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

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

Anti-lock braking systems

Brake adjustment

The type of load being carried

The speed and weight of your vehicle

2 / 30

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

Close partially

Warn the driver

Close automatically

Jam

3 / 30

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

Uphill grades

Heavier loads

Long downhill grades

Higher speeds

4 / 30

Which is not a type of foundation brake?

Disc brakes

Cable brakes

Wedge brakes

S-cam brakes

5 / 30

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

It drops significantly

It increases significantly

It remains the same

It becomes intermittent

6 / 30

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

It can cause a flat tire

The brakes will need to be replaced

The brakes are out of adjustment

The brakes will fail

7 / 30

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

Only at low speed

Only on private property until the tanks fill

Yes

8 / 30

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

Doubled

The same

Quadrupled

Tripled

9 / 30

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

To shorten the stop in an emergency

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

None of the above

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

10 / 30

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

The driver parks the vehicle and closes the trailer supply valve

The generator keeps running

The trailer supply line ruptures

The trailer supply line becomes disconnected for some reason

11 / 30

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

Brake pads

Rotors

Calipers

Return springs

12 / 30

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

Brake shoes

Brake drums

Pushrods

Calipers

13 / 30

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

Camshaft rollers

Slack adjuster

The shaft portion of the 'S' camshaft

Pushrod

14 / 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

Yes

Not

Depends on the type of vehicle

15 / 30

Is full brake capacity often needed during normal conditions?

Only during wet conditions

Always

Only with full loads

16 / 30

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

Remotely

Very likely

Not likely

Only during poor weather conditions

17 / 30

What is the problem of overloading a vehicle?

More difficult to use the mirrors

Takes longer to accelerate

All of the above

It can cause it to lose its braking ability

18 / 30

What happens when a wheel locks and a tire skids?

A vehicle loses steering control and directional stability

A vehicle makes an abrupt stop

All of the above

The tire goes flat

19 / 30

What is the purpose of the brake spider?

It connects the slack adjuster to the pushrod

It holds the brake rotors in place

It houses the brake chambers

It serves as the main mounting base for the brake shoes

20 / 30

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

Bigger compressor

Properly inflated tires

Proper brake adjustment

Higher rpm on the engine

21 / 30

What do anchor springs do?

None of the above

They push the spring brakes back in position

They clear the brake chambers

They hold the brake shoes in position at the anchor end

22 / 30

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

The same

Tripled

Quadrupled

Doubled

23 / 30

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

Five times

Eight times

Six times

Four times

24 / 30

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

Yes

Only if brake parts are old

Only if brake parts are missing

25 / 30

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

Outward against the drum

Inward to the shoes

Outward toward the rotor

None of the above

26 / 30

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

Dust shields

Nothing

Wheel hubs

Tires

27 / 30

What controls the tractor protection valve?

The trailer supply valve

The foot valve

The driver

None of the above

28 / 30

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

Weekly

Every 48 hours

Daily

Three tires daily

29 / 30

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

On the axle

None of the above

Above the wheel

In the wheel

30 / 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...

Brake fade

Downforce

None of the above

Relapse

Your score is

Ontario Air Brake Test 05

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