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

What is referred to as stroke length?

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

The distance that the pushrod travels out of the chamber

2 / 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

3 / 30

Before driving the vehicle, what is considered to be enough air pressure to keep the spring brakes from applying?

Between 50 and 60 psi

Between 55 and 65 psi

Between 70 and 80 psi

Between 100 and 110 psi

4 / 30

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

A release of the air pressure

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

Brake failure or fade

A release of the brakes

5 / 30

What do the pushrod and slack adjuster do?

They increase the braking force sent to the brakes

They link the brake chamber to the brake assembly

They reduce the pressure to the brakes

They control the pressure going to the brake chamber

6 / 30

Are spring brakes air applied like service brakes?

Yes

Only on fire trucks

Only on older vehicles

7 / 30

What are the two kinds of air brake chambers called?

Primary and secondary

Service and spring

Normal and emergency

Air and hydraulic

8 / 30

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

Next to the governor

Exhaust ports of brake valves

On or near the vehicle's axles

Air-dryer exhaust port

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

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

A clamp assembly

Diaphragms

S-shafts

Bolts

11 / 30

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

It moves forward

Nothing

It remains in the locked position

It is returned to its original position

12 / 30

Disabled or caged spring brake chambers can be recognized how?

By the retractable caging bolt

By the protrusion of the caging bolt or other similar mechanism

You can't

By the missing caging bolt

13 / 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

14 / 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

15 / 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

16 / 30

Pushrod stroke is produced by what?

The governor

Pressure applied to the foot valve

Manually adjusting the slack adjuster

Compressed air entering the brake chamber

17 / 30

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

Going downgrade

Parking

Normal braking

Emergency braking

18 / 30

When are spring brakes designed to work?

At highways speeds

Only on icy road conditions

When going downhill

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

19 / 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

The emergency brake will apply, but not the parking brake

All brakes will not apply

20 / 30

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

Moved left

Pushed

Moved right

Pulled

21 / 30

Compressed air is converted into what?

Weight

More air

Power

Mechanical force to apply the brakes and stop the vehicle

22 / 30

Who can perform re-adjustments on automatic slack adjusters?

Anyone in the yard

The driver

The carrier

Only certified technicians

23 / 30

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

A flexible rubber disc called a diaphragm

A return spring

A metal rod called a pushrod

A clevis

24 / 30

What is another word for compressing the spring?

Doyle

Cage

Sage

Cramp

25 / 30

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

They are not located on all of the wheels

None of the above

They release automatically

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

26 / 30

How do spring brake chambers apply the brakes?

None of the above

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

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

27 / 30

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

At the steering wheels

At each wheel

Beside the primary tank

At the rear wheels

28 / 30

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

The drop in brake force can be significant

The drums crack

Brake force increases

Nothing of consequence happens

29 / 30

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

Travel to short destinations, no further than 160 km

Drive with hazard lights on

Avoid driving on highways

Have the vehicle inspected and repaired immediately

30 / 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 caging bolt

Using a spring bolt

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Manitoba Air Brake Test 03

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