Lean Six Sigma Green Belt Certification Core Lean Principles 5

Question 1

What does a 'gemba walk' involve in Lean practice?

Accepted Answer

Going to the actual workplace to observe the real process firsthand

Answer

Gemba (Japanese for 'the real place') walks involve leaders and practitioners going to where value is created to observe, learn, and identify waste directly.

Question 2

Which of the following scenarios best represents 'defects' waste in a service industry context?

Accepted Answer

An insurance claim processed incorrectly that must be reworked and resubmitted

Answer

Defects waste in services includes errors such as incorrect data entry, wrong information provided to customers, or any output that fails to meet requirements and requires rework.

Question 3

What is the relationship between cycle time and takt time that indicates a process is balanced correctly?

Accepted Answer

Cycle time should approximately equal takt time

Answer

When cycle time equals takt time, the process produces exactly what customers demand without creating overproduction or causing a backlog.

Question 4

In Lean, which step of the 5S methodology involves removing all unneeded items from the work area?

Accepted Answer

Sort (Seiri)

Answer

Sort (Seiri) is the first S, requiring teams to identify and remove everything not needed for current work, leaving only what is necessary.

Question 5

A manufacturer implements one-piece flow instead of batch processing. Which primary Lean benefit does this most directly achieve?

Accepted Answer

Shorter lead times and faster detection of quality defects

Answer

One-piece flow reduces work-in-process inventory and exposes defects immediately at the next step rather than discovering them after a large batch has been completed.

Lean Six Sigma Green Belt Certification Practice Test

Lean Six Sigma Green Belt Certification Practice Test

Lean Six Sigma Green Belt Certification Core Lean Principles 5