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

Who can perform re-adjustments on automatic slack adjusters?

Anyone in the yard

The carrier

The driver

Only certified technicians

2 / 30

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

Between 100 and 110 psi

Between 70 and 80 psi

Between 50 and 60 psi

Between 55 and 65 psi

3 / 30

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

Pushrod

Clevis pin

Slack adjuster

None of the above

4 / 30

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

At the steering wheels

At each wheel

At the rear wheels

Beside the primary tank

5 / 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

6 / 30

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

Only in emergency situations

Only with older vehicles

Yes

7 / 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

8 / 30

Compressed air is converted into what?

More air

Weight

Mechanical force to apply the brakes and stop the vehicle

Power

9 / 30

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

Using a compressing bolt

None of the above

Using a caging bolt

Using a spring bolt

10 / 30

What are the two kinds of air brake chambers called?

Normal and emergency

Air and hydraulic

Service and spring

Primary and secondary

11 / 30

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

S-shafts

A clamp assembly

Bolts

Diaphragms

12 / 30

Pushrod stroke is produced by what?

The governor

Compressed air entering the brake chamber

Manually adjusting the slack adjuster

Pressure applied to the foot valve

13 / 30

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

The drums crack

Brake force increases

The drop in brake force can be significant

Nothing of consequence happens

14 / 30

Disabled or caged spring brake chambers can be recognized how?

By the missing caging bolt

By the retractable caging bolt

You can't

By the protrusion of the caging bolt or other similar mechanism

15 / 30

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

Exhaust ports of brake valves

On or near the vehicle's axles

Air-dryer exhaust port

Next to the governor

16 / 30

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

It is returned to its original position

Nothing

It moves forward

It remains in the locked position

17 / 30

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

Normal braking

Emergency braking

Parking

Going downgrade

18 / 30

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

Have the vehicle inspected and repaired immediately

Avoid driving on highways

Travel to short destinations, no further than 160 km

Drive with hazard lights on

19 / 30

What is referred to as stroke length?

The distance that the pushrod travels out of 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 into the chamber

20 / 30

What do front wheel-limiting valves do?

They control the air flow from the governor

They maximize the braking pressure required on the front steering axle

None of the above

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

21 / 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 control the pressure going to the brake chamber

They reduce the pressure to the brakes

22 / 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

23 / 30

Are spring brakes air applied like service brakes?

Only on fire trucks

Only on older vehicles

Yes

24 / 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

25 / 30

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

Moved right

Pulled

Moved left

Pushed

26 / 30

What happens when a spring brake chamber has been disabled?

All brakes will not apply

The emergency brake will apply, but not the parking brake

The parking brake will apply, but not the emergency brake

The parking and emergency brake will not apply

27 / 30

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

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

They are not located on all of the wheels

None of the above

They release automatically

28 / 30

How do spring brake chambers apply the brakes?

By means of hydraulic fluid 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

None of the above

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

29 / 30

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

A release of the brakes

A release of the air pressure

Brake failure or fade

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

30 / 30

What is another word for compressing the spring?

Cage

Sage

Cramp

Doyle

Your score is

Manitoba Air Brake Test 03

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