Alberta Air Brake Test 04

Studying the Alberta Driver’s Guide and the Air Brake Manual is recommended. Mastering the concepts of air brakes, such as the main components, signs of brake failure, and maintenance schedule, is crucial. Additionally, simulation tests are incredibly helpful in building confidence and improving test-taking skills. Armed with a solid foundation of knowledge and the practice and experience gained from the simulation tests, you can approach the official exam with a high degree of confidence, knowing that you are well-prepared to ace it.

1 / 30

How are failures in the supply circuit recognized?

The air pressure gauges not replenishing when the air pressure gets below the governor cut-in level

During pre-trip inspections

After a post-trip inspection

During brake failure

2 / 30

During a roadside inspection, what happens if the trailer air supply valve does not work properly?

The vehicle must return to the yard

The driver receives a ticket

The employer receives a ticket

The vehicle will be placed out-of-service

3 / 30

If the trailer does lose traction during a trailer supply line failure, what happens?

None of the above

The trailer will swing

The ABS will activate

It will take three times as long to stop in a straight line

4 / 30

Rather than using mechanical spring park brakes to hold the foundation brakes on for the emergency brake, what can be done instead?

Increase the diameter of the air hoses

Nothing can be done

Air from the service tank is supplied to the service chambers

Increase the size of the brake pads

5 / 30

During emergency braking, which statement is false?

Hold a steady brake application to avoid additional loss of air

Monitoring air pressure gauges for proper operation

When safely stopped, the vehicle should not be driven until repairs are completed

Pump the brake pedal until air builds up in the lines

6 / 30

Foundation brakes are the mechanical component at the axle ends. If they are not working properly, what happens?

The air brake system will not be able to stop the vehicle

The driver will need to use the emergency brakes to stop the vehicle

The driver should apply the park brakes

The driver should find a place to come to a safe stop

7 / 30

What is the problem with air pressure park brakes?

None of the above

Not enough pressure to park

Air pressure drains out of the system, the park brakes will release

They are not as tight as spring brakes

8 / 30

What will a failure in the park circuit will cause?

Park and emergency brake service circuits to lose air pressure

Parking brakes only will lose air pressure

Trailer brakes only will lose air pressure

All brakes will lose air pressure

9 / 30

Is the trailer supply valve part of the tractor's protection system?

Only if towing tandem trailers

Yes

Straight trucks only

10 / 30

Having a very powerful emergency brake, twice as powerful as spring park brakes, what is the risk?

Having a load shift in an emergency

Brake lockup in an emergency application

Brake failure on the tractor

Brake failure on the trailers

11 / 30

What do the air lines that connect to the trailer carry?

Most of the air supply

All of the air supply only

Hydraulic fluid

The air supply and the brake signal to the trailer service and park circuits

12 / 30

What does the service/control line do?

Carries the control system from the foot valve to the trailer service circuit relays

Blocks the control system

None of the above

Disconnects the trailer service relays

13 / 30

Why do flat deck haulers run the trailer air lines from the back of the frame to the landing leg area of the trailer, rather than from the back of the cab to the nose of the trailer?

It's the shortest path

It's the straightest path

No reason

Causes less interference from loads that overhang the front of the deck

14 / 30

What's the purpose of the slack adjuster?

It forces the air intake valve

It automatically adjusts the slack in the brake lines

None of the above

It converts push rod force from the chamber to torque on the s-cam shafts

15 / 30

What year did were spring park brakes required on trailers?

1981

1976

1996

1986

16 / 30

What does the tractor protection valve do?

Uses supply line pressure to open the service line

Stops air pressure from entering the lines

Closes off the service line

Controls the supply line

17 / 30

If the trailer service brakes are not working and the vehicle must be stopped quickly, what should the driver do?

Take a longer route to stop the vehicle

Apply the mechanical brakes

Pump the brakes

Pull the trailer air supply valve

18 / 30

What is the only tractor air system failure that will cause a service circuit's brakes not to work during a service application?

Primary service circuit failure

Secondary service circuit failure

None of the above

Emergency brake failure

19 / 30

If there is any doubt about the security of the glad hand couplers during coupling, pre-trip and en-route inspections, what should happen?

Drive with caution until more evidence is gathered

Add it to the report

The Inform your employer

Repairs must be made immediately

20 / 30

What should glad hand couplers have on them when not pulling a trailer?

Dead-end couplers

Semi-automatic couplers

Full-automatic couplers

None of the above

21 / 30

What is the minimum lining thickness for brake linings from the Commercial Vehicle Safety Alliance (CVSA) roadside inspection out-of-service criteria?

3/4 inch (19 mm)

1/4 inch (7 mm)

1/2 inch (13 mm)

3/8 inch (9.5 mm)

22 / 30

What can become a problem of a tractor using coiled plastic air lines?

They are often too short and will stretch, causing the lines to shrink in diameter

They become tough to attach to the trailers

Nothing

They become brittle over time

23 / 30

What will enforcement officers during Level 1 Commercial Vehicle Safety Alliance (CVSA) inspection will check?

The psi of the secondary tank

The couplers

Both parts of the tractor's protection system

The psi of the primary tank

24 / 30

During a secondary service circuit failure, which brakes will not apply?

The steering axle brakes

All of the brakes

The trailer brakes

The drive axel brakes

25 / 30

Pushing in the trailer air supply valve (red button) with the park control valve (yellow button) pulled during these vehicle inspections will allow what to happen?

The driver will know if lines were crossed

Any air leaks to be noticed and dealt with before the equipment is put into service

The primary tank is low in air pressure

The secondary tank is low in air pressure

26 / 30

What do glad hand couplers do?

Connects the air lines to the trailer

None of the above

Connects the air lines to the cylinders

Connects the air dryer to the air lines

27 / 30

When would the dash park control valve be used?

Parking on a grade

Poor road conditions

Overnight parking

Any situation where there is a loss of service brakes and a quick stop is required

28 / 30

What will cause the glad hand couplers to leak?

If the air pressure is too much

If the seals are the wrong size

If the seals are soft or degraded

If the couplers are not attached securely

29 / 30

What can you do to remove contamination before attaching the glad hand couplers?

A quick discharge of air pressure before connecting the glad hand couplers to blow contamination out

Blow into the couplers

Shake the couplers for 10 seconds each before connecting the glad hand couplers to shake the contamination out

Nothing

30 / 30

If there is any sign that the trailer service brakes are not working and the vehicle must be stopped quickly, what should the driver do?

Pump the pedal

Apply the park brakes

Pull the trailer supply valve

Downshift

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Alberta Air Brake Test 04

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