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

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

Nothing

Oil

Water

Dirt

2 / 30

What is the purpose of the governor?

All of the above

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

To monitor how the air is pushed through the lines

3 / 30

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

Double tanks

Dry tanks

Wet tanks

Useful tanks

4 / 30

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

Double tanks

Working tanks

Dual-service tanks

Duty tanks

5 / 30

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

None of the above

It slowly brakes

It warns the driver of impending brake failure

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

6 / 30

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

Every 48 hours

Every 72 hours

Daily

Weekly

7 / 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

8 / 30

Where is an air dryer located?

Between the air compressor and the supply tank

In front of the compressor

Next to the governor

Inside the compressor

9 / 30

Where are the air tanks located?

In the cab

Within the engine compartment

Under or around the frame of the vehicle

Behind the compressor

10 / 30

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

Dirt

Metal fragments

Moisture

Nothing

11 / 30

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

It goes trough the one-way valve

It sits in the air lines

It builds up

It cools and passes through a drying material

12 / 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 driver receives a warning signal on the dashboard

The system shuts down

The second governor kicks in

13 / 30

How many separate air pressure gauges can vehicles have?

Unlimited

Two

Three

Four

14 / 30

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

135 psi

145 psi

120 psi

150 psi

15 / 30

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

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

That the brake system is working as it should

None of the above

That the brakes are over-heating

16 / 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 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

It can freeze in cold temperatures and may cause brake failure

17 / 30

What happens to the moisture collected in the air dryer?

It gets pushed back into the supply tank

Nothing

It evaporates

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

18 / 30

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

Supply tank

Primary tank

First tank

Main tank

19 / 30

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

An air dryer

A filter

Smaller valves

All of the above

20 / 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

21 / 30

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

A foot valve

A stop valve

None of the above

A one-way check valve

22 / 30

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

None of the above

It will open to allow the excess air pressure to escape

It stops air from escaping back to the supply tank

It forces air to remain in the supply tank

23 / 30

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

Two

Three

One

Four

24 / 30

What is another name for the supply tank?

Wet tank

Primary tank

Dry tank

Main tank

25 / 30

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

It will cause the compressor to start pumping air again

A warning buzzer happens

It will cause the governor to turn off

It will cause a warning light to flash

26 / 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

27 / 30

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

The supply tank

It doesn't matter

The primary tank

The secondary tank

28 / 30

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

It doesn't matter

Normal

High

Low

29 / 30

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

All of the above

Sludge

Additional moisture

Rust

30 / 30

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

Two

Four

One

Three

Your score is

Ontario Air Brake Test 02

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