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

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

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

None of the above

The spring brakes will apply

It causes brake failure

2 / 30

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

Yes

Depends on the manufacturer

Depending on the age of the vehicle

3 / 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

None of the above

A pushrod

A bushing

4 / 30

What do front wheel-limiting valves do?

Stop air flow to the front brakes

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

Stabilize the pressure so it is equal in all wheels

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

5 / 30

Safety valves normally open at what psi?

120 psi

150 psi

175 psi

180 psi

6 / 30

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

Certified technicians

Vehicle owners

Drivers

All of the above

7 / 30

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

The style of brake chamber

That size of brake chamber

The type of brake chamber

The material the brake chamber is made of

8 / 30

What is referred to as stroke length?

The thickness of the pushrod

The size of the pushrod

The distance that the pushrod travels out of the chamber

The distance that the pushrod travels into the chamber

9 / 30

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

Not the older vehicles

Yes

Only fire trucks

Only tractor trailers

10 / 30

Air pressure gauges indicate air pressure in which air tanks?

The wet tank

Dual tanks

All of the tanks

Service tank

11 / 30

What is the pushrod stroke dependent on?

The size of the discs

The size of the pads

The amount of compressed air going through the air hoses

The pressure of the compressed air that enters the brake chamber

12 / 30

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

A stopper

A puck

A diaphragm

A diagram

13 / 30

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

The spring inside the chamber

A pulley

Natural force

Forced air

14 / 30

How are spring brakes applied?

They apply when the driver pulls a lever

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

15 / 30

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

All of the above

The size of the compressor

The vehicle manufacturer

The size of the wet tank

16 / 30

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

A dual chamber

A double chamber

A spring brake chamber

A service brake chamber

17 / 30

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

Wig wag

Wig mag

Big wag

Mig mag

18 / 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

19 / 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...

Exhaust ports of brake valves

Air-dryer exhaust port

Compressor drain ports

On or near the vehicle's axles

20 / 30

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

An alarm

A bell

A warning buzzer

A recorded voice

21 / 30

How many kinds of air brake chambers are there?

Four

Three

One

Two

22 / 30

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

Oil

Moisture

Dirt

Metal fragments

23 / 30

What is referred to as pushrod stroke length?

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

The size of the pushrod

24 / 30

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

Maximum thrust

Maintenance schedule

Pushrod stroke-adjustment limit

Minimum thrust

25 / 30

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

Clamps the discs to the rotors

Pushes the brake shoes onto the drums

None of the above

Provides enough force to hold the brakes in the applied position

26 / 30

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

65 psi

55 psi

35 psi

45 psi

27 / 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

28 / 30

The pushrod stroke is dependent on what?

The manufacturer's design

None of the above

The pressure of the compressed air that enters the brake chamber

How hard the brakes are applied

29 / 30

What contains the brake drum or disc?

The hubs

The slack adjusters

The brake assembly

The shoes

30 / 30

What links the brake chamber to the brake assembly?

Clamps

Hinges

The pushrod and a slack adjuster

The pushrod and brackets

Your score is

Ontario Air Brake Test 03

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