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 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

2 / 30

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

Pushrod

None of the above

Slack adjuster

Clevis pin

3 / 30

Disabled or caged spring brake chambers can be recognized how?

By the retractable caging bolt

You can't

By the missing caging bolt

By the protrusion of the caging bolt or other similar mechanism

4 / 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 into the chamber

The distance that the return spring moves out of the chamber

5 / 30

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

It remains in the locked position

It is returned to its original position

Nothing

It moves forward

6 / 30

Who can perform re-adjustments on automatic slack adjusters?

Only certified technicians

The driver

The carrier

Anyone in the yard

7 / 30

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

None of the above

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

It fills up the reservoirs with compressed air

It fills up the lines and hoses with compressed air

8 / 30

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

A metal rod called a pushrod

A return spring

A flexible rubber disc called a diaphragm

A clevis

9 / 30

Compressed air is converted into what?

Mechanical force to apply the brakes and stop the vehicle

More air

Weight

Power

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

What do the pushrod and slack adjuster do?

They reduce the pressure to the brakes

They increase the braking force sent to the brakes

They control the pressure going to the brake chamber

They link the brake chamber to the brake assembly

12 / 30

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

Brake failure or fade

A release of the air pressure

A release of the brakes

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

13 / 30

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

Using a compressing bolt

Using a spring bolt

Using a caging bolt

None of the above

14 / 30

Are spring brakes air applied like service brakes?

Only on fire trucks

Yes

Only on older vehicles

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

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

17 / 30

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

Exhaust ports of brake valves

Air-dryer exhaust port

Next to the governor

On or near the vehicle's axles

18 / 30

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

Yes

Only in emergency situations

Only with older vehicles

19 / 30

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

The drop in brake force can be significant

Nothing of consequence happens

The drums crack

Brake force increases

20 / 30

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

Pulled

Moved right

Moved left

Pushed

21 / 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 70 and 80 psi

Between 55 and 65 psi

Between 50 and 60 psi

22 / 30

What is another word for compressing the spring?

Cage

Sage

Doyle

Cramp

23 / 30

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

Normal braking

Parking

Emergency braking

Going downgrade

24 / 30

What do front wheel-limiting valves do?

They control the air flow from the governor

None of the above

They maximize the braking pressure required on the front steering axle

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

25 / 30

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

Beside the primary tank

At the steering wheels

At the rear wheels

At each wheel

26 / 30

Pushrod stroke is produced by what?

Manually adjusting the slack adjuster

Pressure applied to the foot valve

The governor

Compressed air entering the brake chamber

27 / 30

What are the two kinds of air brake chambers called?

Normal and emergency

Air and hydraulic

Service and spring

Primary and secondary

28 / 30

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

Avoid driving on highways

Drive with hazard lights on

Travel to short destinations, no further than 160 km

Have the vehicle inspected and repaired immediately

29 / 30

What happens when a spring brake chamber has been disabled?

The parking and emergency brake will not apply

The emergency brake will apply, but not the parking brake

The parking brake will apply, but not the emergency brake

All brakes will not apply

30 / 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

Your score is

Manitoba Air Brake Test 03

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