Quebec Air Brake Test 02

With the knowledge gained from the practice test, you will feel more comfortable with the exam format and better equipped to handle any unexpected questions that may arise. When it comes time to take your official exam, you will likely feel more prepared and focused, ultimately resulting in passing with flying colors. So, take advantage of the free Quebec Air Brake practice test and arrive at your official exam with the tools and knowledge necessary for success.

1 / 30

What do brake drums do at high temperature?

They come away from the pads

They reduce size

Nothing

They expand

2 / 30

No matter what kind of engine brake or retarder is installed on your vehicle, the braking power is always applied to which wheels?

The trailer wheels

The front wheels

All of these

The drive wheels

3 / 30

A disc brake is made up of a disc installed on the hub and brake linings (or 'pads') that are held in place by...

Hooks

Calipers

Clamps

Diaphragms

4 / 30

When two or more vehicles are hitched together, each vehicle has how many brake hose couplers?

Two

Four

Six

Three

5 / 30

The excess heat created by friction between the linings and the drums or discs causes the linings (or the brake) to...

Lose their effectiveness

None of these

Shorten the stopping distance

Lock the wheels

6 / 30

A drum brake system is made up of brake shoes equipped with linings that do what?

Grab the rotor

Push against the shoes

Press on the inside surface of a drum mounted on the wheel

Block excess air from entering the chamber

7 / 30

What is the most popular kind of supplemental brake on the market?

An engine compression brake

A hydrodynamic (or hydraulic) retarder

An exhaust brake retarder

An electromagnetic retarder

8 / 30

If you pull up on the parking brake control knob, what happens to the wheels of the tractor and the wheels of the trailer or semi-trailer?

Nothing

They release

Only the trailer releases

They lock

9 / 30

Some vehicle manufacturers go beyond this standard and calibrate the low air pressure warning threshold at what pressure to give the driver more warning time?

90 psi

80 psi

100 psi

110 psi

10 / 30

How long does it take for air to pass through the system?

1/4 second

1 second

1/2 second

3/4 second

11 / 30

When you double your speed, the braking power required is...

Doubled

Quadrupled

Tripled

The same

12 / 30

If the load you are carrying doubles the total weight of your vehicle, the stopping or braking distance is...

The same

Quadrupled

Tripled

Doubled

13 / 30

What happens if your vehicle is not equipped with automatic self-adjusting brake levers?

None of these

It can be adjusted electronically

You can adjust the brakes while pumping the brake pedal

You will have to adjust the brakes manually

14 / 30

Which statement is false? The amount of braking power produced results from the combined effect of several mechanical factors, such as...

The length of the slack adjuster

The pressure of the compressed air

The size of the brake chamber

The width of the slack adjuster

15 / 30

To connect brake hose couplers, you must fit them together at what angle and then rotate them until the hoses are lined up straight?

60°

90°

70°

45°

16 / 30

When the emergency brakes are activated, the wheels equipped with brake chambers begin to lock as soon as the air pressure falls to...

70 psi

60 psi

90 psi

80 psi

17 / 30

What happens when the air enters the brake chambers?

None of these

It pushes on the diaphragm that is attached to a push rod

It gets vented into the atmosphere

It locks the wheels

18 / 30

What colour are the brake hoses that are used to supply air to the brake chambers for the service brakes?

Blue

Red

Black

Yellow

19 / 30

Which statement is false? There is a simple procedure you can use to optimize the play or space between the linings and drums, including...

Make sure the brakes are hot

Fully depress the brake pedal for five seconds and then release it completely

Release the parking brake

Bring the system up to maximum air pressure (120 psi)

20 / 30

Brake linings lose their effectiveness if...

Put in upside down

They become overheated through misuse or overuse

Bought cheaply

Tires are under-inflated

21 / 30

If your road tractor is not hitched to a semi-trailer or trailer, you must hook up each brake hose coupler to...

None of these

A safety box

A hook at the rear of the cab

A dummy brake hose coupler

22 / 30

To ensure that air brakes will react as quickly as possible, air brake lines have...

Valves

Increased in size

Switches

All of these

23 / 30

The emergency brake is activated automatically in an emergency situation when the air pressure in the service brake system drops below...

45 psi

15 psi

25 psi

35 psi

24 / 30

Will supplemental brake systems bring your vehicle to a stop?

Yes

It will at low speed

With certain types of vehicles

25 / 30

When you release the parking brake, where does the air flows?

Into the brake lines

Through the two-way valve

Back into the brake chamber

Into the atmosphere

26 / 30

What are the most common kind of brake found on heavy vehicles?

D-cam

S-cam

B-cam

R-cam

27 / 30

To alleviate overheating, you can...

None of these

Brake harder to shorten the distance

Pump the brakes

Increase stopping distance

28 / 30

What is the parking brake equipped with that allows the brake to be applied mechanically when the vehicle is parked?

A thick cable

A large clamp

Hydraulic fluid

A powerful spring

29 / 30

Engine brakes and retarders are activated by means of...

With a foot valve

By changing gears

With a hand valve

A switch or lever

30 / 30

In contrast to drum brakes, disc brakes consume less...

Oil

Air

Force

Wear power

Your score is

Quebec Air Brake Test 02

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