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

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

15 psi

25 psi

35 psi

45 psi

2 / 30

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

Through the two-way valve

Into the atmosphere

Back into the brake chamber

Into the brake lines

3 / 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

Nothing

They release

Only the trailer releases

4 / 30

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

With a hand valve

By changing gears

A switch or lever

With a foot valve

5 / 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

Diaphragms

Hooks

Clamps

6 / 30

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

The same

Quadrupled

Tripled

Doubled

7 / 30

Brake linings lose their effectiveness if...

Put in upside down

They become overheated through misuse or overuse

Tires are under-inflated

Bought cheaply

8 / 30

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

1/2 second

1 second

3/4 second

1/4 second

9 / 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?

90°

70°

45°

60°

10 / 30

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

Quadrupled

Tripled

The same

Doubled

11 / 30

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

The pressure of the compressed air

The length of the slack adjuster

The width of the slack adjuster

The size of the brake chamber

12 / 30

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

Valves

Switches

Increased in size

All of these

13 / 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

100 psi

110 psi

80 psi

14 / 30

What do brake drums do at high temperature?

They reduce size

They expand

They come away from the pads

Nothing

15 / 30

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

It can be adjusted electronically

None of these

You will have to adjust the brakes manually

You can adjust the brakes while pumping the brake pedal

16 / 30

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

An exhaust brake retarder

An engine compression brake

An electromagnetic retarder

A hydrodynamic (or hydraulic) retarder

17 / 30

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

Oil

Force

Air

Wear power

18 / 30

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

B-cam

D-cam

S-cam

R-cam

19 / 30

Will supplemental brake systems bring your vehicle to a stop?

With certain types of vehicles

Yes

It will at low speed

20 / 30

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

All of these

The front wheels

The drive wheels

The trailer wheels

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

None of these

Lose their effectiveness

22 / 30

To alleviate overheating, you can...

Brake harder to shorten the distance

Increase stopping distance

None of these

Pump the brakes

23 / 30

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

Red

Black

Yellow

Blue

24 / 30

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

Four

Three

Six

Two

25 / 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

26 / 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

Release the parking brake

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

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

27 / 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

Push against the shoes

Grab the rotor

Block excess air from entering the chamber

28 / 30

What happens when the air enters the brake chambers?

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

It gets vented into the atmosphere

It locks the wheels

None of these

29 / 30

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

Hydraulic fluid

A powerful spring

A large clamp

A thick cable

30 / 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

60 psi

90 psi

Your score is

Quebec Air Brake Test 02

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