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n an experiment, the following shear stress time rate of shear strain values are obtained for a fluid
  • a)
    Newtonian fluid
  • b)
    Bingham plastic
  • c)
    Pseudo plastic
  • d)
    Dilatant
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
n an experiment, the following shear stress time rate of shear strain...
The slope of τ vs ϕ̇ is equal to apparent viscosity of fluid.
Consider average slope (average apparent viscosity)
1. Data points ② and ①
μapp = 1.4 − 0 / 2 − 0 = 0.7
2. Data points ③ and ②
μapp = 2.6 − 1.4 / 3 − 2 = 1.2
3. Data points ④ and ③
μapp = 4 − 2.6 / 4 − 3 = 1.4
Thus as τ increases μapp also increases i.e. the fluid is shear thickening fluid (dilatant).
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Most Upvoted Answer
n an experiment, the following shear stress time rate of shear strain...
The slope of τ vs ϕ̇ is equal to apparent viscosity of fluid.
Consider average slope (average apparent viscosity)
1. Data points ② and ①
μapp = 1.4 − 0 / 2 − 0 = 0.7
2. Data points ③ and ②
μapp = 2.6 − 1.4 / 3 − 2 = 1.2
3. Data points ④ and ③
μapp = 4 − 2.6 / 4 − 3 = 1.4
Thus as τ increases μapp also increases i.e. the fluid is shear thickening fluid (dilatant).
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n an experiment, the following shear stress time rate of shear strain values are obtained for a fluida) Newtonian fluidb) Bingham plasticc) Pseudo plasticd) DilatantCorrect answer is option 'D'. Can you explain this answer?
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