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3.2. Viscosity
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2 cards from this lesson. Good the night before a test.
Try these first
- 1.
What is viscosity?
Hint
Think about how honey flows compared to water.
- 2.
What factors affect viscosity?
Hint
Consider what happens to syrup in heat.
- 3.
What does viscosity measure?
- Resistance to flow
- Density of a fluid
- Temperature
- Pressure
Hint
Think about which term relates to movement.
- 4.
True or False: Newtonian fluids have a constant viscosity regardless of shear rate.
- True
- False
Hint
Remember the definition of Newtonian fluids.
- 5.
A fluid has a dynamic viscosity of 0.8 Pa.s and flows through a pipe with a velocity gradient of 5 s^-1. Calculate the shear stress.
Hint
Use the relation τ = μ (du/dy).
- 6.
Discuss how varying viscosity with temperature could affect the design of an oil pipeline transporting crude oil.
Hint
Think about how temperature changes could alter pipe dimensions and materials used.
Exercises
Total Questions
2
Estimated Time
4 min
Passing Score
70%
Instructions
- Read each question carefully
- You can use hints if you need help
- Complete all questions before submitting
4 more questions available
Enrol freeQuiz
Total Questions
2
Estimated Time
4 min
Passing Score
70%
Instructions
- Read each question carefully
- You can use hints if you need help
- Complete all questions before submitting
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Enrol freeChallenge Problems
Total Questions
2
Estimated Time
4 min
Passing Score
70%
Instructions
- Read each question carefully
- You can use hints if you need help
- Complete all questions before submitting