Brake Fluid

What is the purpose of brake fluid in hydraulic brake systems?

• To lubricate the brake components

• To repel water from the brake system

• To absorb water and prevent its accumulation

• To degrade rubber components in the brake system

Answer explanation

Brake fluid in hydraulic brake systems absorbs and prevents the accumulation of water, ensuring optimal brake performance.

Which type of brake fluid is used in most types of light vehicle brake systems?

• Non-petroleum or glycol-based

• Silicon-based

• Petroleum or mineral-based

• Hygroscopic

Answer explanation

Most types of light vehicle brake systems use non-petroleum or glycol-based brake fluid, making it the correct choice.

What type of brake fluid is used in specialized applications, such as auto racing?

• Non-petroleum or glycol-based

• Silicon-based

• Petroleum or mineral-based

• Hygroscopic

Answer explanation

Silicon-based brake fluid is used in specialized applications, such as auto racing. It offers high temperature stability and is less compressible than other types of brake fluids, providing better braking performance.

Which type of brake fluid requires a specialized system as it degrades rubber components?

• Non-petroleum or glycol-based

• Silicon-based

• Petroleum or mineral-based

• Hygroscopic

Answer explanation

Petroleum or mineral-based brake fluid requires a specialized system as it degrades rubber components.

What property must brake fluid have to ensure compatibility with other brake components?

• Constant viscosity

• Low boiling point

• High freezing point

• Hydrophobicity

Answer explanation

Brake fluid must have constant viscosity to ensure compatibility with other brake components.

True or False: The boiling point of brake fluid must be lower than the brake operating temperature.

• True

• False

Answer explanation

False. The boiling point of brake fluid must be higher than the brake operating temperature to prevent brake failure.

Which property of brake fluid prevents evaporation from the brake fluid reservoir?

• Compatibility with brake components

• Constant viscosity

• High boiling point

• High vapor point

Answer explanation

High vapor point prevents evaporation from the brake fluid reservoir.

Which type of brake fluid repels water and cannot mix with other brake fluids?

• Non-petroleum or glycol-based

• Silicon-based

• Petroleum or mineral-based

• Hygroscopic

Answer explanation

Silicon-based brake fluid repels water and cannot mix with other brake fluids.

What effect does water in the brake system have on the boiling point of brake fluid?

• It increases the boiling point

• It decreases the boiling point

• It has no effect on the boiling point

• It causes the fluid to solidify

Answer explanation

Water in the brake system decreases the boiling point of brake fluid.

What is the term for a substance that absorbs water, such as brake fluid?

• Hydrolastic

• Microscopic

• Hygrophilic

• Hygroscopic

Answer explanation

Hygroscopic is the term for a substance that absorbs water, such as brake fluid. It has the property of attracting and retaining moisture from its surroundings.