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

How many separate air pressure gauges can vehicles have?

Three

Unlimited

Four

Two

2 / 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

3 / 30

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

Metal fragments

Moisture

Dirt

Nothing

4 / 30

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

It doesn't matter

The primary tank

The secondary tank

The supply tank

5 / 30

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

It will open to allow the excess air pressure to escape

It stops air from escaping back to the supply tank

None of the above

It forces air to remain in the supply tank

6 / 30

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

None of the above

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

7 / 30

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

Rust

Additional moisture

Sludge

All of the above

8 / 30

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

Normal

It doesn't matter

Low

High

9 / 30

What is another name for the supply tank?

Wet tank

Primary tank

Main tank

Dry tank

10 / 30

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

A warning buzzer happens

It will cause the governor to turn off

It will cause a warning light to flash

It will cause the compressor to start pumping air again

11 / 30

What happens to the moisture collected in the air dryer?

It evaporates

It gets pushed back into the supply tank

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

Nothing

12 / 30

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

All of the above

High-pressure air

An alcohol vapor

A lubricant

13 / 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

All of the above

To monitor how the air is pushed through the lines

14 / 30

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

All of the above

A filter

Smaller valves

An air dryer

15 / 30

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

Double tanks

Dual-service tanks

Working tanks

Duty tanks

16 / 30

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

Two

Four

One

Three

17 / 30

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

Four

Two

One

Three

18 / 30

Where is an air dryer located?

In front of the compressor

Between the air compressor and the supply tank

Inside the compressor

Next to the governor

19 / 30

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

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

None of the above

20 / 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 cools and passes through a drying material

It builds up

21 / 30

Where are the air tanks located?

Under or around the frame of the vehicle

Behind the compressor

In the cab

Within the engine compartment

22 / 30

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

Belts and pulleys

None of the above

Pushrods

Brackets

23 / 30

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

145 psi

150 psi

120 psi

135 psi

24 / 30

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

Primary tank

Supply tank

Main tank

First tank

25 / 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

26 / 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

27 / 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

28 / 30

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

Every 48 hours

Daily

Every 72 hours

Weekly

29 / 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 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 cause the vehicle to come to an abrupt stop

30 / 30

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

Wet tanks

Dry tanks

Useful tanks

Double tanks

Your score is

Ontario Air Brake Test 02

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