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. The practice test is designed to test the understanding and knowledge of potential drivers on important aspects of air brake systems, such as the 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.

1 / 30

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

All of the above

Smaller valves

A filter

An air dryer

2 / 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 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

3 / 30

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

120 psi

150 psi

145 psi

135 psi

4 / 30

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

One

Two

Four

Three

5 / 30

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

Water

Nothing

Dirt

Oil

6 / 30

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

Belts and pulleys

None of the above

Brackets

Pushrods

7 / 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

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

That the brakes are over-heating

None of the above

8 / 30

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

Dirt

Metal fragments

Nothing

Moisture

9 / 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 sits in the air lines

It goes trough the one-way valve

It builds up

10 / 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

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

The engine stalls

11 / 30

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

Duty tanks

Dual-service tanks

Double tanks

Working tanks

12 / 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

13 / 30

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

Additional moisture

Sludge

Rust

All of the above

14 / 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

15 / 30

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

Two

One

Four

Three

16 / 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

17 / 30

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

It will cause a warning light to flash

It will cause the compressor to start pumping air again

It will cause the governor to turn off

A warning buzzer happens

18 / 30

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

Dry tanks

Wet tanks

Double tanks

Useful tanks

19 / 30

Where is an air dryer located?

Between the air compressor and the supply tank

Next to the governor

In front of the compressor

Inside the compressor

20 / 30

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

It warns the driver of impending brake failure

None of the above

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

It slowly brakes

21 / 30

What is another name for the supply tank?

Primary tank

Dry tank

Wet tank

Main tank

22 / 30

What happens to the moisture collected in the air dryer?

It gets pushed back into the supply tank

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

Nothing

It evaporates

23 / 30

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

Normal

It doesn't matter

High

Low

24 / 30

How many separate air pressure gauges can vehicles have?

Unlimited

Two

Three

Four

25 / 30

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

The secondary tank

The supply tank

It doesn't matter

The primary tank

26 / 30

Where are the air tanks located?

In the cab

Within the engine compartment

Behind the compressor

Under or around the frame of the vehicle

27 / 30

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

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

The second governor kicks in

The system shuts down

The driver receives a warning signal on the dashboard

28 / 30

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

Main tank

Primary tank

First tank

Supply tank

29 / 30

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

Every 72 hours

Daily

Weekly

Every 48 hours

30 / 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 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

It can freeze in cold temperatures and may cause brake failure

Your score is

Ontario Air Brake Test 02

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