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 the optimum free stroke measurement to slack adjusters?

3/4 inch (19 mm)

3/8 inch (9.5 mm)

1/4 inch (7 mm)

1/2 inch (13 mm)

2 / 30

What do auxiliary retarders do?

They replace the service brakes

They replace the park brakes

None of the above

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

3 / 30

What happens if brake stroke indicators are missing?

They must be retrofitted if 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

4 / 30

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

Haldex

Crewson Industries

Arvin Meritor

Bendix

5 / 30

Why should you ease off the brake just before stopping?

It uses up less air

To save wear on the brakes

To prevent jerking back

No reason

6 / 30

What is referred to as 'bobtailing'?

None of the above

Operating a tractor without a trailer

Having one trailer without a load

Having two trailers without a load

7 / 30

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

The driver's side

The passenger side

The steering wheels

The rear of the vehicle

8 / 30

When should you adjust automatic slack adjusters?

During the post-trip inspection

During the pre-trip inspection

You never adjust them

Regular maintenance

9 / 30

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

None of the above

May cause a longer braking distance

May result in no service or park brakes

A complete replacement of the system

10 / 30

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

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

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

11 / 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

12 / 30

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

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

There is no movement of the s-cam

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

There is free play

13 / 30

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

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

It's part of the pre-trip inspection procedures

Rust forms on the discs quickly

None of the above

14 / 30

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

Avoid excessive acceleration and heavy brake applications

Avoid using auxiliary retarders at their powerful settings

Reduce speed when road conditions are slippery

Drive below the speed limit on dry roads

15 / 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

The application is more than half of the available stroke

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

16 / 30

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

3/4

7/16

1/2

5/8

17 / 30

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

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

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

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

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

18 / 30

What do engine retarders essentially do?

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

Speeds up the engine rpm

None of the above

Slows the engine rpm down

19 / 30

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

Operating range

High pressure

It does not matter

Low pressure

20 / 30

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

7/16 box end wrench

5/16 box end wrench

7/16 open end wrench

5/16 open end wrench

21 / 30

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

7/16 open end wrench

7/16 box end wrench

5/16 box end wrench

5/16 open end wrench

22 / 30

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

1/2 turn

1/8 turn

1/4 turn

1/3 turn

23 / 30

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

25%

50%

Completely

75%

24 / 30

When brakes are adjusted incorrectly, which statement is incorrect?

Push rods push less distance

It can create a total loss of brakes and a runaway

Cast iron drums expand when heated

Eventually, the chamber can bottom out

25 / 30

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

3/4 inch (19 mm)

1/4 inch (7 mm)

3/8 inch (9.5 mm)

1/2 inch (13 mm)

26 / 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

27 / 30

What is the purpose of a brake drum?

It dissipates heat into the atmosphere

To reduce lining wear

To assist in helping stop the vehicle

To keep the brake shoes together

28 / 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

More difficult to steer

It increases fuel consumption

It significantly reduces the traction of the drive axels

29 / 30

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

The push rod starts to pull out of the brake chamber

It does not matter which way the wrench is turned

The push rod should move into the brake chamber

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

30 / 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

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Alberta Air Brake Test 05

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