Ontario Air Brake Test 03

If you are planning on taking the Ontario air brake test, it is highly recommended that you take the practice test beforehand. The practice test will help you familiarize yourself with the format of the real test, as well as give you an idea of the types of questions that will be asked. It is important to note that the air brake test is specifically designed for drivers of vehicles equipped with air brakes, so if you do not fall into this category, you may need to take a different type of test. The practice test is online and can be taken multiple times, allowing you to identify areas where you need improvement. It is important to score at least 80% on the practice test before attempting the real test. Overall, taking the Ontario air brake practice test is an important step in obtaining your air brake endorsement and maintaining safe driving practices.

1 / 30

Which statement is false? Compressed air leaving the vehicle travels at a very high speed and will carry...

Dirt

Oil

Metal fragments

Moisture

2 / 30

Safety valves normally open at what psi?

120 psi

150 psi

175 psi

180 psi

3 / 30

Spring brake chambers apply the brakes by means of a large coil spring that does what?

Provides enough force to hold the brakes in the applied position

None of the above

Clamps the discs to the rotors

Pushes the brake shoes onto the drums

4 / 30

Air pressure gauges indicate air pressure in which air tanks?

Service tank

Dual tanks

All of the tanks

The wet tank

5 / 30

Each brake-chamber style, type and size has a specific what?

Maximum thrust

Pushrod stroke-adjustment limit

Maintenance schedule

Minimum thrust

6 / 30

A brake chamber that includes both service brake and spring brake sections is called...

A spring brake chamber

A double chamber

A service brake chamber

A dual chamber

7 / 30

The pushrod stroke is dependent on what?

The manufacturer's design

None of the above

How hard the brakes are applied

The pressure of the compressed air that enters the brake chamber

8 / 30

What links the brake chamber to the brake assembly?

The pushrod and a slack adjuster

Clamps

Hinges

The pushrod and brackets

9 / 30

What do front wheel-limiting valves do?

Reduce the force of the service brakes on the front steering axle

Minimize the air pressure to the rear brakes so the front brakes get more

Stop air flow to the front brakes

Stabilize the pressure so it is equal in all wheels

10 / 30

Which statement is false? To avoid being in the direct path of air exhausting from the air brake system, you should be familiar with all the places where the compressed air exhausts, including...

On or near the vehicle's axles

Air-dryer exhaust port

Exhaust ports of brake valves

Compressor drain ports

11 / 30

How many kinds of air brake chambers are there?

Two

Three

One

Four

12 / 30

What is referred to as pushrod stroke length?

The size of the pushrod

The distance that the pushrod travels out of the chamber

How long it takes for the slack adjuster to adjust

The length of the chamber the pushrod travels through

13 / 30

Some vehicles may have another device that warns of low pressure. What is this called?

Wig mag

Big wag

Wig wag

Mig mag

14 / 30

Vehicles with air brakes must have separate brake systems for normal stopping and for parking and emergency braking and these systems are controlled...

Separately

In unison

Simultaneously

Remotely

15 / 30

Do all manufacturers currently follow an industry colour code for hoses and tubes?

Only tractor trailers

Yes

Only fire trucks

Not the older vehicles

16 / 30

The low-pressure warning device must activate before the pressure in either tank falls to...

55 psi

65 psi

35 psi

45 psi

17 / 30

A service brake chamber contains a flexible rubber disc called...

A diagram

A diaphragm

A stopper

A puck

18 / 30

When you press the brake pedal, compressed air fills the service brake chamber, causing the diaphragm to move and pushes out what to apply the brakes?

A bushing

A valve

A pushrod

None of the above

19 / 30

Due to the design of brake chambers, does each have a limited pushrod stroke-length capacity?

Depends on the manufacturer

Depending on the age of the vehicle

Yes

20 / 30

What contains the brake drum or disc?

The hubs

The shoes

The slack adjusters

The brake assembly

21 / 30

What is referred to as stroke length?

The size of the pushrod

The distance that the pushrod travels into the chamber

The thickness of the pushrod

The distance that the pushrod travels out of the chamber

22 / 30

When air pressure is released, the pushrod is returned to its original position by what?

A pulley

Natural force

Forced air

The spring inside the chamber

23 / 30

The wheels that receive air through the primary or secondary circuits vary, depending on what?

The size of the wet tank

The size of the compressor

The vehicle manufacturer

All of the above

24 / 30

How are spring brakes applied?

They apply when the driver pulls a lever

None of the above

They apply when the driver pushes down on a lever

They apply when air pressure leaves the brake chamber and release when air pressure builds up in the chamber

25 / 30

Which statement is false? Low air-pressure warning devices must give a visual warning such as a light and may also use...

A warning buzzer

A bell

An alarm

A recorded voice

26 / 30

Are you allowed to drive a vehicle when the air pressure is outside the normal operating range?

Yes, but only within city limits

Only when directed by a qualified technician

Yes

27 / 30

What is the pushrod stroke dependent on?

The size of the pads

The size of the discs

The pressure of the compressed air that enters the brake chamber

The amount of compressed air going through the air hoses

28 / 30

Who may perform brake re-adjustments on manual and automatic slack adjusters?

All of the above

Certified technicians

Vehicle owners

Drivers

29 / 30

Which statement is false? The length of pushrod stroke can be measured and compared to the prescribed adjustment limits for the following...

That size of brake chamber

The style of brake chamber

The type of brake chamber

The material the brake chamber is made of

30 / 30

If one circuit fails from the dual-circuit design, what happens?

None of the above

The spring brakes will apply

It causes brake failure

The brakes will still operate on the wheels connected to the other circuit

Your score is

Ontario Air Brake Test 03

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