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

Where are the vehicles air tanks located?

Underneath around the frame

In the engine compartment

In the cab of the vehicle

Inside the wheel

2 / 20

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

Four

Three

Five

Two

3 / 20

What is the "cut in" level?

The safest pressure level you can turn off the truck at

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

The maximum speed the air brakes can stop at

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

4 / 20

Most air brake systems will use automatic valves to?

Increase pressure at the back wheels

Reduce pressure at the back wheels

Increase pressure at the front wheels

Reduce pressure at the front wheels

5 / 20

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

Overextension of the brake chamber pushrod

High pressure in the compressed air tanks

Damp road conditions

Cold air temperatures

6 / 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

7 / 20

What is an ABS system?

Prevents wheel lock

Automatically brakes when needed

Increases braking power

Reduces stopping distance

8 / 20

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

The driver is not within 50 m of the vehicle

Any of these apply

The driver leaves the cab without applying the parking brake

The driver leaves the cab under any circumstances

9 / 20

What might happen if the air lines are cross connected?

The service brakes will not function correctly

The towing vehicle will lose air

The spring brakes won't work

Any of these

10 / 20

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

Only certified technicians

Your employer

You can if you are the owner

Anyone

11 / 20

Th design of the wedge brake system allows them to?

Self isolate

Self adust

Self lubricate

Self seal

12 / 20

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

Red

Blue

Yellow

Black

13 / 20

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

None of these

Both of these

A spring brake priority trailer

A service brake priority trailer

14 / 20

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

Driving speed

Weight of the driver

Weight of the vehicle

Brake adjustments

15 / 20

Where are the air brake chambers located?

Near the compressor

At the front wheels

At the back wheels

At each wheel

16 / 20

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

When traveling at high speed

In city traffic

When going downhill

At all times

17 / 20

Which statement is true of spring brakes?

They can be used in lieu of service brakes

They are stronger than service brakes

They are not as strong as service brakes

They are as strong as service brakes

18 / 20

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

The pressure gauge

The foundation brake components

The air compressor

The air lines

19 / 20

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

380 kPa (55 psi)

413 kPa (60 psi)

551 kPa (80 psi)

242 kPs (35 psi)

20 / 20

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

551 kPa (80 psi)

380 kPa (55 psi)

413 kPa (60 psi)

242 kPs (35 psi)

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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.