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

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

Oil

Nothing

Dirt

Water

2 / 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 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

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

It can freeze in cold temperatures and may cause brake failure

3 / 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?

The engine stalls

It breaks the compressor

It turns off the compressor

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

4 / 30

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

A stop valve

None of the above

A one-way check valve

A foot valve

5 / 30

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

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

That the brakes are over-heating

6 / 30

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

Additional moisture

Rust

Sludge

All of the above

7 / 30

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

It doesn't matter

The supply tank

The secondary tank

The primary tank

8 / 30

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

Useful tanks

Dry tanks

Wet tanks

Double tanks

9 / 30

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

120 psi

145 psi

150 psi

135 psi

10 / 30

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

Main tank

Supply tank

Primary tank

First tank

11 / 30

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

Metal fragments

Nothing

Dirt

Moisture

12 / 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

A lubricant

High-pressure air

All of the above

13 / 30

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

A warning buzzer happens

It will cause the compressor to start pumping air again

It will cause a warning light to flash

It will cause the governor to turn off

14 / 30

How many separate air pressure gauges can vehicles have?

Four

Two

Unlimited

Three

15 / 30

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

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

The second governor kicks in

16 / 30

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

Pushrods

None of the above

Brackets

Belts and pulleys

17 / 30

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

Every 48 hours

Daily

Weekly

Every 72 hours

18 / 30

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

Normal

It doesn't matter

Low

High

19 / 30

What is the purpose of the governor?

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

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

To monitor how the air is pushed through the lines

All of the above

20 / 30

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

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

None of the above

It slowly brakes

21 / 30

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

Two

Four

Three

One

22 / 30

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

Four

Two

One

Three

23 / 30

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

It builds up

It sits in the air lines

It cools and passes through a drying material

It goes trough the one-way valve

24 / 30

What happens to the moisture collected in the air dryer?

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

It evaporates

It gets pushed back into the supply tank

Nothing

25 / 30

Where are the air tanks located?

Within the engine compartment

In the cab

Under or around the frame of the vehicle

Behind the compressor

26 / 30

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

Dual-service tanks

Double tanks

Duty tanks

Working tanks

27 / 30

What is another name for the supply tank?

Main tank

Wet tank

Primary tank

Dry tank

28 / 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

29 / 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

30 / 30

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

An air dryer

Smaller valves

All of the above

A filter

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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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