Manitoba Air Brake Test 03

The free Manitoba Air Brake practice test is a smart way to prepare for your official exam and increase your chances of passing with flying colors. The practice test is designed to familiarize you with the type of questions you can expect on the test, identify areas where you need improvement, and build your confidence as you move towards your goal.

1 / 30

Pushrod stroke is produced by what?

The governor

Manually adjusting the slack adjuster

Compressed air entering the brake chamber

Pressure applied to the foot valve

2 / 30

Air brake chambers are round metal containers, which are located where?

At the rear wheels

Beside the primary tank

At the steering wheels

At each wheel

3 / 30

Which of the following does a service brake chamber not contain?

A metal rod called a pushrod

A flexible rubber disc called a diaphragm

A return spring

A clevis

4 / 30

What happens when stroke exceeds the adjustment limits of a brake chamber?

The drop in brake force can be significant

The drums crack

Brake force increases

Nothing of consequence happens

5 / 30

How do you supply air to a spring brake control valve with most vehicles?

Pushed

Moved right

Pulled

Moved left

6 / 30

Are you allowed to let the pushrod stroke exceed the adjustment limit?

Yes

Only with older vehicles

Only in emergency situations

7 / 30

The motion of the slack adjuster transfers to the brake assembly, causing what?

The brake shoes or pads to make contact with the brake drum or disc

A release of the air pressure

A release of the brakes

Brake failure or fade

8 / 30

How can a technician manually compress or 'cage' the spring in a spring brake chamber?

Using a caging bolt

Using a spring bolt

None of the above

Using a compressing bolt

9 / 30

Before driving the vehicle, what is considered to be enough air pressure to keep the spring brakes from applying?

Between 70 and 80 psi

Between 100 and 110 psi

Between 50 and 60 psi

Between 55 and 65 psi

10 / 30

Are spring brakes air applied like service brakes?

Yes

Only on fire trucks

Only on older vehicles

11 / 30

What is another word for compressing the spring?

Cramp

Sage

Doyle

Cage

12 / 30

Why can vehicles still be driven even with the spring brakes applied?

None of the above

They are not located on all of the wheels

They do not have the braking power of the full-service brake application

They release automatically

13 / 30

What do the pushrod and slack adjuster do?

They link the brake chamber to the brake assembly

They increase the braking force sent to the brakes

They reduce the pressure to the brakes

They control the pressure going to the brake chamber

14 / 30

What should drivers do if they encounter a disabled spring brake chamber?

Avoid driving on highways

Have the vehicle inspected and repaired immediately

Drive with hazard lights on

Travel to short destinations, no further than 160 km

15 / 30

Which statement is false? Vehicles with air brakes must have separate brake systems for...

Emergency braking

Going downgrade

Parking

Normal braking

16 / 30

Almost all commercial vehicles use a type of brake chamber that is held together by what?

S-shafts

Bolts

A clamp assembly

Diaphragms

17 / 30

How do spring brake chambers apply the brakes?

By means of air pressure that provides enough force to hold the brakes in the applied position

By means of a large coil spring that provides enough force to hold the brakes in the applied position

By means of hydraulic fluid that provides enough force to hold the brakes in the applied position

None of the above

18 / 30

What is referred to as stroke length?

The distance that the pushrod travels into the chamber

The distance that the return spring moves out of the chamber

The distance that the return spring moves into the chamber

The distance that the pushrod travels out of the chamber

19 / 30

What are the two kinds of air brake chambers called?

Air and hydraulic

Normal and emergency

Primary and secondary

Service and spring

20 / 30

To release the spring brakes, enough air pressure must be supplied to the spring brake chamber to compress the spring. At what psi?

Between 70-80 psi

21 / 30

What is the level called that helps link the brake chamber to the brake assembly?

Clevis pin

Pushrod

None of the above

Slack adjuster

22 / 30

What do front wheel-limiting valves do?

None of the above

They reduce the force of the service brakes on the front steering axle

They control the air flow from the governor

They maximize the braking pressure required on the front steering axle

23 / 30

What happens when you press the brake pedal and compressed air fills the service brake chamber?

It causes the diaphragm to move and push out the pushrod to apply the brakes

It fills up the reservoirs with compressed air

None of the above

It fills up the lines and hoses with compressed air

24 / 30

What happens when a spring brake chamber has been disabled?

The parking brake will apply, but not the emergency brake

The parking and emergency brake will not apply

The emergency brake will apply, but not the parking brake

All brakes will not apply

25 / 30

When air pressure is released, what happens to the pushrod?

It remains in the locked position

It moves forward

Nothing

It is returned to its original position

26 / 30

Compressed air is converted into what?

More air

Mechanical force to apply the brakes and stop the vehicle

Weight

Power

27 / 30

Disabled or caged spring brake chambers can be recognized how?

By the missing caging bolt

You can't

By the retractable caging bolt

By the protrusion of the caging bolt or other similar mechanism

28 / 30

Who can perform re-adjustments on automatic slack adjusters?

The driver

The carrier

Only certified technicians

Anyone in the yard

29 / 30

Which statement is false? Where are the places where the compressed air exhausts?

Exhaust ports of brake valves

Air-dryer exhaust port

On or near the vehicle's axles

Next to the governor

30 / 30

When are spring brakes designed to work?

At highways speeds

When going downhill

When you are parking your vehicle or in an emergency when your service brakes fail

Only on icy road conditions

Your score is

Manitoba Air Brake Test 03

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