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

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

A clamp assembly

Diaphragms

S-shafts

Bolts

2 / 30

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

Pushrod

None of the above

Clevis pin

Slack adjuster

3 / 30

What is another word for compressing the spring?

Cramp

Sage

Cage

Doyle

4 / 30

Compressed air is converted into what?

Mechanical force to apply the brakes and stop the vehicle

Weight

More air

Power

5 / 30

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

At each wheel

At the steering wheels

At the rear wheels

Beside the primary tank

6 / 30

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

Emergency braking

Going downgrade

Parking

Normal braking

7 / 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 55 and 65 psi

Between 50 and 60 psi

Between 70 and 80 psi

8 / 30

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

None of the above

Using a compressing bolt

Using a spring bolt

Using a caging bolt

9 / 30

What do front wheel-limiting valves do?

They control the air flow from the governor

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

None of the above

They maximize the braking pressure required on the front steering axle

10 / 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

11 / 30

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

Next to the governor

Exhaust ports of brake valves

Air-dryer exhaust port

On or near the vehicle's axles

12 / 30

Pushrod stroke is produced by what?

Compressed air entering the brake chamber

The governor

Manually adjusting the slack adjuster

Pressure applied to the foot valve

13 / 30

When are spring brakes designed to work?

At highways speeds

When going downhill

Only on icy road conditions

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

14 / 30

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

Moved right

Pulled

Pushed

Moved left

15 / 30

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

Nothing of consequence happens

Brake force increases

The drums crack

The drop in brake force can be significant

16 / 30

What happens when a spring brake chamber has been disabled?

The parking and emergency brake will not apply

The parking brake will apply, but not the emergency brake

All brakes will not apply

The emergency brake will apply, but not the parking brake

17 / 30

Disabled or caged spring brake chambers can be recognized how?

By the missing caging bolt

By the retractable caging bolt

By the protrusion of the caging bolt or other similar mechanism

You can't

18 / 30

What do the pushrod and slack adjuster do?

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

They link the brake chamber to the brake assembly

19 / 30

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

None of the above

It fills up the lines and hoses with compressed air

It fills up the reservoirs with compressed air

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

20 / 30

What are the two kinds of air brake chambers called?

Primary and secondary

Service and spring

Air and hydraulic

Normal and emergency

21 / 30

Are spring brakes air applied like service brakes?

Yes

Only on older vehicles

Only on fire trucks

22 / 30

Who can perform re-adjustments on automatic slack adjusters?

The driver

Anyone in the yard

Only certified technicians

The carrier

23 / 30

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

It moves forward

It is returned to its original position

Nothing

It remains in the locked position

24 / 30

What is referred to as stroke length?

The distance that the return spring moves into the chamber

The distance that the pushrod travels into the chamber

The distance that the return spring moves out of the chamber

The distance that the pushrod travels out of the chamber

25 / 30

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

Only with older vehicles

Yes

Only in emergency situations

26 / 30

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

A clevis

A return spring

A flexible rubber disc called a diaphragm

A metal rod called a pushrod

27 / 30

How do spring brake chambers apply the brakes?

None of the above

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

28 / 30

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

Brake failure or fade

A release of the air pressure

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

A release of the brakes

29 / 30

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

They release automatically

They are not located on all of the wheels

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

None of the above

30 / 30

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

Have the vehicle inspected and repaired immediately

Avoid driving on highways

Drive with hazard lights on

Travel to short destinations, no further than 160 km

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Manitoba Air Brake Test 03

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