PEI Commercial Drivers License Air Brakes Practice Test 1

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PEI Air Brakes Practice Test 1

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

1 / 20

A warning system must alert the driver when the pressure drops below?

551 kPa (80 psi)

413 kPa (60 psi)

242 kPs (35 psi)

380 kPa (55 psi)

2 / 20

Most air brake systems will use automatic valves to?

Increase pressure at the front wheels

Reduce pressure at the back wheels

Reduce pressure at the front wheels

Increase pressure at the back wheels

3 / 20

Which of these significantly decreases the brake force produced at the wheel?

Overextension of the brake chamber pushrod

Damp road conditions

High pressure in the compressed air tanks

Cold air temperatures

4 / 20

Doing this will put unnecessary strain on your vehicles braking system.

Driving too slow

Exceeding the vehicles weight limit

Driving the speed limit

Proper maintenance

5 / 20

What might happen if the air lines are cross connected?

Any of these

The service brakes will not function correctly

The spring brakes won't work

The towing vehicle will lose air

6 / 20

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

Daily

Weekly

Quarterly

Monthly

7 / 20

Which tank should be drained first when draining the air tanks on an air brake system?

The second air tank

The first air tank

The last air tank

The supply tank

8 / 20

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

The second tank

The first tank

Supply tank

Wheel bearings

9 / 20

What is the "cut in" level?

The pressure level that triggers the governor to cut off the air compressor

The maximum speed the air brakes can stop at

The pressure level that triggers the governor to turn on the air compressor

The safest pressure level you can turn off the truck at

10 / 20

When inspecting your brakes, you must?

All of these

Drive the vehicle to level ground

Block the truck with wheel chocks

Apply spring brakes

11 / 20

The spring brake is designed for which situation?

Skids and parking

Loading skids into the trailer

Parking and emergencies

Skids and emergencies

12 / 20

To make sure the air tanks are securely attached to the vehicle you should?

Drive at full speed

Tap on them

Pull on them

Inspect them

13 / 20

Spring brake controls are usually what color?

Yellow

Red

Orange

Blue

14 / 20

Spring brakes will begin to apply when the pressure starts to drop below?

551 kPa (80 psi)

413 kPa (60 psi)

380 kPa (55 psi)

242 kPs (35 psi)

15 / 20

A vehicle should have wheel chocks or blocks securing it in place during inspection if...?

The driver leaves the cab without applying the parking brake

The driver is not within 50 m of the vehicle

The driver leaves the cab under any circumstances

Any of these apply

16 / 20

The full capacity of the air brake system must be available when?

When traveling at high speed

When going downhill

In city traffic

At all times

17 / 20

Which can contaminate a brake systems air lines?

Water and salt

Dust

Dirt

Grease and oil

18 / 20

The supply tank should discharge more moisture than any other tank?

True

False

19 / 20

Activation of trailer spring brakes can be checked by?

Applying slight engine power

Gunning it

Rocking the truck back and forth

Pulling the trailer air valve

20 / 20

Th design of the wedge brake system allows them to?

Self adust

Self isolate

Self lubricate

Self seal

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More PEI Commercial Driving 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.