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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is a free fall mixer?
💡 Hint: Think about how gravity works.
Question 2
Easy
What does a reversible mixer do?
💡 Hint: Consider how it can mix and then empty.
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 type of mixer requires a minimum slump of 50 mm?
- Power mixer
- Free fall mixed
- Both
💡 Hint: Think about the limitations of gravity mixers.
Question 2
True or False: Pan mixers use horizontal shafts to facilitate mixing.
- True
- False
💡 Hint: Recall the structure of different mixer types.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A construction site needs to produce 240 m³ of concrete using a power mixer that has a cycle time of 3 minutes. How many hours will it take if the efficiency is 75%?
💡 Hint: Calculate the effective real output based on efficiency and thus the total needed batches.
Question 2
If a pan mixer has a mixing duration guideline of 5 minutes per batch, but you mixed for only 3 minutes, what issues might arise?
💡 Hint: Think about what mixing does to distribution and uniformity.
Challenge and get performance evaluation