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

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

None of the above

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

That the brakes are over-heating

That the brake system is working as it should

2 / 30

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

A lubricant

An alcohol vapor

High-pressure air

All of the above

3 / 30

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

Three

Two

Four

One

4 / 30

What happens to the moisture collected in the air dryer?

Nothing

It evaporates

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

It gets pushed back into the supply tank

5 / 30

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

High

It doesn't matter

Normal

Low

6 / 30

Where are the air tanks located?

Within the engine compartment

Behind the compressor

In the cab

Under or around the frame of the vehicle

7 / 30

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

Four

One

Two

Three

8 / 30

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

Daily

Weekly

Every 72 hours

Every 48 hours

9 / 30

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

The driver receives a warning signal on the dashboard

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

The system shuts down

The second governor kicks in

10 / 30

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

An air dryer

Smaller valves

A filter

All of the above

11 / 30

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

It stops air from escaping back to the supply tank

None of the above

It forces air to remain in the supply tank

It will open to allow the excess air pressure to escape

12 / 30

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

Sludge

All of the above

Rust

Additional moisture

13 / 30

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

None of the above

Pushrods

Brackets

Belts and pulleys

14 / 30

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

Double tanks

Useful tanks

Wet tanks

Dry tanks

15 / 30

What is another name for the supply tank?

Dry tank

Main tank

Wet tank

Primary tank

16 / 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 the compressor to start pumping air again

It will cause a warning light to flash

A warning buzzer happens

17 / 30

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

It cools and passes through a drying material

It builds up

It goes trough the one-way valve

It sits in the air lines

18 / 30

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

Supply tank

First tank

Primary tank

Main tank

19 / 30

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

150 psi

145 psi

120 psi

135 psi

20 / 30

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

The secondary tank

The supply tank

The primary tank

It doesn't matter

21 / 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 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

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

It can cause the vehicle to come to an abrupt stop

22 / 30

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

A foot valve

A one-way check valve

A stop valve

None of the above

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 turns off the compressor

It breaks the compressor

The engine stalls

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

24 / 30

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

Moisture

Dirt

Metal fragments

Nothing

25 / 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

26 / 30

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

None of the above

It warns the driver of impending brake failure

It slowly brakes

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

27 / 30

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

Working tanks

Dual-service tanks

Duty tanks

Double tanks

28 / 30

How many separate air pressure gauges can vehicles have?

Four

Two

Unlimited

Three

29 / 30

Where is an air dryer located?

Inside the compressor

Between the air compressor and the supply tank

Next to the governor

In front of the compressor

30 / 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

All of the above

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

Your score is

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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