PEI Commercial Drivers License Air Brakes Practice Test 2

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PEI Air Brakes Practice Test 2

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

1 / 20

What does a governor do in an air brake system?

Limits the speed by using automatic braking

Tells the other brakes what do to

Regulates the air pressure

Regulates the tire pressure

2 / 20

What is not a factor in how well your air brake system works?

Brake adjustments

Weight of the vehicle

Driving speed

Weight of the driver

3 / 20

The pushrod stroke occurs when compressed air enters the?

Air compressor

Supply tank

Engine block

Brake chamber

4 / 20

When you are going twice the speed, your brakes will need to work ________ time harder to stop your vehicle.

Four

Three

Five

Two

5 / 20

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

Replace the line

Leave it alone, it's fine

Cover it with tape

Turn off your air brakes

6 / 20

When inspecting an air brake system, the person inspecting should wear?

Sandals and shorts

Steel toe boots, safety glasses, hard hats

Dust mask, safety glasses

Shorts and Crocs

7 / 20

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

10 minutes

1 minute

2 minutes

5 minutes

8 / 20

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

514 kPa (74 psi)

242 kPa (35 psi)

414 kPa (60 psi)

690 kPa (100 psi)

9 / 20

Before inspecting for air brake chamber leaks, you must __________.

Cover the chamber in soapy water

Start the engine

Release the spring brakes and apply the service brake

Fill the compressor

10 / 20

The low air pressure warning device needs to be replaced or adjusted if it does not trigger at a minimum level of?

551 kPa (80 psi)

413 kPa (60 psi)

242 kPs (35 psi)

380 kPa (55 psi)

11 / 20

When you are testing your spring brakes, the test is considered a success when?

The truck can move 1.5 meters

The vehicle only moves slightly back and forth

The front wheels are blocked

The wheels can only turn a half revolution

12 / 20

Correct belt tension for an air compressor can be determined by

Firm hand pressure

A tight squeeze of the hand

Finger pressure

A karate chop

13 / 20

Any commercial vehicle with air brakes must not lose system pressure with the brakes applied at a rate of more than?

19 kPa / minute

50 kPa / minute

37 kPa / minute

21 kPa / minute

14 / 20

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

Stop safely and immediately

Check it at the nearest garage

Slow down but keep driving

Call the police to let them know

15 / 20

Where are the air brake chambers located?

At the front wheels

At the back wheels

Near the compressor

At each wheel

16 / 20

What function does the alcohol evaporator perform?

Prevents freezing

Prevents the system from building up too much pressure

Prevents moisture build ups in the brake lines

Prevents overheating

17 / 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

18 / 20

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

620 kPa (90 psi)

551 kPa (80 psi)

827 kPa (120 psi)

413 kPa (60 psi)

19 / 20

What can cause the air pressure in the air brake system to drop?

A broken air compressor

A hole in the supply line

Disconnected supply line

All of these

20 / 20

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

Because you should know your truck

In case anyone ever asks

So you're not suprised

Because it can be dangerous

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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.