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

Exhaust ports of brake valves

Next to the governor

Air-dryer exhaust port

On or near the vehicle's axles

2 / 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 air pressure that provides enough force to hold the brakes in the applied position

None of the above

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

3 / 30

What do front wheel-limiting valves do?

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

They control the air flow from the governor

None of the above

They maximize the braking pressure required on the front steering axle

4 / 30

What are the two kinds of air brake chambers called?

Primary and secondary

Service and spring

Normal and emergency

Air and hydraulic

5 / 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 50 and 60 psi

Between 70 and 80 psi

Between 100 and 110 psi

6 / 30

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

A clevis

A flexible rubber disc called a diaphragm

A metal rod called a pushrod

A return spring

7 / 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

8 / 30

When are spring brakes designed to work?

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

When going downhill

Only on icy road conditions

At highways speeds

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

A release of the air pressure

Brake failure or fade

10 / 30

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

Only with older vehicles

Yes

Only in emergency situations

11 / 30

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

Travel to short destinations, no further than 160 km

Have the vehicle inspected and repaired immediately

Avoid driving on highways

Drive with hazard lights on

12 / 30

Are spring brakes air applied like service brakes?

Only on older vehicles

Only on fire trucks

Yes

13 / 30

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

Normal braking

Parking

Going downgrade

Emergency braking

14 / 30

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

At the steering wheels

At the rear wheels

Beside the primary tank

At each wheel

15 / 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

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

What do the pushrod and slack adjuster do?

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

They link the brake chamber to the brake assembly

18 / 30

Compressed air is converted into what?

Mechanical force to apply the brakes and stop the vehicle

More air

Weight

Power

19 / 30

What is another word for compressing the spring?

Cage

Sage

Cramp

Doyle

20 / 30

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

The drums crack

The drop in brake force can be significant

Nothing of consequence happens

Brake force increases

21 / 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 fills up the lines and hoses with compressed air

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

None of the above

22 / 30

What is referred to as stroke length?

The distance that the pushrod travels out of 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 return spring moves into the chamber

23 / 30

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

Moved right

Pulled

Moved left

Pushed

24 / 30

Who can perform re-adjustments on automatic slack adjusters?

Only certified technicians

The driver

Anyone in the yard

The carrier

25 / 30

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

Pushrod

Clevis pin

None of the above

Slack adjuster

26 / 30

Disabled or caged spring brake chambers can be recognized how?

By the retractable caging bolt

You can't

By the protrusion of the caging bolt or other similar mechanism

By the missing caging bolt

27 / 30

Pushrod stroke is produced by what?

Manually adjusting the slack adjuster

Compressed air entering the brake chamber

The governor

Pressure applied to the foot valve

28 / 30

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

It moves forward

Nothing

It is returned to its original position

It remains in the locked position

29 / 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 and emergency brake will not apply

The parking brake will apply, but not the emergency brake

30 / 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 release automatically

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

Your score is

Manitoba Air Brake Test 03

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