Manitoba Commercial Drivers License Air Brakes Practice Test 3

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Manitoba Air Brakes Practice Test 3

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

1 / 20

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

Tire treads

Air brakes

Over weight limits

Sleepy drivers

2 / 20

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

Dust mask, safety glasses

Shorts and Crocs

Sandals and shorts

Steel toe boots, safety glasses, hard hats

3 / 20

What function does the alcohol evaporator perform?

Prevents moisture build ups in the brake lines

Prevents freezing

Prevents the system from building up too much pressure

Prevents overheating

4 / 20

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

Disconnected supply line

A broken air compressor

All of these

A hole in the supply line

5 / 20

Which colour represent the trailer supply line?

Yellow

Red

White

Blue

6 / 20

Activation of trailer spring brakes can be checked by?

Applying slight engine power

Rocking the truck back and forth

Gunning it

Pulling the trailer air valve

7 / 20

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

Anyone

Your employer

Only certified technicians

You can if you are the owner

8 / 20

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

242 kPs (35 psi)

413 kPa (60 psi)

380 kPa (55 psi)

551 kPa (80 psi)

9 / 20

Where is the air pressure gauge for the air brake system?

Beside the air compressor

On the vehicle dashboard

Beside the supply tank

On each wheels brake

10 / 20

Correct belt tension for an air compressor can be determined by

Firm hand pressure

A karate chop

Finger pressure

A tight squeeze of the hand

11 / 20

When brakes become overheated they also become?

None of the above

Extra efficient

Dangerously inefficient

Very hot

12 / 20

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

Lining

Rotors

Shoe

Drum

13 / 20

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

Twist it to the right

Press down the pedal

Pull out the control

Twist it to the left

14 / 20

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

A compact car

A pickup truck

A school bus

A hearse

15 / 20

Why are their two service tanks?

For efficiency

For fuel economy

Incase you need more stopping power

For safety

16 / 20

What is a "glad hand"?

The crank for the trailer legs

A dance move

A coupling device

An emergency supply line

17 / 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?

5 mins

1 min

2 mins

4 mins

18 / 20

What is an ABS system?

Reduces stopping distance

Increases braking power

Prevents wheel lock

Automatically brakes when needed

19 / 20

Cut out pressure level must never exceed __________.

1138 kPa (165 psi)

690 kPa (100 psi)

1000 kPa (145 psi)

862 kPa (125 psi)

20 / 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

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More Manitoba Commercial Driving Practice Tests

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Air Brakes 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.