Nova Scotia Commercial Drivers License Air Brakes Practice Test 2

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Nova Scotia Air Brakes Practice Test 2

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

1 / 20

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

Only certified technicians

You can if you are the owner

Your employer

Anyone

2 / 20

Cut in pressure level must never fall below __________.

551 kPa (80 psi)

690 kPa (100 psi)

413 kPa (60 psi)

345 kPa (50 psi)

3 / 20

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

All of these

Disconnected supply line

A hole in the supply line

A broken air compressor

4 / 20

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

Call the police to let them know

Slow down but keep driving

Stop safely and immediately

Check it at the nearest garage

5 / 20

What is the "cut-out" level?

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

The safest pressure level you can turn off the truck at

The maximum speed the air brakes can stop at

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

6 / 20

What might happen if the air lines are cross connected?

The service brakes will not function correctly

Any of these

The spring brakes won't work

The towing vehicle will lose air

7 / 20

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

On the vehicle dashboard

On each wheels brake

Beside the air compressor

Beside the supply tank

8 / 20

The spring brake is designed for which situation?

Skids and parking

Parking and emergencies

Loading skids into the trailer

Skids and emergencies

9 / 20

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

242 kPs (35 psi)

380 kPa (55 psi)

413 kPa (60 psi)

551 kPa (80 psi)

10 / 20

When inspecting your brakes, you must?

Drive the vehicle to level ground

All of these

Apply spring brakes

Block the truck with wheel chocks

11 / 20

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

551 kPa (80 psi)

827 kPa (120 psi)

620 kPa (90 psi)

413 kPa (60 psi)

12 / 20

The air system pressure range must be between _________.

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

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

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

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

13 / 20

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

242 kPs (35 psi)

551 kPa (80 psi)

413 kPa (60 psi)

380 kPa (55 psi)

14 / 20

You should be looking for this when checking your brake chambers?

Mismatched slack adjuster lengths

All of the below

New holes from wear and tear

Cracks or other damage

15 / 20

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

Five

Two

Four

Three

16 / 20

Correct belt tension for an air compressor can be determined by

A tight squeeze of the hand

Firm hand pressure

Finger pressure

A karate chop

17 / 20

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

Shoe

Lining

Rotors

Drum

18 / 20

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

Drive on highways only

Wear a helmet in the cab

Follow other vehicles at a safe distance

Ride the brake pedal all the time

19 / 20

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

Unbalanced braking

Unbalanced weight

More power than necessary

Efficient stopping

20 / 20

What is an ABS system?

Prevents wheel lock

Increases braking power

Automatically brakes when needed

Reduces stopping distance

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More Nova Scotia Commercial Driving Practice Tests

Nova Scotia Class 1 Practice Tests

Nova Scotia Class 3 Practice Tests

Air Brakes Practice Tests

Nova Scotia Class 4 Practice Tests

Nova Scotia 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.