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

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

Moved right

Pulled

Pushed

Moved left

2 / 30

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

Exhaust ports of brake valves

Next to the governor

On or near the vehicle's axles

Air-dryer exhaust port

3 / 30

Are spring brakes air applied like service brakes?

Yes

Only on fire trucks

Only on older vehicles

4 / 30

What is referred to as stroke length?

The distance that the return spring moves out of the chamber

The distance that the pushrod travels into the chamber

The distance that the pushrod travels out of the chamber

The distance that the return spring moves into the chamber

5 / 30

What are the two kinds of air brake chambers called?

Primary and secondary

Service and spring

Air and hydraulic

Normal and emergency

6 / 30

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

A return spring

A clevis

A flexible rubber disc called a diaphragm

A metal rod called a pushrod

7 / 30

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

At each wheel

Beside the primary tank

At the steering wheels

At the rear wheels

8 / 30

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

Brake failure or fade

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

A release of the brakes

A release of the air pressure

9 / 30

Disabled or caged spring brake chambers can be recognized how?

By the retractable caging bolt

By the protrusion of the caging bolt or other similar mechanism

You can't

By the missing caging bolt

10 / 30

How do spring brake chambers apply the brakes?

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

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

11 / 30

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

Using a spring bolt

None of the above

Using a compressing bolt

Using a caging bolt

12 / 30

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

Avoid driving on highways

Travel to short destinations, no further than 160 km

Have the vehicle inspected and repaired immediately

Drive with hazard lights on

13 / 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

14 / 30

When are spring brakes designed to work?

When going downhill

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

Only on icy road conditions

At highways speeds

15 / 30

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

Diaphragms

S-shafts

A clamp assembly

Bolts

16 / 30

What do front wheel-limiting valves do?

None of the above

They control the air flow from the governor

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

They maximize the braking pressure required on the front steering axle

17 / 30

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

Yes

Only with older vehicles

Only in emergency situations

18 / 30

What do the pushrod and slack adjuster do?

They control the pressure going to the brake chamber

They reduce the pressure to the brakes

They increase the braking force sent to the brakes

They link the brake chamber to the brake assembly

19 / 30

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

The drums crack

The drop in brake force can be significant

Brake force increases

Nothing of consequence happens

20 / 30

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

None of the above

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

They are not located on all of the wheels

They release automatically

21 / 30

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

Emergency braking

Going downgrade

Parking

Normal braking

22 / 30

Compressed air is converted into what?

Weight

Mechanical force to apply the brakes and stop the vehicle

Power

More air

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

None of the above

It fills up the reservoirs with compressed air

It fills up the lines and hoses with compressed air

24 / 30

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

It remains in the locked position

It is returned to its original position

It moves forward

Nothing

25 / 30

Who can perform re-adjustments on automatic slack adjusters?

Anyone in the yard

The carrier

Only certified technicians

The driver

26 / 30

What is another word for compressing the spring?

Doyle

Cramp

Cage

Sage

27 / 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

28 / 30

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

Between 55 and 65 psi

Between 70 and 80 psi

Between 100 and 110 psi

Between 50 and 60 psi

29 / 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

30 / 30

Pushrod stroke is produced by what?

Compressed air entering the brake chamber

Pressure applied to the foot valve

The governor

Manually adjusting the slack adjuster

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Manitoba Air Brake Test 03

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