Class F -3- Braking Systems - Level 3 | Führerschein Österreich

Class F -3- Braking Systems - Level 3

3 of 4 Levels

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Category: Class F -3- Braking Systems - Level 3

You have coupled a compressed air braked trailer. When is the supply line under pressure?

Only as long as the towing vehicle is braking

Only as long as there is pressure in the brake line to the trailer

Only as long as the towing vehicle is not braking

As long as there is sufficient supply pressure in the brake system of the towing vehicle

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Category: Class F -3- Braking Systems - Level 3

What is the purpose of the brake line in the compressed air brake of a trailer?

It triggers braking on the trailer when the service brake or parking brake is applied on the towing vehicle

It enables the supply of compressed air to the trailer from the towing vehicle

It ensures automatic braking of the trailer if it is uncoupled from the towing vehicle

It ensures automatic braking of the trailer if it tears away from the towing vehicle

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Category: Class F -3- Braking Systems - Level 3

A compressed air braked trailer has a manually adjustable brake force regulator. What does it mean when the brake force regulator is in this position?

The brake force regulator is set for the unloaded trailer. During emergency braking, about 1/3 of the maximum brake pressure is applied to the wheel brake cylinders of the trailer

The brake force regulator is set for half loading of the trailer. During emergency braking, about 2/3 of the maximum brake pressure is applied to the wheel brake cylinders of the trailer

The compressed air brake of the trailer is switched off

The brake force regulator is set for full loading of the trailer. During emergency braking, maximum brake pressure is applied to the wheel brake cylinders of the trailer

4 / 15

Category: Class F -3- Braking Systems - Level 3

What is the operating pressure in a compressed air brake system?

This is the pressure difference between cut-in and cut-out pressure

This is the pressure from which driving with the tractor is permitted

This is the pressure which is 50% below the cut-out pressure

This is the pressure that can be reached at maximum during braking

5 / 15

Category: Class F -3- Braking Systems - Level 3

A compressed air braked trailer has a manually adjustable brake force regulator. The trailer is unloaded. What consequences can it have if the brake force regulator is in this position during driving?

During braking, the braked wheels can lock. This can cause the trailer to push the towing vehicle away

During braking, the braked wheels can lock. This can cause the trailer to skid

During braking, the braking effect of the trailer is too low. This can cause the trailer to push the towing vehicle away

When the trailer tears away from the towing vehicle, no braking is triggered. The breakaway protection is no longer effective

6 / 15

Category: Class F -3- Braking Systems - Level 3

What is the purpose of the supply line in the compressed air brake of a trailer?

It ensures automatic braking of the trailer if the trailer tears away from the towing vehicle during driving

It triggers braking on the trailer when the service brake or parking brake is applied on the towing vehicle

It ensures automatic braking of the trailer if the trailer is uncoupled from the towing vehicle

It enables the supply of compressed air to the trailer from the towing vehicle

7 / 15

Category: Class F -3- Braking Systems - Level 3

A compressed air braked trailer has a manually adjustable brake force regulator. What does it mean when the brake force regulator is in this position?

The compressed air brake of the trailer is switched off

The brake force regulator is set for the unloaded trailer. During emergency braking, about 1/3 of the maximum brake pressure is applied to the wheel brake cylinders of the trailer

The brake force regulator is set for half loading of the trailer. During emergency braking, about 2/3 of the maximum brake pressure is applied to the wheel brake cylinders of the trailer

The brake force regulator is set for full loading of the trailer. During emergency braking, maximum brake pressure is applied to the wheel brake cylinders of the trailer

8 / 15

Category: Class F -3- Braking Systems - Level 3

A compressed air braked trailer has a manually adjustable brake force regulator. The trailer is fully loaded. What consequences can it have if the brake force regulator is in this position during driving?

During braking, the braked wheels can lock. This can cause the trailer to skid

During braking, the braking effect of the trailer is too low. This can cause the trailer to push the towing vehicle away

When the trailer tears away from the towing vehicle, no braking is triggered. The breakaway protection is no longer effective

During braking, the braked wheels can lock. This can cause the trailer to push the towing vehicle away

9 / 15

Category: Class F -3- Braking Systems - Level 3

A compressed air braked trailer has a manually adjustable brake force regulator. What does it mean when the brake force regulator is in this position?

The brake force regulator is set for full loading of the trailer. During emergency braking, maximum brake pressure is applied to the wheel brake cylinders of the trailer

The brake force regulator is set for the unloaded trailer. During emergency braking, about 1/3 of the maximum brake pressure is applied to the wheel brake cylinders of the trailer

The compressed air brake of the trailer is switched off

The brake force regulator is set for half loading of the trailer. During emergency braking, about 2/3 of the maximum brake pressure is applied to the wheel brake cylinders of the trailer

10 / 15

Category: Class F -3- Braking Systems - Level 3

You want to tow a trailer equipped with a two-line compressed air brake system with a tractor. What is the purpose of the brake force regulator on the trailer?

It prevents locking of the braked wheels during braking

It limits the maximum possible supply pressure in the reservoir of the trailer

It allows the maximum possible braking force to be adapted to the loading condition of the trailer

It limits the maximum possible brake pressure in the wheel brake cylinders of the trailer

11 / 15

Category: Class F -3- Braking Systems - Level 3

You start a tractor. How can you tell that the compressed air brake system has reached operating pressure?

The pressure regulator no longer blows off

There are warning buzzers that fall silent

The warning light for pressure supply on the dashboard goes out

The parking brake can be released

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Category: Class F -3- Braking Systems - Level 3

You have coupled a compressed air braked trailer. When is the brake line under pressure?

When the service brake is applied on the towing vehicle

When the parking brake is applied on the towing vehicle

Only when the trailer is equipped with an endurance brake

Only as long as the towing vehicle is not braking

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Category: Class F -3- Braking Systems - Level 3

During braking, the braked wheels can lock. This can cause the trailer to push the towing vehicle away

When the trailer tears away from the towing vehicle, no braking is triggered. The breakaway protection is no longer effective

During braking, the braking effect of the trailer is too low. This can cause the trailer to push the towing vehicle away

During braking, the braked wheels can lock. This can cause the trailer to skid

14 / 15

Category: Class F -3- Braking Systems - Level 3

A compressed air braked trailer has a manually adjustable brake force regulator. What does it mean when the brake force regulator is in this position?

The brake force regulator is set for half loading of the trailer. During emergency braking, about 2/3 of the maximum brake pressure is applied to the wheel brake cylinders of the trailer

The brake force regulator is set for the unloaded trailer. During emergency braking, about 1/3 of the maximum brake pressure is applied to the wheel brake cylinders of the trailer

The brake force regulator is set for full loading of the trailer. During emergency braking, maximum brake pressure is applied to the wheel brake cylinders of the trailer

The compressed air brake of the trailer is switched off

15 / 15

Category: Class F -3- Braking Systems - Level 3

You want to tow a trailer equipped with a two-line compressed air brake system with a tractor. What settings are available on manually adjustable brake force regulators on the trailer?

Half loaded

Empty

Fully loaded

Release

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Class F -3- Braking Systems – Level 3