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

Cut in pressure level must never fall below __________.

551 kPa (80 psi)

345 kPa (50 psi)

413 kPa (60 psi)

690 kPa (100 psi)

2 / 20

What is an ABS system?

Increases braking power

Prevents wheel lock

Reduces stopping distance

Automatically brakes when needed

3 / 20

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

Call the police to let them know

Stop safely and immediately

Slow down but keep driving

Check it at the nearest garage

4 / 20

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

Rotors

Drum

Shoe

Lining

5 / 20

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

Beside the air compressor

Beside the supply tank

On the vehicle dashboard

On each wheels brake

6 / 20

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

Unbalanced braking

Unbalanced weight

Efficient stopping

More power than necessary

7 / 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)

242 kPs (35 psi)

380 kPa (55 psi)

413 kPa (60 psi)

8 / 20

What is the "cut-out" level?

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

9 / 20

What might happen if the air lines are cross connected?

The towing vehicle will lose air

The service brakes will not function correctly

The spring brakes won't work

Any of these

10 / 20

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

Five

Four

Three

Two

11 / 20

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

Cracks or other damage

New holes from wear and tear

All of the below

Mismatched slack adjuster lengths

12 / 20

Correct belt tension for an air compressor can be determined by

Firm hand pressure

A tight squeeze of the hand

A karate chop

Finger pressure

13 / 20

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

Follow other vehicles at a safe distance

Drive on highways only

Ride the brake pedal all the time

Wear a helmet in the cab

14 / 20

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

413 kPa (60 psi)

551 kPa (80 psi)

242 kPs (35 psi)

380 kPa (55 psi)

15 / 20

When inspecting your brakes, you must?

All of these

Drive the vehicle to level ground

Apply spring brakes

Block the truck with wheel chocks

16 / 20

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

Disconnected supply line

A broken air compressor

A hole in the supply line

All of these

17 / 20

The spring brake is designed for which situation?

Loading skids into the trailer

Skids and parking

Skids and emergencies

Parking and emergencies

18 / 20

The air system pressure range must be between _________.

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

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

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

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

19 / 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

20 / 20

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

413 kPa (60 psi)

620 kPa (90 psi)

551 kPa (80 psi)

827 kPa (120 psi)

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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.