Ontario Air Brake Test 05

Taking the Ontario air brake practice test is an essential step for anyone seeking to obtain a commercial driver’s license in the province. This test assesses the knowledge of individuals on air brake systems and how to use them in real-world scenarios. The test comprises of multiple choice questions, which cover topics such as air brake system components, maintenance, and emergency procedures. It is essential for individuals to familiarize themselves adequately with the content of the air brake test using the official study guide, as it contains critical information that they will need to pass the assessment. Additionally, taking practice tests can help to identify areas of weakness and provide an opportunity for improvement. By faithfully following the guidelines provided in the official study material and practicing regularly, individuals can increase their chances of success on the actual Ontario air brake test.

1 / 30

Is your speed is doubled, the stopping distance is...

The same

Quadrupled

Tripled

Doubled

2 / 30

Which statement is false? The following components are much easier to see and identify on S-cam brakes

Pushrod

Slack adjuster

The shaft portion of the 'S' camshaft

Camshaft rollers

3 / 30

If the vehicle weight is doubled, the stopping distance is...

Quadrupled

Doubled

The same

Tripled

4 / 30

To prevent all of the air from being lost, the trailer supply valve is designed to do what?

Warn the driver

Jam

Close automatically

Close partially

5 / 30

Which of the following is not a component of the S-cam air brakes?

Pushrods

Brake shoes

Calipers

Brake drums

6 / 30

What do anchor springs do?

They push the spring brakes back in position

None of the above

They clear the brake chambers

They hold the brake shoes in position at the anchor end

7 / 30

If you double your vehicle weight and double your speed, how much does your stopping distance increases by?

Four times

Five times

Eight times

Six times

8 / 30

What is the problem of overloading a vehicle?

All of the above

Takes longer to accelerate

It can cause it to lose its braking ability

More difficult to use the mirrors

9 / 30

When pushrod stroke exceeds the adjustment limit, what does this mean?

The brakes are out of adjustment

The brakes will need to be replaced

It can cause a flat tire

The brakes will fail

10 / 30

For wedge brakes, the stroke of the brake chamber pushrod slides a wedge between the brake shoes, forcing them where?

None of the above

Inward to the shoes

Outward against the drum

Outward toward the rotor

11 / 30

What controls the tractor protection valve?

The trailer supply valve

The driver

None of the above

The foot valve

12 / 30

Is it likely that you will notice a small loss of braking ability during normal driving?

Very likely

Remotely

Not likely

Only during poor weather conditions

13 / 30

Can trailers with spring brake priority be towed without waiting for the service brake air tanks to fill?

Yes

Only at low speed

Only on private property until the tanks fill

14 / 30

Which is not a type of foundation brake?

Disc brakes

Wedge brakes

S-cam brakes

Cable brakes

15 / 30

On disc brakes, the brake rotor is only partially visible because the wheel, caliper and what else is covering it?

Tires

Nothing

Wheel hubs

Dust shields

16 / 30

Where are many of the parts of an 'S' cam brake located?

On the axle

In the wheel

Above the wheel

None of the above

17 / 30

Is full brake capacity often needed during normal conditions?

Always

Only during wet conditions

Only with full loads

18 / 30

What will ensure that the brake chamber always produces the necessary force?

Proper brake adjustment

Higher rpm on the engine

Bigger compressor

Properly inflated tires

19 / 30

What are anti-lock braking systems (ABS) designed to do?

It will sense the speed of the wheels on a vehicle when an abnormal drop in wheel speed, causing the brake force to be reduced to that wheel

To shorten the stop in an emergency

It allows the brakes to be pumped to come to a stop

None of the above

20 / 30

What happens when a wheel locks and a tire skids?

The tire goes flat

A vehicle loses steering control and directional stability

All of the above

A vehicle makes an abrupt stop

21 / 30

Can brake temperatures become so severe they cause damage to brake components?

Only if brake parts are old

Yes

Only if brake parts are missing

22 / 30

What happens to the brake force produced at a wheel when the stroke of its brake chamber pushrod becomes excessive?

It remains the same

It increases significantly

It drops significantly

It becomes intermittent

23 / 30

The Ontario Highway Traffic Act and regulations require vehicles with air brakes to be checked at least...

Daily

Three tires daily

Every 48 hours

Weekly

24 / 30

Which of the following is not a component of disc air brakes?

Rotors

Return springs

Calipers

Brake pads

25 / 30

Can an air brake system be designed to work with several designs of foundation brake subsystems, even on the same vehicle?

Depends on the age of the vehicle

Depends on the type of vehicle

Yes

Not

26 / 30

Which of the following is not a factor that affect how your vehicle's brakes work?

The speed and weight of your vehicle

The type of load being carried

Brake adjustment

Anti-lock braking systems

27 / 30

What is the purpose of the brake spider?

It houses the brake chambers

It connects the slack adjuster to the pushrod

It serves as the main mounting base for the brake shoes

It holds the brake rotors in place

28 / 30

As brake components heat up, you may experience a reduction in their effectiveness and find that you need to press harder on the brake pedal to develop enough brake force. This is known as...

None of the above

Relapse

Brake fade

Downforce

29 / 30

Which statement is false? The air pressure may drop due to one of the following reasons...

The trailer supply line ruptures

The generator keeps running

The driver parks the vehicle and closes the trailer supply valve

The trailer supply line becomes disconnected for some reason

30 / 30

Which statement is false? The vehicle loses some of its ability to stop during the following conditions...

Long downhill grades

Higher speeds

Heavier loads

Uphill grades

Your score is

Ontario Air Brake Test 05

About

Practice Tests

Getting a License

Get In Touch