Practice Velocity Gradient And Shear Rate (4.2) - Fluid Flow Through Parallel Plates

Practice: Velocity Gradient and Shear Rate

Lesson 4.2Fluid Flow Through Parallel Plates

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8 questions

Flashcard drill
2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
Define velocity gradient in your own words.
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Think about how fluid velocity changes across a distance.
Question 2.
What does shear stress represent?
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Consider how forces act on surfaces in fluid dynamics.
3Question 3.
What defines a Newtonian fluid?
- Viscosity changes with temperature
- Viscosity remains constant regardless of shear rate
- Viscosity is only a function of pressure
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Think about how viscosity responds to different conditions.
4Question 4.
True or False: In non-Newtonian fluids, viscosity is constant.
- True
- False
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Remember the effects leading to changes in viscosity.
Question 5.
A fluid flows through a 1 cm thick layer between stationary and moving plates at 10 m/s. Calculate the shear stress if the viscosity is 0.8 Pa.s.
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Remember the shear stress formula involving viscosity.
Question 6.
Discuss the implications of temperature variations on the viscosity of honey compared to air when heated.
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Think about how molecular interactions change with temperature.

4 more questions in this section. Enroll free to practise them all.