Ontario Air Brake Test 02

Taking the Ontario air brake practice test is an excellent way to prepare for the actual air brake endorsement test, which is conducted in the presence of an authorized officer.

1 / 30

The primary and secondary air tanks are called dual-service tanks, but what else are they called?

Double tanks

Useful tanks

Dry tanks

Wet tanks

2 / 30

Having two delivery circuits is a safety feature that does what?

It slowly brakes

None of the above

Ensures if one circuit fails, the other circuit will provide enough brake function to stop the vehicle

It warns the driver of impending brake failure

3 / 30

What is the purpose of the governor?

To monitor how the air is pushed through the lines

To hold back the air pressure before the brakes get too hot

To prevent the compressor from producing too much compressed air and to reduce the load on the engine

All of the above

4 / 30

Which of the following are not some of the problems that can occur if the sludge passes through to the rest of the brake system?

It can freeze in cold temperatures and may cause brake failure

It can become corrosive and damage the Air-tank and other system components

It can cause the vehicle to come to an abrupt stop

It can form a sludge that can pass from the tank into other components of the air brake system, damaging seals and causing brake valves to stick

5 / 30

What happens after air that is pumped by the air compressor passes through the air dryer?

It sits in the air lines

It builds up

It cools and passes through a drying material

It goes trough the one-way valve

6 / 30

What is the first tank that the compressed air enters called?

Main tank

Primary tank

First tank

Supply tank

7 / 30

Vehicles may use what to reduce the amount of moisture that passes into the air brake system?

All of the above

An air dryer

Smaller valves

A filter

8 / 30

What happens to the moisture collected in the air dryer?

It evaporates

It's expelled with high-pressure air when the compressor reaches cut-out pressure

It gets pushed back into the supply tank

Nothing

9 / 30

Air compressors are generally powered directly by the vehicle's engine or by using what?

None of the above

Pushrods

Belts and pulleys

Brackets

10 / 30

How many separate air pressure gauges can vehicles have?

Four

Unlimited

Two

Three

11 / 30

When draining the tanks, which tank should always be first?

It doesn't matter

The primary tank

The supply tank

The secondary tank

12 / 30

A drop in air pressure below the normal cut-in setting is a sign of what?

That the brakes are over-heating

That the brake system is working as it should

None of the above

That the air brake system is malfunctioning or that an abnormal demand is being placed on the system

13 / 30

A vehicle should only be driven when air pressure is in which range?

High

It doesn't matter

Normal

Low

14 / 30

What does the air that is drawn in by the air compressor contain?

Moisture

Nothing

Dirt

Metal fragments

15 / 30

If the governor fails to signal the compressor to cut-out and too much pressure builds up, what happens?

The second governor kicks in

The system shuts down

The driver receives a warning signal on the dashboard

The safety valves will open to allow the excess air pressure to escape

16 / 30

In some cases, how many tanks are housed within one cylinder?

Three

Two

Four

One

17 / 30

The actual air brake system pressure range must never be higher than...

120 psi

145 psi

135 psi

150 psi

18 / 30

The primary and secondary air tanks are also called...

Double tanks

Duty tanks

Dual-service tanks

Working tanks

19 / 30

Where is an air dryer located?

In front of the compressor

Between the air compressor and the supply tank

Next to the governor

Inside the compressor

20 / 30

How often should moisture and oil must be drained from the tanks?

Every 48 hours

Weekly

Daily

Every 72 hours

21 / 30

What can the collected moisture and oil mixture from the supply tank form?

All of the above

Additional moisture

Sludge

Rust

22 / 30

What may also mix with the air that passes through the compressor and settle at the bottom of the tank?

Nothing

Dirt

Water

Oil

23 / 30

What happens if the mixture of moisture and oil that collects in the supply tank passes into the rest of the air brake system?

It breaks the compressor

It can damage brake components and interfere with the operation of the system

The engine stalls

It turns off the compressor

24 / 30

When air leaves the supply tank, it splits into how many circuits?

Three

Two

Four

One

25 / 30

What is another name for the supply tank?

Dry tank

Primary tank

Main tank

Wet tank

26 / 30

What is added to the air that will mix with any moisture or ice present and reduce its tendency to freeze?

An alcohol vapor

All of the above

A lubricant

High-pressure air

27 / 30

What's the purpose of the safety valve in the supply tank?

It forces air to remain in the supply tank

It will open to allow the excess air pressure to escape

None of the above

It stops air from escaping back to the supply tank

28 / 30

What prevents the air flow from returning to the supply tank?

A stop valve

A foot valve

A one-way check valve

None of the above

29 / 30

Where are the air tanks located?

Within the engine compartment

In the cab

Behind the compressor

Under or around the frame of the vehicle

30 / 30

When the air pressure drops to a certain point, what will the governor do?

It will cause the governor to turn off

It will cause a warning light to flash

A warning buzzer happens

It will cause the compressor to start pumping air again

Your score is

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The practice test is designed to assess the understanding and knowledge of potential drivers on essential aspects of air brake systems, including operation, maintenance, and safety procedures. It comprises of 25 multiple-choice questions, with a required pass rate of 80% or higher to secure the endorsement. The province’s Ministry of Transportation recommends that drivers take the practice test several times before attempting the actual one to become comfortable with the material. Overall, taking the Ontario air brake practice test is an essential step towards becoming a successful and safe driver with the proper credentials.

Ontario Air Brake Test 02

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