240 Chapter Eight Lean Operations and the Toyota Production System 6. Which of the following does not belong to the seven sources of waste? a. Rework b. Overtime c. Transportation d. Inventory - LO8-3 7. In a service operation, we can compute the value-added time by simply looking at the labor content. True or false? 2. True b. False 8. A company is increasing the percentage value-added time in the operation. Its value-added time and its flow rate remain unchanged. What will happen to its inventory turns? (Recall from Chapter 2 that inventory turns are computed as flow rate divided by inventory.) a. Inventory turns will go up. b. Inventory turns will stay constant. c. Inventory turns will go down. d. Cannot determine from the given information LO8-4 9. What are the two pillars of the Toyota Production System? a. Just-in-time and waste reduction b. Waste reduction and built-in quality c. Built-in quality and just-in-time d. Process improvement and waste reduction 10. What is the roof in the "house-shaped" representation of the Toyota Production System? a. Just-in-time b. Waste reduction c. Built-in quality d. Process improvement LO8-5 11. Taichi Ohno built the Toyota Production System with the metaphor of a tiger in mind. Rapid and decisive movements were, in his view, the best way to match supply with demand. True or false? a True b. False LO8-6 12. If customers want to have 1000 units over 10 days, one should aim at producing 100 units per day instead of doing 111 units per day in the beginning and then having a little safety buffer at the end. True or false? a. True b. False 13. If the demand rate increases, the takt time: a. Increases b. decreases. 14. If the takt time increases, the operation requires: a. more workers b. fewer workers. LO8-5 15. Which of the following objectives is more important in a pull system? a. Producing at the rate of demand b. Keeping the equipment utilization