Brake System Knowledge Quiz

Tech A says that hydraulic pressure is applied equally in all directions throughout a closed system. Tech B says that air in the hydraulic system will cause the brake pedal to be spongy. Who is correct?

• Tech A

• Tech B

• Both A and B

• Neither A nor B

Tech A says that a brake pedal that does not return all the way causes the brake warning light on the instrument panel to stay on. Tech B says that a brake pedal that does not return causes the brake lights to stay on. Who is correct?

• Tech A

• Tech B

• Both A and B

• Neither A nor B

Tech A says that brake fluid should periodically be checked for excessive moisture content. Tech B says that brake fluid should be replaced every 12,000 miles. Who is correct?

• Tech A

• Tech B

• Both A and B

• Neither A nor B

Tech A says that DOT 5 brake fluid should be used in all vehicles today because it is silicone based and will not absorb water. Tech B says that DOT 4 and DOT 3 are not recommended for use in ABS systems. Who is correct?

• Tech A

• Tech B

• Both A and B

• Neither A nor B

Tech A says that the secondary piston in a master cylinder is operated by hydraulic force. Tech B says that the brake pedal return spring returns the master cylinder pistons to their original position. Who is correct?

• Tech A

• Tech B

• Both A and B

• Neither A nor B

Tech A says that the low level brake fluid switch on a master cylinder turns on the brake warning light when the system is low on fluid. Tech B says that the low level switch also monitors the condition of the fluid and activates the warning light when the brake fluid needs to be replaced. Who is correct?

• Tech A

• Tech B

• Both A and B

• Neither A nor B

Tech A says that the metering valve controls pressure to the rear brakes. Tech B says that the proportioning valve controls pressure to the front brakes. Who is correct?

• Tech A

• Tech B

• Both A and B

• Neither A nor B

Tech A says that the vacuum booster increases the vacuum in the brake system. Tech B says that the vacuum booster uses vacuum and atmospheric pressure to multiply the driver's foot pressure applied to the master cylinder push rod. Who is correct?

• Tech A

• Tech B

• Both A and B

• Neither A nor B

Tech A says that input force divided by the area of the input gives working pressure. Tech B says that working pressure multiplied by the surface area of the output piston gives output force. Who is correct?

• Tech A

• Tech B

• Both A and B

• Neither A nor B

What is hydraulics?

• Hydraulics is a mechanical function that operates through the force of liquid or liquid pressure

• Hydraulics is a mechanical function that operates through the Sun Light

• Hydraulics is a mechanical function that operates through the wind energy

• All options are correct