PEI Commercial Drivers License Air Brakes Practice Test 3

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PEI Air Brakes Practice Test 3

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

1 / 20

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

Unbalanced braking

Efficient stopping

More power than necessary

Unbalanced weight

2 / 20

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

Tire treads

Air brakes

Sleepy drivers

Over weight limits

3 / 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

2 mins

4 mins

5 mins

4 / 20

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

The foundation brake components

The air compressor

The air lines

The pressure gauge

5 / 20

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

Twist it to the right

Pull out the control

Twist it to the left

Press down the pedal

6 / 20

What is the best way to inspect an air compressor?

With the engine off

With the engine on and in high gear

With the engine on in neutral

With the engine on in first gear

7 / 20

Which colour represent the trailer supply line?

White

Blue

Yellow

Red

8 / 20

The best way to reduce rough and abrupt braking is to?

Drive on highways only

Wear a helmet in the cab

Ride the brake pedal all the time

Follow other vehicles at a safe distance

9 / 20

When can you adjust your own air brakes?

If it is an emergency

If you are certified or trained

When you are on the road

Never

10 / 20

What is an ABS system?

Increases braking power

Prevents wheel lock

Automatically brakes when needed

Reduces stopping distance

11 / 20

What happens to the air valve when you press down the brake?

The air valve signals the compressor to turn on

The air valve is operated by the gas pedal

The air valve closes, leaving the brake pressure the same

The air valve opens letting more air into the brakes

12 / 20

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

None of these

A service brake priority trailer

Both of these

A spring brake priority trailer

13 / 20

Why are their two service tanks?

Incase you need more stopping power

For efficiency

For safety

For fuel economy

14 / 20

The air system pressure range must be between _________.

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

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

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

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

15 / 20

Which of these vehicles would usually have an air brake system?

A compact car

A hearse

A school bus

A pickup truck

16 / 20

Where is the brake lining fastened?

The struts

The rim of the tire

The wheel well

The brake shoe

17 / 20

To measure the time it takes to build up pressure in the air system, the engine should be idling between _______________.

600 to 900 RPM

800 to 1000 RPM

1000 to 2000 RPM

200 to 500 RPM

18 / 20

Where are the vehicles air tanks located?

Inside the wheel

In the cab of the vehicle

Underneath around the frame

In the engine compartment

19 / 20

Which of these is not part of an air brake system?

Drum

Lining

Rotors

Shoe

20 / 20

Who can perform adjustments and maintenance on your air brake system?

Anyone

Your employer

You can if you are the owner

Only certified technicians

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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

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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.