Quebec Commercial Drivers License Air Brakes Practice Test 3

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Quebec Air Brakes Practice Test 3

A 20 question practice test to help prepare you for your air brakes knowledge test in Quebec

1 / 20

Spring brake controls are usually what color?

Orange

Yellow

Blue

Red

2 / 20

The air system pressure range must be between _________.

483 kPa (70 psi) and 1138 kPa (165 psi)

551 kPa (80 psi) and 1000 kPa (145 psi)

413 kPa (60 psi) and 828 kPa (120 psi)

690 kPa (100 psi) and 1380 kPa (200 psi)

3 / 20

Why is it important to know where your air system releases air pressure from?

So you're not suprised

Because it can be dangerous

Because you should know your truck

In case anyone ever asks

4 / 20

Where is the brake lining fastened?

The wheel well

The struts

The brake shoe

The rim of the tire

5 / 20

Manufactures recommend draining moisture and oil in an air system on a _______ basis.

Monthly

Quarterly

Daily

Weekly

6 / 20

Activation of trailer spring brakes can be checked by?

Gunning it

Rocking the truck back and forth

Applying slight engine power

Pulling the trailer air valve

7 / 20

What might happen if the air lines are cross connected?

Any of these

The towing vehicle will lose air

The service brakes will not function correctly

The spring brakes won't work

8 / 20

Finding a small bit of oil during an inspection is no cause for concern if its coming from the _____________?

Supply tank

Wheel bearings

The first tank

The second tank

9 / 20

If brake chambers on opposite side of an axle are different sizes, this may cause?

Unbalanced weight

Efficient stopping

Unbalanced braking

More power than necessary

10 / 20

What does a governor do in an air brake system?

Regulates the air pressure

Regulates the tire pressure

Tells the other brakes what do to

Limits the speed by using automatic braking

11 / 20

What is an ABS system?

Increases braking power

Reduces stopping distance

Automatically brakes when needed

Prevents wheel lock

12 / 20

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

Both of these

A spring brake priority trailer

None of these

A service brake priority trailer

13 / 20

System air loss should be measured by applying the brake for how long?

5 minutes

10 minutes

1 minute

2 minutes

14 / 20

Where is the air pressure gauge for the air brake system?

Beside the supply tank

Beside the air compressor

On the vehicle dashboard

On each wheels brake

15 / 20

You should be looking for this when checking your brake chambers?

Cracks or other damage

Mismatched slack adjuster lengths

All of the below

New holes from wear and tear

16 / 20

What powers the air brakes air compressor system?

The rotation of the wheels

The battery

Overhead wires

The trucks engine

17 / 20

How do you engage the emergency / parking brake on most air brake systems?

Twist it to the right

Twist it to the left

Pull out the control

Press down the pedal

18 / 20

Which statement is true of spring brakes?

They can be used in lieu of service brakes

They are as strong as service brakes

They are stronger than service brakes

They are not as strong as service brakes

19 / 20

Trailer air brake systems must apply a spring brake when the pressure drops below?

514 kPa (74 psi)

414 kPa (60 psi)

690 kPa (100 psi)

242 kPa (35 psi)

20 / 20

Most air brake systems will use automatic valves to?

Increase pressure at the back wheels

Reduce pressure at the front wheels

Reduce pressure at the back wheels

Increase pressure at the front wheels

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More Quebec Commercial Driving Practice Tests

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Quebec Class 3 Practice Tests

Air Brakes Practice Tests

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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.