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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is stacktip downwash?
💡 Hint: Think about how wind interacts with stacks.
Question 2
Easy
Why should the gas velocity be at least 1.5 times the wind speed?
💡 Hint: Consider the relationship between gas and wind speeds.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What happens during stacktip downwash?
- Gases disperse into the atmosphere
- Gases recirculate back to the surface
- Gases are contained within the stack
💡 Hint: Remember the interaction of wind and stack emissions.
Question 2
Stack gas velocity should be higher than wind speed to reduce downwash. True or False?
- True
- False
💡 Hint: Consider the relationship between gas and wind speeds.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A new factory is proposed to be built in an urban area. The stack’s gas velocity is expected to be 10 m/s, and the average wind speed is 5 m/s. Evaluate whether this design prevents stacktip downwash, and recommend changes if needed.
💡 Hint: Evaluate the relationship between the gas velocity and wind speed.
Question 2
Discuss how a tall building positioned near a factory stack might impact local air quality. What strategies should be employed to mitigate potential negative effects?
💡 Hint: Consider the phenomenon of building downwash.
Challenge and get performance evaluation