Class C -3- Braking Systems - Level 2 | Führerschein Österreich

Class C -3- Braking Systems - Level 2

2 of 4 Levels

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Category: Class C -3- Braking Systems - Level 2

How high must the protection pressure of a compressed air brake system be at minimum?

At least 15% of the cut-out pressure

At least 65% of the cut-in pressure

At least 15% of the cut-in pressure

At least 65% of the cut-out pressure

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Category: Class C -3- Braking Systems - Level 2

How can you check the function of the multi-circuit protection valve in a compressed air brake system?

By repeatedly pressing the brake pedal in short intervals

By observing the pressure drop on the pressure gauge for the supply pressure during partial braking

By observing the pressure drop on the pressure gauge for the supply pressure when releasing the parking brake

By observing the display behavior on the pressure gauge for the supply pressure during pumping up after a larger pressure loss

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Category: Class C -3- Braking Systems - Level 2

What is the purpose of the ALB regulator of a compressed air brake system?

It automatically limits the brake pressure in the wheel brake cylinders depending on the existing road condition

It automatically limits the compressor pressure depending on the existing number of supply reservoirs

It automatically limits the supply pressure in the supply reservoirs depending on the existing axle load

It automatically limits the brake pressure in the wheel brake cylinders depending on the existing axle load

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Category: Class C -3- Braking Systems - Level 2

You are checking the function of the multi-circuit protection valve of a compressed air brake system. What pressure must remain in the remaining supply circuits when you release the pressure supply in one circuit?

At least 10% of the cut-in pressure

At least 65% of the cut-out pressure

At least 10% of the cut-out pressure

At least 65% of the cut-in pressure

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Category: Class C -3- Braking Systems - Level 2

Your truck is equipped with a leaf or parabolic spring suspension. What leads to malfunctions of the ALB regulator of the compressed air brake system?

An incorrectly adjusted ALB regulator

Too low tire pressure

The break of several leaf springs on the rear axle

A defective ALB regulator

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Category: Class C -3- Braking Systems - Level 2

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

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

This is the pressure from which the truck may be driven

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

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

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Category: Class C -3- Braking Systems - Level 2

What is the function of the multi-circuit protection valve of a compressed air brake system?

It secures the pressure in the compressor if a wheel brake cylinder fails

It secures the pressure of the storage spring in the spring brake cylinder if the service brake system fails

It secures a minimum pressure in the remaining supply circuits if one supply circuit becomes leaky

It ensures pressure equalization between the individual supply circuits

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Category: Class C -3- Braking Systems - Level 2

What does the air dryer of a compressed air brake system do?

The dry air increases the braking effect

The dry air reduces the compressed air consumption during braking

No condensation water reaches the valves of the compressed air brake system

The valves of the compressed air brake system are not contaminated by antifreeze

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Category: Class C -3- Braking Systems - Level 2

You start your truck. How can you determine that the compressed air brake system has reached the operating pressure?

There are warning buzzers that fall silent

The warning lights for the pressure supply on the dashboard go out

The spring brake can be released

The pressure regulator no longer vents

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Category: Class C -3- Braking Systems - Level 2

How can you recognize that the filter cartridge of the air dryer of the compressed air brake system needs to be changed?

When condensation water escapes when operating the drain valves on the supply reservoirs of the brake system

By a warning light illuminating on the dashboard

When white smoke escapes from the exhaust of the vehicle

By a corresponding display in the on-board computer display

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Category: Class C -3- Braking Systems - Level 2

How does an ABS braking system in a truck basically work?

If a wheel begins to lock during braking, the ABS control unit increases the brake pressure on the affected wheel

Speed sensors deliver the speed value for each individual wheel to a control unit during braking

The ABS control unit measures whether a wheel begins to lock during braking

If a wheel begins to lock during braking, the ABS control unit reduces the brake pressure on the affected wheel

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Category: Class C -3- Braking Systems - Level 2

What is an ABS in a truck?

An anti-lock braking system for the wheel brakes

An anti-lock braking system for the vehicle engine

A starting aid

An automatic speed control for the vehicle transmission

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Category: Class C -3- Braking Systems - Level 2

What do you understand by the protection pressure of a compressed air brake system?

This is the pressure that must be present in the tires of the truck for safe driving

This is the pressure with which the truck can still be braked if a leak occurs in one supply circuit

This is the self-stabilization pressure of a compressor

This is the pressure that must be present in the supply reservoirs of the intact supply circuits if a leak occurs in one supply circuit

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Category: Class C -3- Braking Systems - Level 2

From which component does a dual-circuit compressed air brake system split into multiple circuits?

From the tractor brake valve

From the pressure regulator

From the multi-circuit protection valve

From the overflow valve

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Category: Class C -3- Braking Systems - Level 2

What is the function of the air dryer of a compressed air brake system?

It removes the moisture from the air delivered by the compressor

It dries the air drawn in by the engine for the combustion of the fuel

It dries the air compressed by the turbocharger

It prevents the windows in the cab of the truck from fogging up

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Class C -3- Braking Systems – Level 2