The fluid in which the shearing stress within it is proportional to the velocity gradient across the sheared section, is called a _____________ fluid?
Correct answer: B. Newtonian
- A. Bingham
- B. Newtonian
- C. Perfect
- D. None of these
Explanation
Newtonian fluids obey Newton's law of viscosity, τ = μ(du/dy), so shear stress is directly proportional to the velocity gradient. Bingham fluids require a yield stress before they begin to flow.
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