Lean Six Sigma Yellow Belt Certification Control and Sustainment Methods 4

Question 1

Poka-yoke devices are used in the Control phase primarily to:

Accepted Answer

Prevent defects by making errors physically impossible or immediately detectable

Answer

Poka-yoke (mistake-proofing) designs the process or tooling so errors either cannot occur or are caught immediately before becoming defects.

Question 2

Visual management tools, such as shadow boards and floor markings, support sustainment by:

Accepted Answer

Making the standard condition instantly visible so deviations are obvious

Answer

Visual management makes the correct state of the workplace or process immediately apparent so anyone can see at a glance when something is out of place.

Question 3

A warning poka-yoke differs from a control poka-yoke in that it:

Accepted Answer

Alerts the operator to an error but does not stop the process automatically

Answer

A warning poka-yoke (e.g., an alarm or light) signals that an error has occurred, while a control poka-yoke physically prevents the error.

Question 4

Which of the following is the strongest form of mistake-proofing?

Accepted Answer

Physical design that makes incorrect assembly mechanically impossible

Answer

Physical design changes (e.g., asymmetric connectors) are the strongest poka-yoke because they eliminate the possibility of error regardless of operator attention.

Question 5

A visual control is effective in sustainment when it:

Accepted Answer

Communicates process status to anyone who looks, without explanation

Answer

Effective visual controls are self-explaining — anyone walking past the area should immediately understand whether the process is normal or abnormal.

Lean Six Sigma Yellow Belt Certification Practice Test

Lean Six Sigma Yellow Belt Certification Practice Test

Lean Six Sigma Yellow Belt Certification Control and Sustainment Methods 4