6 (a) Below is a diagram of a rotating disc viscometer (FIGURE 4). Explain its operations...

Transcribed Image Text:

6 (a) Below is a diagram of a rotating disc viscometer (FIGURE 4). Explain its operations and limitations as to use. If, in a similar works situation, it is necessary to make measurements on a non-Newtonian liquid, what would be a better instrument to use and why? - Motor Pointer Spring - Dial Spindle Disc FIG. 4 7 viscometer as shown below (FIGURE 5). (b) It is intended to automate the operation of an Ostwald capillary b- - a FIG. 5 Capillary C It must be automatically fed with a sample, and then the sample viscosity measured at three different shear rates. What additional equipment would be required? Sketch a typical installation and set out the operational steps. 6 (a) Below is a diagram of a rotating disc viscometer (FIGURE 4). Explain its operations and limitations as to use. If, in a similar works situation, it is necessary to make measurements on a non-Newtonian liquid, what would be a better instrument to use and why? - Motor Pointer Spring - Dial Spindle Disc FIG. 4 7 viscometer as shown below (FIGURE 5). (b) It is intended to automate the operation of an Ostwald capillary b- - a FIG. 5 Capillary C It must be automatically fed with a sample, and then the sample viscosity measured at three different shear rates. What additional equipment would be required? Sketch a typical installation and set out the operational steps.