DMD Quality Management & Control 2

Question 1

What does 'Cpk' measure in manufacturing quality?

Accepted Answer

Process capability relative to specification limits and centering

Answer

Cpk measures how centered and capable a process is relative to its specification limits, accounting for process mean offset.

Question 2

Which quality cost category includes scrap, rework, and warranty claims?

Accepted Answer

Failure costs

Answer

Failure costs (internal and external) include scrap, rework, warranty claims, and customer returns resulting from quality defects.

Question 3

In digital manufacturing, what is the role of an Automated Optical Inspection (AOI) system?

Accepted Answer

To detect surface defects and dimensional errors using cameras and image processing

Answer

AOI uses high-resolution cameras and image processing algorithms to automatically detect surface defects, missing components, or dimensional errors.

Question 4

What is the purpose of a Failure Mode and Effects Analysis (FMEA)?

Accepted Answer

To proactively identify potential failure modes and their impact on product or process quality

Answer

FMEA systematically evaluates potential failure modes before they occur, assigning Risk Priority Numbers (RPN) to prioritize corrective actions.

Question 5

Which statistical technique in Six Sigma helps determine which input variables significantly affect a process output?

Accepted Answer

Design of Experiments (DOE)

Answer

Design of Experiments (DOE) systematically varies input factors to identify which ones have the greatest effect on the process output.

DMD - Digital Manufacturing and Design Technology Certification Practice Test