Brake hydraulics

What law of hydraulics does the brake system use?

• Ohm's Law

• Watt's Law

• Pascal's Law

• All of the above

Air in the lines causes what type of problem?

• Hard brake pedal

• Low spongy brake pedal

• Brake noise

• Vibration in the brake pedal during stops

The master cylinder is able to move about how much brake fluid during each brake application?

• 50 ml

• One tablespoon

• One cu. in.

• One teaspoon

Brake fluid pressure is measured in what unit?

• PSI

• Inches

• Pounds

• Sq. in.

How much brake fluid is in a typical master cylinder reservoir?

• 15 to 20 liters

• One pint

• One gallon

• Enough to allow all brakes to become completely worn

The rubber used in most brake system components will swell if exposed to ________.

• water

• engine oil or ATF

• DOT 5 brake fluid

• moisture in the air

When cleaning master cylinder parts (except for rubber parts), use ________.

• clean brake fluid

• denatured alcohol

• Either A or B

• Neither A nor B

What service is being performed in this illustration?

• Lubricating a master cylinder before installation

• Bench bleeding of a master cylinder

• Honing a master cylinder

• Testing master cylinder pressures

What part in the master cylinder helps keep air from contacting the brake fluid yet allows the fluid level to drop as the disc brakes wear?

• Vent valve

• Compensating vale

• Residual valve

• Rubber diaphragm or floating disc

If a 1 inch master cylinder piston has a hundred pounds of force pushing on it how much will the 3 inch caliper piston have ?

• 100 PSI

• 200PSI

• 300PSI

• 400PSI