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

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

Engaging the brake pedal

Switching the gears

Driving 150 metres

Starting the truck

2 / 20

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

A hearse

A school bus

A compact car

A pickup truck

3 / 20

Why are their two service tanks?

For fuel economy

For efficiency

For safety

Incase you need more stopping power

4 / 20

Which statement is true of spring brakes?

They are as strong as service brakes

They are not as strong as service brakes

They can be used in lieu of service brakes

They are stronger than service brakes

5 / 20

The pushrod stroke occurs when compressed air enters the?

Engine block

Air compressor

Supply tank

Brake chamber

6 / 20

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

Tap on them

Pull on them

Inspect them

Drive at full speed

7 / 20

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

413 kPa (60 psi)

242 kPs (35 psi)

551 kPa (80 psi)

380 kPa (55 psi)

8 / 20

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

Tire treads

Air brakes

Sleepy drivers

Over weight limits

9 / 20

When can you adjust your own air brakes?

If you are certified or trained

When you are on the road

If it is an emergency

Never

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

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

Cover the chamber in soapy water

Release the spring brakes and apply the service brake

Fill the compressor

Start the engine

12 / 20

What does a governor do in an air brake system?

Tells the other brakes what do to

Regulates the air pressure

Limits the speed by using automatic braking

Regulates the tire pressure

13 / 20

Where are the vehicles air tanks located?

Inside the wheel

Underneath around the frame

In the engine compartment

In the cab of the vehicle

14 / 20

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

242 kPa (35 psi)

514 kPa (74 psi)

414 kPa (60 psi)

690 kPa (100 psi)

15 / 20

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

A spring brake priority trailer

A service brake priority trailer

None of these

Both of these

16 / 20

What is not a factor in how well your air brake system works?

Weight of the driver

Brake adjustments

Weight of the vehicle

Driving speed

17 / 20

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

Red

Yellow

Blue

Black

18 / 20

Which colour represent the trailer supply line?

Blue

Yellow

Red

White

19 / 20

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

Because it can be dangerous

So you're not suprised

In case anyone ever asks

Because you should know your truck

20 / 20

What is the "cut in" 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

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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.