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

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

Air pressure above 100 psi

Spring brakes released and brake drums cool

Add two additional brake applications after a five second delay

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

2 / 30

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

7/16

3/4

1/2

5/8

3 / 30

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

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

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

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

The application is more than half of the available stroke

4 / 30

What happens if brake stroke indicators are missing?

At some point they should be added

The truck is deemed to be out of service immediately

They can be left off since they are not required

They must be retrofitted if missing

5 / 30

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

5/16 box end wrench

5/16 open end wrench

7/16 open end wrench

7/16 box end wrench

6 / 30

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

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

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

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

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

7 / 30

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

The push rod should move into the brake chamber

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

The push rod starts to pull out of the brake chamber

It does not matter which way the wrench is turned

8 / 30

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

There is no movement of the s-cam

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

9 / 30

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

High pressure

It does not matter

Operating range

Low pressure

10 / 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

11 / 30

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

Crewson Industries

Arvin Meritor

Bendix

Haldex

12 / 30

What do engine retarders essentially do?

None of the above

Speeds up the engine rpm

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

Slows the engine rpm down

13 / 30

What is the purpose of a brake drum?

To assist in helping stop the vehicle

It dissipates heat into the atmosphere

To keep the brake shoes together

To reduce lining wear

14 / 30

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

75%

25%

Completely

50%

15 / 30

Arvin Meritor slack adjusters are recognized by what?

The name is stamped on the side of the unit

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

You can't

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

16 / 30

What is referred to as 'bobtailing'?

None of the above

Having two trailers without a load

Having one trailer without a load

Operating a tractor without a trailer

17 / 30

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

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

It significantly reduces the traction of the drive axels

It increases fuel consumption

More difficult to steer

18 / 30

When should you adjust automatic slack adjusters?

Regular maintenance

You never adjust them

During the post-trip inspection

During the pre-trip inspection

19 / 30

What do auxiliary retarders do?

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

None of the above

They replace the park brakes

They replace the service brakes

20 / 30

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

Mark the push rod where it exits the brake chamber

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

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

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

21 / 30

Which will not assist drivers to brake smoothly?

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

Ensure brakes are correctly adjusted

Ensure the load is balanced

Ensure the tires are in good condition

22 / 30

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

The passenger side

The driver's side

The rear of the vehicle

The steering wheels

23 / 30

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

1/4 turn

1/2 turn

1/3 turn

1/8 turn

24 / 30

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

It's part of the pre-trip inspection procedures

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

None of the above

Rust forms on the discs quickly

25 / 30

Why should you ease off the brake just before stopping?

To save wear on the brakes

No reason

It uses up less air

To prevent jerking back

26 / 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

27 / 30

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

7/16 box end wrench

5/16 open end wrench

7/16 open end wrench

5/16 box end wrench

28 / 30

When brakes are adjusted incorrectly, which statement is incorrect?

Cast iron drums expand when heated

It can create a total loss of brakes and a runaway

Eventually, the chamber can bottom out

Push rods push less distance

29 / 30

What is the optimum free stroke measurement to slack adjusters?

1/4 inch (7 mm)

3/8 inch (9.5 mm)

3/4 inch (19 mm)

1/2 inch (13 mm)

30 / 30

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

3/4 inch (19 mm)

1/4 inch (7 mm)

1/2 inch (13 mm)

3/8 inch (9.5 mm)

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Alberta Air Brake Test 05

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