lubrication

Question 1

What is friction?

Answer 1

Resistance to movment between two surfaces that touch each other

Question 2

Name three types of friction

Answer 2

Sliding -resistance to movement that is produced, when one surface slides across another

rolling-is the resistance to movement of one surface rolling over another

fluid-offers less resistance than rolling or sliding friction

Question 3

name four functions of a lubricant

Answer 3

reduce friction
protect against corosion
carry away heat
help seal

Question 4

how does lubract reduce friction?

Answer 4

coats moving parts

Question 5

what type of film has the most friction?

Answer 5

boundary film

Question 6

why is it important to bring the shaft rotation up to speed as soon as possible?

Answer 6

to establish full film lubrication

Question 7

what is viscosity?

Answer 7

is a measure of fluid friction (resistance to flow)

Question 8

fluids that poor very slow have a high viscosity true or false

Answer 8

true

Question 9

units of viscosity ?

Answer 9

centistoke
sus(saybolt universal seconds)
ssu

Question 10

centistoke?

Answer 10

British form of viscosity

Question 11

what is flash point

Answer 11

lowest temp at which vapour above an oil ignites when a flame is passed over it