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

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

A return spring

A flexible rubber disc called a diaphragm

A clevis

A metal rod called a pushrod

2 / 30

What are the two kinds of air brake chambers called?

Normal and emergency

Primary and secondary

Air and hydraulic

Service and spring

3 / 30

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

Air-dryer exhaust port

Next to the governor

Exhaust ports of brake valves

On or near the vehicle's axles

4 / 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

5 / 30

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

Drive with hazard lights on

Travel to short destinations, no further than 160 km

Avoid driving on highways

Have the vehicle inspected and repaired immediately

6 / 30

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

Beside the primary tank

At the steering wheels

At each wheel

At the rear wheels

7 / 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

8 / 30

Are spring brakes air applied like service brakes?

Only on older vehicles

Only on fire trucks

Yes

9 / 30

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

A release of the brakes

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

Brake failure or fade

A release of the air pressure

10 / 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 50 and 60 psi

Between 70 and 80 psi

Between 55 and 65 psi

11 / 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

12 / 30

Pushrod stroke is produced by what?

Pressure applied to the foot valve

The governor

Manually adjusting the slack adjuster

Compressed air entering the brake chamber

13 / 30

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

It fills up the reservoirs with compressed air

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

It fills up the lines and hoses with compressed air

None of the above

14 / 30

What happens when a spring brake chamber has been disabled?

The parking brake will apply, but not the emergency brake

The emergency brake will apply, but not the parking brake

All brakes will not apply

The parking and emergency brake will not apply

15 / 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 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

16 / 30

Who can perform re-adjustments on automatic slack adjusters?

The carrier

Only certified technicians

The driver

Anyone in the yard

17 / 30

What is another word for compressing the spring?

Sage

Cramp

Doyle

Cage

18 / 30

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

None of the above

Using a spring bolt

Using a caging bolt

Using a compressing bolt

19 / 30

Disabled or caged spring brake chambers can be recognized how?

By the missing caging bolt

You can't

By the protrusion of the caging bolt or other similar mechanism

By the retractable caging bolt

20 / 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

21 / 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 pushrod travels into the chamber

The distance that the return spring moves into the chamber

22 / 30

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

They are not located on all of the wheels

They release automatically

None of the above

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

23 / 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

24 / 30

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

Pushed

Moved right

Pulled

Moved left

25 / 30

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

The drums crack

Brake force increases

Nothing of consequence happens

The drop in brake force can be significant

26 / 30

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

A clamp assembly

S-shafts

Diaphragms

Bolts

27 / 30

Compressed air is converted into what?

Weight

More air

Power

Mechanical force to apply the brakes and stop the vehicle

28 / 30

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

It is returned to its original position

Nothing

It remains in the locked position

It moves forward

29 / 30

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

Yes

Only with older vehicles

Only in emergency situations

30 / 30

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

Emergency braking

Parking

Normal braking

Going downgrade

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Manitoba Air Brake Test 03

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