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

Slack adjuster

Camshaft rollers

Pushrod

The shaft portion of the 'S' camshaft

2 / 30

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

It increases significantly

It drops significantly

It remains the same

It becomes intermittent

3 / 30

What do anchor springs do?

None of the above

They hold the brake shoes in position at the anchor end

They clear the brake chambers

They push the spring brakes back in position

4 / 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

Outward against the drum

Inward to the shoes

None of the above

5 / 30

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

Return springs

Brake pads

Calipers

Rotors

6 / 30

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

Wheel hubs

Tires

Nothing

Dust shields

7 / 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

8 / 30

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

Above the wheel

On the axle

None of the above

In the wheel

9 / 30

Which is not a type of foundation brake?

Disc brakes

Wedge brakes

Cable brakes

S-cam brakes

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

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

Proper brake adjustment

Bigger compressor

Properly inflated tires

Higher rpm on the engine

12 / 30

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

Jam

Close automatically

Close partially

Warn the driver

13 / 30

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

Uphill grades

Heavier loads

Higher speeds

Long downhill grades

14 / 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

None of the above

To shorten the stop in an emergency

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

15 / 30

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

Four times

Six times

Eight times

Five times

16 / 30

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

Three tires daily

Every 48 hours

Weekly

Daily

17 / 30

Is full brake capacity often needed during normal conditions?

Only during wet conditions

Only with full loads

Always

18 / 30

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

The brakes will fail

It can cause a flat tire

The brakes will need to be replaced

The brakes are out of adjustment

19 / 30

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

Calipers

Brake shoes

Pushrods

Brake drums

20 / 30

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

The type of load being carried

Anti-lock braking systems

The speed and weight of your vehicle

Brake adjustment

21 / 30

What is the problem of overloading a vehicle?

It can cause it to lose its braking ability

Takes longer to accelerate

All of the above

More difficult to use the mirrors

22 / 30

What is the purpose of the brake spider?

It houses the brake chambers

It serves as the main mounting base for the brake shoes

It holds the brake rotors in place

It connects the slack adjuster to the pushrod

23 / 30

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

Very likely

Not likely

Remotely

Only during poor weather conditions

24 / 30

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

The same

Quadrupled

Tripled

Doubled

25 / 30

What controls the tractor protection valve?

The trailer supply valve

The foot valve

The driver

None of the above

26 / 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

Downforce

Relapse

Brake fade

27 / 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

28 / 30

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

Only if brake parts are missing

Yes

Only if brake parts are old

29 / 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

Not

Depends on the type of vehicle

Yes

30 / 30

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

Quadrupled

The same

Doubled

Tripled

Your score is

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Ontario Air Brake Test 05

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