brake systems will use automatic valves to?

Reduce pressure at the front wheels

Increase pressure at the back wheels

Reduce pressure at the back wheels

Increase pressure at the front wheels

10 / 20

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

Yellow

Red

Blue

Black

11 / 20

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

Brake adjustments

Weight of the driver

Weight of the vehicle

Driving speed

12 / 20

The full capacity of the air brake system must be available when?

When going downhill

At all times

When traveling at high speed

In city traffic

13 / 20

What is an ABS system?

Prevents wheel lock

Reduces stopping distance

Automatically brakes when needed

Increases braking power

14 / 20

What is the "cut in" level?

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

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

15 / 20

Which statement is true of spring brakes?

They are stronger than service brakes

They can be used in lieu of service brakes

They are not as strong as service brakes

They are as strong as service brakes

16 / 20

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

242 kPs (35 psi)

551 kPa (80 psi)

380 kPa (55 psi)

413 kPa (60 psi)

17 / 20

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

242 kPs (35 psi)

380 kPa (55 psi)

413 kPa (60 psi)

551 kPa (80 psi)

18 / 20

Where are the air brake chambers located?

Near the compressor

At each wheel

At the front wheels

At the back wheels

19 / 20

Th design of the wedge brake system allows them to?

Self isolate

Self seal

Self adust

Self lubricate

20 / 20

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

The pressure gauge

The air compressor

The foundation brake components

The air lines

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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.