Brake System Questions

What is the purpose of the brake servo?

• To increase the force applied to the brakes

• To decrease the force applied to the brakes

• To control the speed of the vehicle

• To enhance the vehicle's fuel efficiency

The purpose of the master cylinder is to:

• Convert pedal force into hydraulic pressure

• Control the engine speed

• Regulate fuel injection

• Manage electrical systems

Most master cylinders are known as tandem master cylinders: what is meant by this term and why is it important?

• A tandem master cylinder has two separate hydraulic circuits.

• A tandem master cylinder is used only in racing cars.

• A tandem master cylinder is a single circuit system.

• A tandem master cylinder is used for aesthetic purposes.

How is vacuum created in the servo?

• By using a vacuum pump

• Through the use of a diaphragm

• By creating a pressure difference

• Using an electric motor

Describe the correct way to test a servo for operation.

• Connect the servo to a power source and a signal generator.

• Check the servo's resistance with a multimeter.

• Inspect the servo for physical damage.

• Test the servo in a real-world application.

Hydraulic fluid cannot be compressed, but the braking force can be increased or decreased. Which of the following describes how the forces can be increased or decreased?

• By changing the diameter of the pistons.

• By altering the type of hydraulic fluid.

• By increasing the temperature of the fluid.

• By using a different type of brake pad.

Give an example of where a larger piston is used in the brakes than the piston used in the master cylinder.

• In a hydraulic brake system

• In a pneumatic brake system

• In an electric brake system

• In a mechanical brake system

Brake fluid is what makes the system operate correctly. The fluid needs certain properties to work correctly. Which of the following is a property of brake fluid?

• High boiling point

• Low viscosity

• Corrosive nature

• High freezing point

Brake fluid may be given a dry boiling point or wet boiling point, what is meant by these terms?

• Dry boiling point is the temperature at which the brake fluid boils when it is new and contains no moisture, while wet boiling point is the temperature at which it boils after absorbing moisture.

• Dry boiling point refers to the boiling point of brake fluid in dry weather, and wet boiling point refers to its boiling point in wet weather.

• Dry boiling point is the temperature at which brake fluid evaporates, and wet boiling point is the temperature at which it condenses.

• Dry boiling point is the temperature at which brake fluid freezes, and wet boiling point is the temperature at which it melts.

The moisture content and boiling point of brake fluid are important because:

• They affect the fluid's ability to transfer heat.

• They determine the fluid's color.

• They influence the fluid's viscosity.

• They impact the fluid's freezing point.