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

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

Four

Two

Six

Three

2 / 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

3 / 30

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

You will have to adjust the brakes manually

It can be adjusted electronically

You can adjust the brakes while pumping the brake pedal

None of these

4 / 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°

70°

90°

60°

5 / 30

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

The same

Doubled

Quadrupled

Tripled

6 / 30

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

S-cam

D-cam

B-cam

R-cam

7 / 30

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

Block excess air from entering the chamber

Push against the shoes

Grab the rotor

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

8 / 30

What do brake drums do at high temperature?

Nothing

They come away from the pads

They reduce size

They expand

9 / 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 trailer wheels

The front wheels

The drive wheels

10 / 30

To alleviate overheating, you can...

Brake harder to shorten the distance

Increase stopping distance

None of these

Pump the brakes

11 / 30

Brake linings lose their effectiveness if...

They become overheated through misuse or overuse

Tires are under-inflated

Put in upside down

Bought cheaply

12 / 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?

110 psi

80 psi

100 psi

90 psi

13 / 30

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

Yellow

Black

Red

Blue

14 / 30

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

A dummy brake hose coupler

A hook at the rear of the cab

A safety box

None of these

15 / 30

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

Through the two-way valve

Into the brake lines

Into the atmosphere

Back into the brake chamber

16 / 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

17 / 30

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

An engine compression brake

An exhaust brake retarder

A hydrodynamic (or hydraulic) retarder

An electromagnetic retarder

18 / 30

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

A thick cable

Hydraulic fluid

A powerful spring

A large clamp

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

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

Increased in size

Valves

All of these

Switches

21 / 30

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

The width of the slack adjuster

The size of the brake chamber

The length of the slack adjuster

The pressure of the compressed air

22 / 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

Diaphragms

Hooks

23 / 30

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

15 psi

45 psi

25 psi

35 psi

24 / 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

25 / 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

26 / 30

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

Force

Wear power

Oil

Air

27 / 30

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

3/4 second

1 second

1/2 second

1/4 second

28 / 30

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

A switch or lever

With a hand valve

With a foot valve

By changing gears

29 / 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

Only the trailer releases

They lock

They release

30 / 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

Shorten the stopping distance

Lock the wheels

None of these

Your score is

Quebec Air Brake Test 02

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