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

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

Only on private property until the tanks fill

Only at low speed

Yes

2 / 30

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

The trailer supply line becomes disconnected for some reason

The driver parks the vehicle and closes the trailer supply valve

The trailer supply line ruptures

The generator keeps running

3 / 30

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

Dust shields

Tires

Nothing

Wheel hubs

4 / 30

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

Quadrupled

Doubled

The same

Tripled

5 / 30

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

Outward toward the rotor

None of the above

Outward against the drum

Inward to the shoes

6 / 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

7 / 30

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

The type of load being carried

Brake adjustment

Anti-lock braking systems

The speed and weight of your vehicle

8 / 30

Is full brake capacity often needed during normal conditions?

Always

Only during wet conditions

Only with full loads

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

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

None of the above

10 / 30

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

Jam

Close automatically

Warn the driver

Close partially

11 / 30

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

Pushrods

Brake drums

Brake shoes

Calipers

12 / 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...

Relapse

Brake fade

Downforce

None of the above

13 / 30

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

Higher speeds

Long downhill grades

Heavier loads

Uphill grades

14 / 30

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

On the axle

In the wheel

None of the above

Above the wheel

15 / 30

Which is not a type of foundation brake?

Disc brakes

S-cam brakes

Cable brakes

Wedge brakes

16 / 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 type of vehicle

Yes

Not

Depends on the age of the vehicle

17 / 30

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

The same

Doubled

Tripled

Quadrupled

18 / 30

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

Not likely

Only during poor weather conditions

Very likely

Remotely

19 / 30

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

Eight times

Six times

Five times

Four times

20 / 30

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

Pushrod

Camshaft rollers

The shaft portion of the 'S' camshaft

Slack adjuster

21 / 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

22 / 30

What is the problem of overloading a vehicle?

Takes longer to accelerate

All of the above

More difficult to use the mirrors

It can cause it to lose its braking ability

23 / 30

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

Rotors

Return springs

Calipers

Brake pads

24 / 30

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

Weekly

Three tires daily

Daily

Every 48 hours

25 / 30

What happens when a wheel locks and a tire skids?

A vehicle makes an abrupt stop

All of the above

The tire goes flat

A vehicle loses steering control and directional stability

26 / 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

27 / 30

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

Only if brake parts are missing

Only if brake parts are old

Yes

28 / 30

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

Bigger compressor

Proper brake adjustment

Higher rpm on the engine

Properly inflated tires

29 / 30

What controls the tractor protection valve?

None of the above

The trailer supply valve

The foot valve

The driver

30 / 30

What is the purpose of the brake spider?

It connects the slack adjuster to the pushrod

It serves as the main mounting base for the brake shoes

It houses the brake chambers

It holds the brake rotors in place

Your score is

Ontario Air Brake Test 05

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