PEI Commercial Drivers License Air Brakes Practice Test 4

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PEI Air Brakes Practice Test 4

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

1 / 20

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

Wheel bearings

The second tank

The first tank

Supply tank

2 / 20

Where is the brake lining fastened?

The struts

The rim of the tire

The brake shoe

The wheel well

3 / 20

Which statement is true of spring brakes?

They are not as strong as service brakes

They are stronger than service brakes

They are as strong as service brakes

They can be used in lieu of service brakes

4 / 20

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

Monthly

Daily

Quarterly

Weekly

5 / 20

What is the most frequent reason a vehicle is removed from service?

Over weight limits

Tire treads

Air brakes

Sleepy drivers

6 / 20

What should you do when the air brakes low pressure warning comes on?

Call the police to let them know

Check it at the nearest garage

Slow down but keep driving

Stop safely and immediately

7 / 20

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

Press down the pedal

Twist it to the right

Twist it to the left

Pull out the control

8 / 20

What is a "glad hand"?

A coupling device

A dance move

An emergency supply line

The crank for the trailer legs

9 / 20

How long should it take for the air pressure to rise from 587kPa to 690 kPa after the pressure had fallen below 552 kPa?

1 min

4 mins

5 mins

2 mins

10 / 20

What is the "cut in" level?

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

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

11 / 20

What is the first thing to look at when inspecting an air brake system?

The pressure gauge

The air compressor

The foundation brake components

The air lines

12 / 20

What is the service brake used for?

Normal braking

Drifting

None of these

Emergency braking

13 / 20

What function does the alcohol evaporator perform?

Prevents the system from building up too much pressure

Prevents overheating

Prevents freezing

Prevents moisture build ups in the brake lines

14 / 20

What is the "cut-out" level?

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

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

The maximum speed the air brakes can stop at

The safest pressure level you can turn off the truck at

15 / 20

What is the best way to inspect an air compressor?

With the engine on in first gear

With the engine off

With the engine on and in high gear

With the engine on in neutral

16 / 20

Test the low pressure alarm with the air pressure above __________.

551 kPa (80 psi)

620 kPa (90 psi)

413 kPa (60 psi)

827 kPa (120 psi)

17 / 20

What might happen if the air lines are cross connected?

The towing vehicle will lose air

The service brakes will not function correctly

Any of these

The spring brakes won't work

18 / 20

Correct belt tension for an air compressor can be determined by

A karate chop

Finger pressure

Firm hand pressure

A tight squeeze of the hand

19 / 20

You test a tractor protection valve by removing the service line and?

Driving 150 metres

Switching the gears

Engaging the brake pedal

Starting the truck

20 / 20

If the outer layer of an airline is damaged, but the inner layer is ok, what should you do?

Leave it alone, it's fine

Cover it with tape

Turn off your air brakes

Replace the line

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More PEI Commercial Driving Practice Tests

PEI Class 1 Practice Tests

PEI Class 3 Practice Tests

Air Brakes Practice Tests

PEI Class 4 Practice Tests

PEI Road Signs Test

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.