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

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

Increased in size

All of these

Switches

Valves

2 / 30

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

Three

Two

Four

Six

3 / 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

80 psi

90 psi

60 psi

4 / 30

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

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

Block excess air from entering the chamber

Grab the rotor

Push against the shoes

5 / 30

What happens when the air enters the brake chambers?

It gets vented into the atmosphere

It locks the wheels

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

None of these

6 / 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?

They lock

They release

Only the trailer releases

Nothing

7 / 30

To alleviate overheating, you can...

Increase stopping distance

Pump the brakes

None of these

Brake harder to shorten the distance

8 / 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 powerful spring

Hydraulic fluid

A large clamp

9 / 30

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

Quadrupled

Doubled

Tripled

The same

10 / 30

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

Into the brake lines

Back into the brake chamber

Into the atmosphere

Through the two-way valve

11 / 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

All of these

The drive wheels

The front wheels

12 / 30

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

D-cam

S-cam

B-cam

R-cam

13 / 30

Will supplemental brake systems bring your vehicle to a stop?

It will at low speed

Yes

With certain types of vehicles

14 / 30

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

The size of the brake chamber

The pressure of the compressed air

The width of the slack adjuster

The length of the slack adjuster

15 / 30

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

You can adjust the brakes while pumping the brake pedal

None of these

It can be adjusted electronically

You will have to adjust the brakes manually

16 / 30

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

3/4 second

1/4 second

1 second

1/2 second

17 / 30

What do brake drums do at high temperature?

Nothing

They come away from the pads

They expand

They reduce size

18 / 30

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

Yellow

Black

Blue

Red

19 / 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?

80 psi

90 psi

110 psi

100 psi

20 / 30

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

Force

Wear power

Oil

Air

21 / 30

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

Lock the wheels

Shorten the stopping distance

Lose their effectiveness

None of these

22 / 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?

45°

60°

90°

70°

23 / 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...

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

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

Release the parking brake

Make sure the brakes are hot

24 / 30

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

A switch or lever

With a foot valve

With a hand valve

By changing gears

25 / 30

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

The same

Doubled

Quadrupled

Tripled

26 / 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...

Calipers

Clamps

Hooks

Diaphragms

27 / 30

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

A hook at the rear of the cab

None of these

A safety box

A dummy brake hose coupler

28 / 30

Brake linings lose their effectiveness if...

Bought cheaply

Put in upside down

They become overheated through misuse or overuse

Tires are under-inflated

29 / 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

30 / 30

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

A hydrodynamic (or hydraulic) retarder

An engine compression brake

An electromagnetic retarder

An exhaust brake retarder

Your score is

Quebec Air Brake Test 02

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