Saskatchewan Commercial Drivers License Air Brakes Practice Test 4

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Saskatchewan Air Brakes Practice Test 4

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

1 / 20

Where are the air brake chambers located?

At the back wheels

At each wheel

At the front wheels

Near the compressor

2 / 20

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

Steel toe boots, safety glasses, hard hats

Sandals and shorts

Dust mask, safety glasses

Shorts and Crocs

3 / 20

What function does the alcohol evaporator perform?

Prevents overheating

Prevents moisture build ups in the brake lines

Prevents the system from building up too much pressure

Prevents freezing

4 / 20

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

A spring brake priority trailer

Both of these

None of these

A service brake priority trailer

5 / 20

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

414 kPa (60 psi)

514 kPa (74 psi)

242 kPa (35 psi)

690 kPa (100 psi)

6 / 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

21 kPa / minute

37 kPa / minute

50 kPa / minute

7 / 20

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

Pull out the control

Press down the pedal

Twist it to the left

Twist it to the right

8 / 20

Most air brake systems will use automatic valves to?

Reduce pressure at the back wheels

Increase pressure at the front wheels

Reduce pressure at the front wheels

Increase pressure at the back wheels

9 / 20

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

380 kPa (55 psi)

413 kPa (60 psi)

551 kPa (80 psi)

242 kPs (35 psi)

10 / 20

What is an ABS system?

Automatically brakes when needed

Increases braking power

Reduces stopping distance

Prevents wheel lock

11 / 20

Cut out pressure level must never exceed __________.

1138 kPa (165 psi)

690 kPa (100 psi)

1000 kPa (145 psi)

862 kPa (125 psi)

12 / 20

Activation of trailer spring brakes can be checked by?

Rocking the truck back and forth

Pulling the trailer air valve

Gunning it

Applying slight engine power

13 / 20

What is a "glad hand"?

A coupling device

The crank for the trailer legs

A dance move

An emergency supply line

14 / 20

Which colour usually means the air line is a service line?

Black

Blue

Yellow

Red

15 / 20

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

Your employer

Anyone

Only certified technicians

You can if you are the owner

16 / 20

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

A school bus

A hearse

A compact car

A pickup truck

17 / 20

What might happen if the air lines are cross connected?

The spring brakes won't work

The service brakes will not function correctly

Any of these

The towing vehicle will lose air

18 / 20

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

Tire treads

Sleepy drivers

Air brakes

Over weight limits

19 / 20

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

Cold air temperatures

Overextension of the brake chamber pushrod

Damp road conditions

High pressure in the compressed air tanks

20 / 20

Which statement is true of spring brakes?

They are not as strong as service brakes

They can be used in lieu of service brakes

They are stronger than service brakes

They are as strong as service brakes

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More Saskatchewan Commercial Driving Practice Tests

Saskatchewan Class 1 Practice Tests

Saskatchewan Class 3 Practice Tests

Air Brakes Practice Tests

Saskatchewan Class 4 Practice Tests

Saskatchewan 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.