Certified Six Sigma Black Belt Exam Lean Enterprise Concepts 3

Question 1

A lean team calculates that takt time is 60 seconds but cycle time at a bottleneck station is 80 seconds. What is the correct lean response?

Accepted Answer

Reduce cycle time at the bottleneck station through waste elimination or additional resources

Answer

When cycle time exceeds takt time, the process cannot meet customer demand, so waste elimination or resource addition at the constraint is required.

Question 2

In lean, 'mura' refers to:

Accepted Answer

Unevenness or variability in workflow and demand

Answer

Mura (unevenness) is one of the three Ms in lean and represents inconsistency or variability in workload that generates the other two Ms.

Question 3

Which lean tool is specifically designed to balance workload evenly across operators in a work cell?

Accepted Answer

Operator balance chart (yamazumi chart)

Answer

An operator balance chart (yamazumi) visually displays each operator's cycle time versus takt time, revealing imbalances and opportunities to rebalance tasks.

Question 4

A lean practitioner maps material and information flow to identify sources of waste and plan improvement. This mapping tool is called:

Accepted Answer

Value stream map (VSM)

Answer

Value stream mapping captures the current state of material and information flow, calculates key metrics, and serves as the basis for designing a future state.

Question 5

Standard work in lean is best described as:

Accepted Answer

The current best-known method documented and consistently applied while improvement continues

Answer

Standard work documents the current best method (sequence, timing, WIP) to ensure consistency and serve as the baseline for kaizen improvement.

Certified Six Sigma Black Belt Exam Practice Test

Certified Six Sigma Black Belt Exam Practice Test

Certified Six Sigma Black Belt Exam Lean Enterprise Concepts 3