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

Safety valves normally open at what psi?

150 psi

180 psi

175 psi

120 psi

2 / 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

3 / 30

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

Big wag

Wig mag

Wig wag

Mig mag

4 / 30

The pushrod stroke is dependent on what?

The manufacturer's design

How hard the brakes are applied

None of the above

The pressure of the compressed air that enters the brake chamber

5 / 30

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

It causes brake failure

The spring brakes will apply

None of the above

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

6 / 30

What links the brake chamber to the brake assembly?

Hinges

The pushrod and a slack adjuster

Clamps

The pushrod and brackets

7 / 30

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

Only fire trucks

Not the older vehicles

Yes

Only tractor trailers

8 / 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...

Air-dryer exhaust port

Exhaust ports of brake valves

On or near the vehicle's axles

Compressor drain ports

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 into the chamber

The distance that the pushrod travels out of the chamber

10 / 30

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

In unison

Simultaneously

Remotely

Separately

11 / 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

None of the above

A valve

A pushrod

12 / 30

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

A double chamber

A dual chamber

A spring brake chamber

A service brake chamber

13 / 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

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 type of brake chamber

The material the brake chamber is made of

The style of brake chamber

That size of brake chamber

15 / 30

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

The spring inside the chamber

Forced air

Natural force

A pulley

16 / 30

What is referred to as pushrod stroke length?

The distance that the pushrod travels out of the chamber

The length of the chamber the pushrod travels through

How long it takes for the slack adjuster to adjust

The size of the pushrod

17 / 30

What contains the brake drum or disc?

The brake assembly

The slack adjusters

The shoes

The hubs

18 / 30

How many kinds of air brake chambers are there?

One

Two

Four

Three

19 / 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

20 / 30

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

Pushrod stroke-adjustment limit

Minimum thrust

Maintenance schedule

Maximum thrust

21 / 30

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

Metal fragments

Moisture

Dirt

Oil

22 / 30

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

Pushes the brake shoes onto the drums

None of the above

Provides enough force to hold the brakes in the applied position

Clamps the discs to the rotors

23 / 30

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

The size of the compressor

All of the above

The vehicle manufacturer

The size of the wet tank

24 / 30

Air pressure gauges indicate air pressure in which air tanks?

All of the tanks

Service tank

Dual tanks

The wet tank

25 / 30

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

35 psi

45 psi

65 psi

55 psi

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

Yes

Only when directed by a qualified technician

27 / 30

How are spring brakes applied?

They apply when the driver pushes down on a lever

None of the above

They apply when the driver pulls a lever

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

28 / 30

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

A recorded voice

A warning buzzer

A bell

An alarm

29 / 30

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

Certified technicians

Drivers

Vehicle owners

All of the above

30 / 30

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

A diaphragm

A diagram

A stopper

A puck

Your score is

By WordPress Quiz plugin

Ontario Air Brake Test 03

About

Practice Tests

Getting a License

Get In Touch