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 clevis

A metal rod called a pushrod

A return spring

A flexible rubber disc called a diaphragm

2 / 30

What is another word for compressing the spring?

Doyle

Cramp

Cage

Sage

3 / 30

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

Going downgrade

Parking

Normal braking

Emergency braking

4 / 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

5 / 30

When are spring brakes designed to work?

Only on icy road conditions

At highways speeds

When going downhill

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

6 / 30

Who can perform re-adjustments on automatic slack adjusters?

The carrier

Anyone in the yard

Only certified technicians

The driver

7 / 30

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

Pushed

Moved left

Pulled

Moved right

8 / 30

What is referred to as stroke length?

The distance that the return spring moves into the chamber

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

9 / 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

None of the above

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

10 / 30

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

The drop in brake force can be significant

The drums crack

Nothing of consequence happens

Brake force increases

11 / 30

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

S-shafts

Bolts

Diaphragms

A clamp assembly

12 / 30

What happens when a spring brake chamber has been disabled?

The emergency brake will apply, but not the parking brake

The parking brake will apply, but not the emergency brake

The parking and emergency brake will not apply

All brakes will not apply

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

None of the above

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

14 / 30

Are spring brakes air applied like service brakes?

Only on fire trucks

Only on older vehicles

Yes

15 / 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

16 / 30

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

It is returned to its original position

It moves forward

Nothing

It remains in the locked position

17 / 30

Compressed air is converted into what?

Mechanical force to apply the brakes and stop the vehicle

Weight

Power

More air

18 / 30

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

Between 70 and 80 psi

Between 50 and 60 psi

Between 100 and 110 psi

Between 55 and 65 psi

19 / 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

20 / 30

Pushrod stroke is produced by what?

Pressure applied to the foot valve

The governor

Compressed air entering the brake chamber

Manually adjusting the slack adjuster

21 / 30

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

Only in emergency situations

Yes

Only with older vehicles

22 / 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

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

None of the above

23 / 30

What are the two kinds of air brake chambers called?

Normal and emergency

Primary and secondary

Service and spring

Air and hydraulic

24 / 30

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

At the rear wheels

At the steering wheels

Beside the primary tank

At each wheel

25 / 30

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

Brake failure or fade

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

26 / 30

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

They release automatically

None of the above

They are not located on all of the wheels

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

27 / 30

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

Using a spring bolt

None of the above

Using a caging bolt

Using a compressing bolt

28 / 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

29 / 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

30 / 30

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

Slack adjuster

Clevis pin

None of the above

Pushrod

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Manitoba Air Brake Test 03

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