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

When are spring brakes designed to work?

When going downhill

At highways speeds

Only on icy road conditions

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

2 / 30

Compressed air is converted into what?

Mechanical force to apply the brakes and stop the vehicle

Weight

More air

Power

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

None of the above

By means of a large coil spring that provides enough force to hold the brakes in the applied position

4 / 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 100 and 110 psi

Between 50 and 60 psi

Between 70 and 80 psi

5 / 30

What is another word for compressing the spring?

Cramp

Doyle

Cage

Sage

6 / 30

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

Brake force increases

Nothing of consequence happens

The drums crack

The drop in brake force can be significant

7 / 30

What are the two kinds of air brake chambers called?

Service and spring

Normal and emergency

Primary and secondary

Air and hydraulic

8 / 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

9 / 30

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

Only in emergency situations

Yes

Only with older vehicles

10 / 30

What do the pushrod and slack adjuster do?

They control the pressure going to the brake chamber

They link the brake chamber to the brake assembly

They reduce the pressure to the brakes

They increase the braking force sent to the brakes

11 / 30

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

Pulled

Pushed

Moved left

Moved right

12 / 30

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

Nothing

It remains in the locked position

It is returned to its original position

It moves forward

13 / 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

14 / 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

15 / 30

Disabled or caged spring brake chambers can be recognized how?

You can't

By the missing caging bolt

By the protrusion of the caging bolt or other similar mechanism

By the retractable caging bolt

16 / 30

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

At each wheel

At the steering wheels

Beside the primary tank

At the rear wheels

17 / 30

Who can perform re-adjustments on automatic slack adjusters?

The driver

Anyone in the yard

The carrier

Only certified technicians

18 / 30

Are spring brakes air applied like service brakes?

Yes

Only on fire trucks

Only on older vehicles

19 / 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

Next to the governor

Air-dryer exhaust port

20 / 30

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

Parking

Normal braking

Going downgrade

Emergency braking

21 / 30

What happens when a spring brake chamber has been disabled?

The parking and emergency brake will not apply

All brakes will not apply

The parking brake will apply, but not the emergency brake

The emergency brake will apply, but not the parking brake

22 / 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

23 / 30

Pushrod stroke is produced by what?

Pressure applied to the foot valve

Manually adjusting the slack adjuster

Compressed air entering the brake chamber

The governor

24 / 30

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

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

They release automatically

25 / 30

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

Diaphragms

A clamp assembly

S-shafts

Bolts

26 / 30

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

Slack adjuster

Clevis pin

Pushrod

None of the above

27 / 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

28 / 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

29 / 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

30 / 30

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

Using a compressing bolt

Using a spring bolt

None of the above

Using a caging bolt

Your score is

Manitoba Air Brake Test 03

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