Lec 10

Question 1

Example of rheological

Answer 1

1) viscosity
2)elasticity
3) plasticity

Question 2

Why measure viscosity

Answer 2

Effective way to know the state or fluidity of a liquid

Question 3

2 categories of viscosity

Answer 3

1)newtonian fluid(viscosity constant )
2) non-newtonian fluid(viscosity changes)

Question 4

Factor affecting the viscosity

Answer 4

-Temp(increase of temp,viscosity decrease)
-air bubbles (affect the accuracy)

Question 5

Sonicator

Answer 5

Used to degassing the sample

Question 6

Type of viscometer

Answer 6

1)vibro(measure electric current)
2)rotational (running torque)
3)capillary (difference in pressure)
4)falling ball(time take for object to fall at specific distance)
5)cup type (time take for sample to flow out)

Question 7

Application of viscosity

Answer 7

1) food industry
2)cosmetic product
3)building industry
4) petroleum industry
5) quality check