Brake Final

Question 1

What is the purpose of the brake system?

Answer 1

To slow vehicle in a predictable and react to driver input

Question 2

What is the Law of Conservation of Energy?

Answer 2

It states that energy cannot be created or destroyed

Question 3

If two objects are traveling at the same speed and one has twice the mass, how much more kinetic energy does it have?

Answer 3

If going at the same speed it has twice the kinetic energy

Question 4

The relationship to velocity is exponential, what does that mean?

Answer 4

It means if two objects have equal mass but one is trtaveling faster, the faster moving object has FOUR times the as much kinetic energy

Question 5

What are the ways heat is transferred in the brake system?

Answer 5

Convection
Radiation
Conduction

Question 6

What is the term brake lining referring to?

Answer 6

The brake pads on disc brakes and shoes on drum brakes

Question 7

What is the term friction surface referring to?

Answer 7

The disc and the drum

Question 8

Conduction is?

Answer 8

Heat transfer through contact

Question 9

What is the difference between natural and forced convention?

Answer 9

Natural convection is at work even at rest, forced convection is using mechanical means and centrifugal force to cool the system

Question 10

What is the term heat sink mean?

Answer 10

A large mass to store heat energy

Question 11

The majority of the disc’s mass if for?

Answer 11

Strength and heat absorption

Question 12

Define the term COF?

Answer 12

The Coefficient of Friction is the relative amount of friction between two surfaces

Question 13

What is brake fade?

Answer 13

When the brakes are too hot, effectively having no friction to slow the vehicle

Question 14

What is the difference between static friction and kinetic friction?

Answer 14

Static friction is the friction between stationary surfaces in contact. Kinetic friction is the forces that oppose the motion of a moving object

Question 15

What is regenerative braking?

Answer 15

When a generator converts the kinetic energy in electrical energy

Question 16

Throughout the range of temperatre, the brake fluid must maintain certain criteria, name them

Answer 16

Boiling point and viscosity

Question 17

Name the brake fluid characteristics (7)

Answer 17

Miscibility
Stability
Rubber compatibility
Non-Corrosiveness
Lubrication
Hygroscopicity

Question 18

Brake fluid can damage?

Answer 18

Other rubber components and paint

Question 19

Brake fluid has three different ratings, name them

Answer 19

DOT 3
DOT 4
DOT 5

Question 20

What are the aspects of liquid and liquid systems?

Answer 20

Liquids are not compressible

The pressure is the same in a closed system

Question 21

What is the basic principle in regards to the transmission on the pressure in confined spaces?

Answer 21

Pressure ina confined area is exerted equally in all directions

Question 22

Fluid pressure is determined by what two factors?

Answer 22

Amount of pressure in the system

And the working surface area

Question 23

Pressure equals?

Answer 23

Force divided by area

Question 24

Two ways to increase force in the hydraulic system?

Answer 24

Larger output pision

Smaller input piston

Question 25

The difference between Dynamic and Static fluid systems?

Answer 25

Hydrodynamic means the fluid is in motion

Hydrostatic means very little fluid movement