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?

The speed and weight of your vehicle

Anti-lock braking systems

Brake adjustment

The type of load being carried

2 / 30

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

Yes

Only on private property until the tanks fill

Only at low speed

3 / 30

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

Long downhill grades

Higher speeds

Uphill grades

Heavier loads

4 / 30

What is the purpose of the brake spider?

It connects the slack adjuster to the pushrod

It houses the brake chambers

It holds the brake rotors in place

It serves as the main mounting base for the brake shoes

5 / 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

6 / 30

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

To shorten the stop in an emergency

None of the above

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

7 / 30

Which is not a type of foundation brake?

Cable brakes

Disc brakes

S-cam brakes

Wedge brakes

8 / 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

9 / 30

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

Remotely

Only during poor weather conditions

Not likely

Very likely

10 / 30

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

Pushrods

Calipers

Brake shoes

Brake drums

11 / 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

Outward toward the rotor

Inward to the shoes

Outward against the drum

12 / 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

13 / 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 trailer supply line ruptures

The trailer supply line becomes disconnected for some reason

The generator keeps running

14 / 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 becomes intermittent

It remains the same

15 / 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...

Downforce

Brake fade

Relapse

None of the above

16 / 30

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

The shaft portion of the 'S' camshaft

Slack adjuster

Camshaft rollers

Pushrod

17 / 30

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

Tripled

The same

Quadrupled

Doubled

18 / 30

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

Tires

Wheel hubs

Dust shields

Nothing

19 / 30

Is full brake capacity often needed during normal conditions?

Only during wet conditions

Only with full loads

Always

20 / 30

What controls the tractor protection valve?

The foot valve

The driver

The trailer supply valve

None of the above

21 / 30

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

Quadrupled

Tripled

The same

Doubled

22 / 30

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

Close automatically

Close partially

Jam

Warn the driver

23 / 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

Not

Depends on the age of the vehicle

24 / 30

What happens when a wheel locks and a tire skids?

All of the above

A vehicle makes an abrupt stop

A vehicle loses steering control and directional stability

The tire goes flat

25 / 30

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

Four times

Six times

Five times

Eight times

26 / 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

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

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

Every 48 hours

Daily

Weekly

Three tires daily

29 / 30

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

Rotors

Brake pads

Return springs

Calipers

30 / 30

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

In the wheel

On the axle

Above the wheel

None of the above

Your score is

Ontario Air Brake Test 05

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