Advanced Lean and Enterprise Flashcards
7 cards from real Lean Six Sigma Black Belt Certification practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Advanced Lean and Enterprise flashcards as text
In a lean enterprise, 'takt time' is calculated as:
Answer: Available production time divided by customer demand rate
Takt time = available production time ÷ customer demand, setting the required pace of production to meet demand without overproduction.
Which of the following best describes 'mura' in the context of lean waste?
Answer: Unevenness or variability in production flow
Mura refers to unevenness or inconsistency in work flow, which leads to the other wastes (muda) and overburdening (muri).
What is the role of a 'milk run' in lean supply chain management?
Answer: A scheduled route for collecting small lots from multiple suppliers
A milk run is a logistics method where a vehicle follows a fixed route to collect small, frequent shipments from multiple suppliers, reducing inventory and improving flow.
In lean enterprise, which tool is used to balance workload evenly across operators to match takt time?
Answer: Operator balance chart (yamazumi)
An operator balance chart (yamazumi) visually compares each operator's cycle time against takt time to identify imbalances and redistribute work.
What is 'heijunka' in lean production?
Answer: Production leveling to smooth volume and mix over time
Heijunka is production leveling, distributing production volume and product mix evenly over time to reduce mura (unevenness) and enable JIT supply.
A Black Belt notices that a lean project's gains are eroding six months after completion. Which enterprise lean element was most likely missing?
Answer: Sustained standard work and layered auditing
Sustained standard work combined with layered process audits (LPA) is the lean control mechanism that prevents process regression after improvement.
In a lean transformation, what does 'genchi genbutsu' require leaders to do?
Answer: Go and observe the actual place where work happens
Genchi genbutsu (go and see) requires leaders to personally observe work at the gemba (actual workplace) to understand problems directly rather than relying solely on reports.