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

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

All of the above

The vehicle manufacturer

The size of the compressor

The size of the wet tank

2 / 30

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

All of the above

Drivers

Certified technicians

Vehicle owners

3 / 30

How are spring brakes applied?

They apply when the driver pushes down on a lever

None of the above

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

They apply when the driver pulls a lever

4 / 30

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

None of the above

The spring brakes will apply

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

It causes brake failure

5 / 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 valve

A pushrod

None of the above

A bushing

6 / 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...

Compressor drain ports

Air-dryer exhaust port

On or near the vehicle's axles

Exhaust ports of brake valves

7 / 30

What is the pushrod stroke dependent on?

The pressure of the compressed air that enters the brake chamber

The size of the discs

The amount of compressed air going through the air hoses

The size of the pads

8 / 30

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

Simultaneously

In unison

Remotely

Separately

9 / 30

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

Yes

Depending on the age of the vehicle

Depends on the manufacturer

10 / 30

What is referred to as pushrod stroke length?

The size of the pushrod

How long it takes for the slack adjuster to adjust

The distance that the pushrod travels out of the chamber

The length of the chamber the pushrod travels through

11 / 30

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

Wig wag

Mig mag

Wig mag

Big wag

12 / 30

What do front wheel-limiting valves do?

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

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

Stop air flow to the front brakes

Stabilize the pressure so it is equal in all wheels

13 / 30

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

Maximum thrust

Pushrod stroke-adjustment limit

Maintenance schedule

Minimum thrust

14 / 30

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

The material the brake chamber is made of

That size of brake chamber

The type of brake chamber

The style of brake chamber

15 / 30

How many kinds of air brake chambers are there?

One

Three

Four

Two

16 / 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 recorded voice

A bell

An alarm

17 / 30

What contains the brake drum or disc?

The brake assembly

The slack adjusters

The hubs

The shoes

18 / 30

Safety valves normally open at what psi?

120 psi

150 psi

180 psi

175 psi

19 / 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

20 / 30

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

The spring inside the chamber

A pulley

Forced air

Natural force

21 / 30

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

Only tractor trailers

Yes

Not the older vehicles

Only fire trucks

22 / 30

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

65 psi

45 psi

35 psi

55 psi

23 / 30

What is referred to as stroke length?

The size of the pushrod

The distance that the pushrod travels into the chamber

The distance that the pushrod travels out of the chamber

The thickness of the pushrod

24 / 30

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

Metal fragments

Oil

Dirt

Moisture

25 / 30

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

None of the above

Provides enough force to hold the brakes in the applied position

Pushes the brake shoes onto the drums

Clamps the discs to the rotors

26 / 30

The pushrod stroke is dependent on what?

How hard the brakes are applied

The pressure of the compressed air that enters the brake chamber

None of the above

The manufacturer's design

27 / 30

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

Yes

Only when directed by a qualified technician

Yes, but only within city limits

28 / 30

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

A stopper

A diagram

A diaphragm

A puck

29 / 30

Air pressure gauges indicate air pressure in which air tanks?

All of the tanks

Service tank

The wet tank

Dual tanks

30 / 30

What links the brake chamber to the brake assembly?

Hinges

The pushrod and a slack adjuster

The pushrod and brackets

Clamps

Your score is

Ontario Air Brake Test 03

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