Alberta Air Brake Test 05

Taking the Alberta Air Brake practice test is undoubtedly one of the most crucial things you have to do before taking the official exam. By spending long hours studying and preparing for the test, you will aware of the importance of obtaining your air brake endorsement.

1 / 30

When brakes are adjusted incorrectly, which statement is incorrect?

Push rods push less distance

Cast iron drums expand when heated

It can create a total loss of brakes and a runaway

Eventually, the chamber can bottom out

2 / 30

What do engine retarders essentially do?

Change the exhaust valve timing, essentially turning the engine into an air compressor

Slows the engine rpm down

None of the above

Speeds up the engine rpm

3 / 30

What is referred to as 'bobtailing'?

Having two trailers without a load

None of the above

Having one trailer without a load

Operating a tractor without a trailer

4 / 30

Why should you inspect the rotors of air disc brakes often?

Rust forms on the discs quickly

None of the above

It's part of the pre-trip inspection procedures

Cracks hiding behind the brake pads and backing plate will eventually become visible

5 / 30

When preparing the vehicle for checking the brake adjustment, what range should the air pressure be?

It does not matter

Low pressure

Operating range

High pressure

6 / 30

What is not one of the procedure for triggering slack adjusters?

Apply and release no more than two full brake applications on one second intervals

Air pressure above 100 psi

Add two additional brake applications after a five second delay

Spring brakes released and brake drums cool

7 / 30

Which is the only automatic slack adjuster that uses brake application stroke for adjustments?

Haldex

Bendix

Crewson Industries

Arvin Meritor

8 / 30

Other than the Arvin Meritor, how much of an adjustment is with other slack adjusters?

5/8

7/16

3/4

1/2

9 / 30

When adjusting manual slack adjusters, how far do you need to depress the lock sleeve?

50%

75%

25%

Completely

10 / 30

What is the optimum re-adjustment guideline to slack adjusters?

1/4 inch (7 mm)

3/8 inch (9.5 mm)

3/4 inch (19 mm)

1/2 inch (13 mm)

11 / 30

Adjusting the manual slack adjusters incorrectly, what would the results be?

May cause a longer braking distance

A complete replacement of the system

May result in no service or park brakes

None of the above

12 / 30

If the slack adjuster has a square adjusting bolt, what size wrench do you use?

7/16 open end wrench

7/16 box end wrench

5/16 open end wrench

5/16 box end wrench

13 / 30

Which will not assist drivers to brake smoothly?

Ensure brakes are correctly adjusted

Ensure the following distance is at the minimum distance and no more

Ensure the tires are in good condition

Ensure the load is balanced

14 / 30

What happens if brake stroke indicators are missing?

They must be retrofitted if missing

The truck is deemed to be out of service immediately

They can be left off since they are not required

At some point they should be added

15 / 30

When adjusting manual slack adjusters, how much should be backed off?

1/2 turn

1/8 turn

1/4 turn

1/3 turn

16 / 30

If the slack adjuster has a hexagonal adjuster, what size wrench do you use?

7/16 box end wrench

5/16 open end wrench

5/16 box end wrench

7/16 open end wrench

17 / 30

What is the purpose of a brake drum?

To assist in helping stop the vehicle

To keep the brake shoes together

It dissipates heat into the atmosphere

To reduce lining wear

18 / 30

Arvin Meritor slack adjusters are recognized by what?

The name is stamped on the side of the unit

You can't

It has a round adjusting head on the front end of the self adjusting mechanism

The square adjusting head on the end of the self adjusting mechanism

19 / 30

On all automatic slack adjusters, the brake is being tightened correctly if...

There is free play

The wrench is turning the s-cam shaft in the opposite direction as the brake application

The wrench is turning the s-cam shaft in the same direction as the brake application

There is no movement of the s-cam

20 / 30

When adjusting the manual slack adjusters, you should confirm correct wrench rotation by...

It does not matter which way the wrench is turned

The s-cam should rotate in the same direction as the brake application

The push rod should move into the brake chamber

The push rod starts to pull out of the brake chamber

21 / 30

With s-cam brakes correctly adjusted and applied, which statement is false?

Correct adjustment provides the maximum push-rod stroke before the lining touches the drum

Properly adjusted brakes will be using the upper half of available push rod stroke

Application with a cool drum is less than half of the available stroke

Correct adjustment provides a minimum of push-rod stroke before the lining touches the drum

22 / 30

What is a major disadvantage of removing the trailer from the tractor?

It significantly reduces the traction of the drive axels

More difficult to steer

It increases fuel consumption

It causes the nose of the tractor to lift up, causing a drag

23 / 30

To safely operate a 'bobtailed' tractor, which statement is false?

Avoid using auxiliary retarders at their powerful settings

Drive below the speed limit on dry roads

Reduce speed when road conditions are slippery

Avoid excessive acceleration and heavy brake applications

24 / 30

When should you adjust automatic slack adjusters?

During the pre-trip inspection

Regular maintenance

During the post-trip inspection

You never adjust them

25 / 30

Why should you ease off the brake just before stopping?

To prevent jerking back

To save wear on the brakes

No reason

It uses up less air

26 / 30

With the s-cam brakes incorrectly adjusted and applied, which statement is false?

With increased lining to drum clearance, the push-rod stroke is longer

The application is more than half of the available stroke

With increased lining to drum clearance, the push-rod stroke moves less

Brakes out of adjustment will be using the lower half of available push rod stroke

27 / 30

What is the optimum free stroke measurement to slack adjusters?

1/2 inch (13 mm)

1/4 inch (7 mm)

3/4 inch (19 mm)

3/8 inch (9.5 mm)

28 / 30

What do auxiliary retarders do?

They replace the service brakes

None of the above

They help to control speed on downgrades and preserve the service brakes for emergency stopping

They replace the park brakes

29 / 30

When checking brake adjustment using the applied stroke method, which statement is false?

Have another person hold a full-service brake application, or use a device to hold the brake pedal down

Mark the push rod where it exits the brake chamber

Measure the distance the mark has traveled from the face of the brake chamber

Make a series of brake applications to reduce system air pressure to 50 psi

30 / 30

When braking with a 'bobtailed' tractor, where does the weight shift to?

The steering wheels

The rear of the vehicle

The passenger side

The driver's side

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Alberta Air Brake Test 05

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