Ontario Air Brake Test 03

If you plan to take the Ontario air brake test, it is highly recommended that you take the practice test beforehand.

1 / 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

2 / 30

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

Vehicle owners

All of the above

Drivers

Certified technicians

3 / 30

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

Minimum thrust

Maximum thrust

Maintenance schedule

Pushrod stroke-adjustment limit

4 / 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

5 / 30

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

45 psi

65 psi

35 psi

55 psi

6 / 30

What links the brake chamber to the brake assembly?

The pushrod and brackets

Hinges

Clamps

The pushrod and a slack adjuster

7 / 30

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

The size of the wet tank

The vehicle manufacturer

The size of the compressor

All of the above

8 / 30

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

The type of brake chamber

That size of brake chamber

The material the brake chamber is made of

The style of brake chamber

9 / 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

10 / 30

Safety valves normally open at what psi?

150 psi

175 psi

180 psi

120 psi

11 / 30

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

Only when directed by a qualified technician

Yes

Yes, but only within city limits

12 / 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

Remotely

In unison

Simultaneously

13 / 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

Exhaust ports of brake valves

Air-dryer exhaust port

On or near the vehicle's axles

14 / 30

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

Depending on the age of the vehicle

Yes

Depends on the manufacturer

15 / 30

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

A dual chamber

A service brake chamber

A spring brake chamber

A double chamber

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 bell

An alarm

A recorded voice

A warning buzzer

17 / 30

What contains the brake drum or disc?

The brake assembly

The slack adjusters

The shoes

The hubs

18 / 30

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

Wig wag

Mig mag

Big wag

Wig mag

19 / 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

20 / 30

The pushrod stroke is dependent on what?

None of the above

The manufacturer's design

How hard the brakes are applied

The pressure of the compressed air that enters the brake chamber

21 / 30

How many kinds of air brake chambers are there?

One

Three

Two

Four

22 / 30

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

A stopper

A puck

A diaphragm

A diagram

23 / 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

24 / 30

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

Forced air

Natural force

A pulley

The spring inside the chamber

25 / 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

Pushes the brake shoes onto the drums

Clamps the discs to the rotors

None of the above

26 / 30

Air pressure gauges indicate air pressure in which air tanks?

All of the tanks

Service tank

The wet tank

Dual tanks

27 / 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 pushrod

A valve

None of the above

28 / 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 length of the chamber the pushrod travels through

The distance that the pushrod travels out of the chamber

29 / 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

30 / 30

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

Dirt

Moisture

Metal fragments

Oil

Your score is

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The practice exam will help you become accustomed to the format of the actual test and provide insight into the types of questions that may be presented. It is crucial to understand that the air brake exam is tailored for operators of vehicles that have air brakes; therefore, if you do not belong to this group, you might need to take a different type of examination. The practice exam is available online and can be taken multiple times, allowing you to identify areas where you can improve. Achieving a score of at least 80% on the practice exam is essential before you attempt the real test. In conclusion, completing the Ontario air brake practice test is a crucial step toward obtaining your air brake endorsement and promoting safe driving habits.

Ontario Air Brake Test 03

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