Fluid Flow – Section 1

21. Water is a

A. newtonian fluid
B. pseudoplastic
C. dilatant
D. rheopectic

Correct Answer: A. newtonian fluid
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22. Which of the following affect the Kolmogorov eddy size?

A. Stirrer speed
B. Physical properties of the liquid
C. Size and type of impeller
D. All of these

Correct Answer: D. All of these
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23. A liquid is flowing at 11,400 l.h-1 along a pipeline having a diameter of 4 cm. If the liquid has a density of 1 g.ml-1 and viscosity of 0.001kg .m-1.s-1, then the liquid would be in the

A. laminar phase
B. transient phase
C. turbulent phase
D. any of the phase

Correct Answer: C. turbulent phase
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24. The viscosity of a fluid increases with the length of time that it is being mixed. This fluid would be best described as being
A. newtonian
B. rheopectic
C. viscoelastic
D. thixotropic

Correct Answer: B. rheopectic
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25. Which of the following can act as a shear protectorant?

A. Serum
B. Silicone oil
C. Glucose
D. Glutamic acid

Correct Answer: A. Serum
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