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

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

2 / 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

Anti-lock braking systems

The type of load being carried

3 / 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 remains the same

It drops significantly

It becomes intermittent

4 / 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

5 / 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

6 / 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

None of the above

Relapse

7 / 30

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

Brake drums

Brake shoes

Calipers

Pushrods

8 / 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

9 / 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 connects the slack adjuster to the pushrod

It holds the brake rotors in place

10 / 30

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

Wheel hubs

Nothing

Tires

Dust shields

11 / 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 trailer supply line ruptures

The driver parks the vehicle and closes the trailer supply valve

The generator keeps running

12 / 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

13 / 30

What do anchor springs do?

They push the spring brakes back in position

They clear the brake chambers

None of the above

They hold the brake shoes in position at the anchor end

14 / 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

15 / 30

What controls the tractor protection valve?

The foot valve

The driver

The trailer supply valve

None of the above

16 / 30

What is the problem of overloading a vehicle?

It can cause it to lose its braking ability

Takes longer to accelerate

More difficult to use the mirrors

All of the above

17 / 30

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

The same

Quadrupled

Tripled

Doubled

18 / 30

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

Bigger compressor

Higher rpm on the engine

Proper brake adjustment

Properly inflated tires

19 / 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

Inward to the shoes

Outward against the drum

Outward toward the rotor

20 / 30

Which is not a type of foundation brake?

Disc brakes

Wedge brakes

S-cam brakes

Cable brakes

21 / 30

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

On the axle

None of the above

In the wheel

Above the wheel

22 / 30

Is full brake capacity often needed during normal conditions?

Always

Only with full loads

Only during wet conditions

23 / 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

Yes

Only at low speed

24 / 30

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

Warn the driver

Close partially

Close automatically

Jam

25 / 30

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

Four times

Five times

Six times

Eight times

26 / 30

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

The brakes will fail

It can cause a flat tire

The brakes are out of adjustment

The brakes will need to be replaced

27 / 30

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

Remotely

Very likely

Only during poor weather conditions

Not likely

28 / 30

What happens when a wheel locks and a tire skids?

All of the above

The tire goes flat

A vehicle makes an abrupt stop

A vehicle loses steering control and directional stability

29 / 30

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

Return springs

Rotors

Brake pads

Calipers

30 / 30

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

Quadrupled

Doubled

Tripled

The same

Your score is

Ontario Air Brake Test 05

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