Nova Scotia Commercial Drivers License Air Brakes Practice Test 1

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Nova Scotia Air Brakes Practice Test 1

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

1 / 20

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

380 kPa (55 psi)

242 kPs (35 psi)

413 kPa (60 psi)

551 kPa (80 psi)

2 / 20

The pushrod stroke occurs when compressed air enters the?

Engine block

Air compressor

Supply tank

Brake chamber

3 / 20

Why are their two service tanks?

For safety

For efficiency

Incase you need more stopping power

For fuel economy

4 / 20

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

Yellow

Blue

Black

Red

5 / 20

Before inspecting for air brake chamber leaks, you must __________.

Start the engine

Release the spring brakes and apply the service brake

Cover the chamber in soapy water

Fill the compressor

6 / 20

What is the "cut in" level?

The maximum speed the air brakes can stop at

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

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

The safest pressure level you can turn off the truck at

7 / 20

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

Air brakes

Sleepy drivers

Over weight limits

Tire treads

8 / 20

You test a tractor protection valve by removing the service line and?

Engaging the brake pedal

Driving 150 metres

Starting the truck

Switching the gears

9 / 20

Where are the vehicles air tanks located?

Underneath around the frame

Inside the wheel

In the cab of the vehicle

In the engine compartment

10 / 20

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

Twist it to the left

Pull out the control

Press down the pedal

Twist it to the right

11 / 20

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

A pickup truck

A compact car

A school bus

A hearse

12 / 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

13 / 20

When can you adjust your own air brakes?

If it is an emergency

Never

When you are on the road

If you are certified or trained

14 / 20

Which statement is true of spring brakes?

They are not as strong as service brakes

They are stronger than service brakes

They can be used in lieu of service brakes

They are as strong as service brakes

15 / 20

To make sure the air tanks are securely attached to the vehicle you should?

Pull on them

Inspect them

Drive at full speed

Tap on them

16 / 20

What does a governor do in an air brake system?

Regulates the tire pressure

Limits the speed by using automatic braking

Regulates the air pressure

Tells the other brakes what do to

17 / 20

Which colour represent the trailer supply line?

Blue

White

Yellow

Red

18 / 20

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

690 kPa (100 psi)

514 kPa (74 psi)

242 kPa (35 psi)

414 kPa (60 psi)

19 / 20

Why is it important to know where your air system releases air pressure from?

So you're not suprised

In case anyone ever asks

Because you should know your truck

Because it can be dangerous

20 / 20

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

A service brake priority trailer

Both of these

A spring brake priority trailer

None of these

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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.