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

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

Quadrupled

Doubled

Tripled

The same

2 / 30

What do anchor springs do?

They push the spring brakes back in position

They hold the brake shoes in position at the anchor end

They clear the brake chambers

None of the above

3 / 30

Which is not a type of foundation brake?

S-cam brakes

Wedge brakes

Disc brakes

Cable brakes

4 / 30

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

Brake shoes

Brake drums

Calipers

Pushrods

5 / 30

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

Higher speeds

Uphill grades

Heavier loads

Long downhill grades

6 / 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

7 / 30

What controls the tractor protection valve?

The trailer supply valve

None of the above

The foot valve

The driver

8 / 30

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

Only at low speed

Yes

Only on private property until the tanks fill

9 / 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

Brake fade

Relapse

Downforce

10 / 30

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

The trailer supply line ruptures

The trailer supply line becomes disconnected for some reason

The generator keeps running

The driver parks the vehicle and closes the trailer supply valve

11 / 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

12 / 30

Is full brake capacity often needed during normal conditions?

Only during wet conditions

Only with full loads

Always

13 / 30

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

Every 48 hours

Three tires daily

Weekly

Daily

14 / 30

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

Return springs

Rotors

Calipers

Brake pads

15 / 30

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

Wheel hubs

Dust shields

Tires

Nothing

16 / 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

17 / 30

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

The same

Quadrupled

Tripled

Doubled

18 / 30

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

In the wheel

None of the above

Above the wheel

On the axle

19 / 30

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

It can cause a flat tire

The brakes will fail

The brakes are out of adjustment

The brakes will need to be replaced

20 / 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 holds the brake rotors in place

It houses the brake chambers

21 / 30

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

Higher rpm on the engine

Bigger compressor

Proper brake adjustment

Properly inflated tires

22 / 30

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

Yes

Depends on the type of vehicle

Depends on the age of the vehicle

Not

23 / 30

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

The speed and weight of your vehicle

Brake adjustment

The type of load being carried

Anti-lock braking systems

24 / 30

What is the problem of overloading a vehicle?

More difficult to use the mirrors

Takes longer to accelerate

It can cause it to lose its braking ability

All of the above

25 / 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

Inward to the shoes

Outward against the drum

None of the above

26 / 30

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

None of the above

To shorten the stop in an emergency

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

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

27 / 30

What happens when a wheel locks and a tire skids?

A vehicle loses steering control and directional stability

All of the above

A vehicle makes an abrupt stop

The tire goes flat

28 / 30

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

Close partially

Close automatically

Warn the driver

Jam

29 / 30

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

Five times

Eight times

Four times

Six times

30 / 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 becomes intermittent

It drops significantly

It increases significantly

Your score is

Ontario Air Brake Test 05

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