Lean Six Sigma Green Belt Certification Lean Six Sigma Green Belt Core Lean Principles 1

Question 1

What does 'takt time' represent in Lean methodology?

Accepted Answer

The rate at which a product must be completed to meet customer demand

Answer

Takt time is calculated by dividing available production time by customer demand. It sets the production rhythm needed to meet customer requirements without overproducing or underproducing.

Question 2

Which of the following best describes the purpose of a Value Stream Map (VSM)?

Accepted Answer

To document the flow of materials and information required to deliver a product or service to the customer

Answer

A Value Stream Map visually depicts every step in the flow of materials and information, helping teams identify value-added versus non-value-added activities and prioritize improvement efforts.

Question 3

In the 5S Lean framework, what does the third 'S' — 'Shine' — require teams to do?

Accepted Answer

Clean the work area and inspect equipment during the cleaning process

Answer

'Shine' (Seiso) goes beyond basic cleaning — teams clean the workspace while simultaneously inspecting equipment for defects, leaks, or abnormalities, turning cleaning into a form of inspection.

Question 4

Which Lean concept refers to designing a process or device so that mistakes are physically impossible or immediately obvious?

Accepted Answer

Poka-Yoke

Answer

Poka-Yoke (mistake-proofing) involves design mechanisms that prevent errors from occurring or make defects instantly detectable before they move to the next step, reducing reliance on operator vigilance.

Question 5

In Lean, 'Mura' refers to which type of process problem?

Accepted Answer

Unevenness or inconsistency in workflow and production levels

Answer

Mura means unevenness or variability in the flow of work. When production levels fluctuate unpredictably, it creates both idle time and overburden, leading to additional waste throughout the system.

Lean Six Sigma Green Belt Certification Practice Test

Lean Six Sigma Green Belt Certification Practice Test

Lean Six Sigma Green Belt Certification Lean Six Sigma Green Belt Core Lean Principles 1