DMD Quality Management & Control 1 — Questions and Answers
Question 1: Which quality management framework is most commonly referenced in US digital manufacturing certifications for process improvement?
- Six Sigma (Correct answer)
- Kaizen only
- ISO 9000 alone
- Lean only
Correct answer: Six Sigma
Six Sigma is the most widely referenced framework in US digital manufacturing for structured, data-driven process improvement.
Question 2: What does SPC stand for in digital manufacturing quality control?
- Statistical Process Control (Correct answer)
- System Performance Check
- Standard Production Cycle
- Sequential Part Calibration
Correct answer: Statistical Process Control
SPC (Statistical Process Control) uses statistical methods to monitor and control manufacturing processes in real time.
Question 3: Which tool is used to identify the root cause of a manufacturing defect through a visual diagram of cause categories?
- Ishikawa (fishbone) diagram (Correct answer)
- Gantt chart
- Pareto chart
- Control chart
Correct answer: Ishikawa (fishbone) diagram
The Ishikawa (fishbone) diagram organizes potential causes into categories (Man, Machine, Method, Material, etc.) to identify root causes.
Question 4: In a control chart, what does a data point outside the Upper Control Limit (UCL) indicate?
- An out-of-control process (Correct answer)
- Normal variation
- A specification limit violation
- A measurement error only
Correct answer: An out-of-control process
A point outside the UCL signals that the process has shifted or is experiencing special-cause variation requiring investigation.
Question 5: What is the primary purpose of a Measurement System Analysis (MSA) in digital manufacturing?
- To evaluate the accuracy and repeatability of measurement instruments (Correct answer)
- To set production quotas
- To schedule preventive maintenance
- To design new measurement tools
Correct answer: To evaluate the accuracy and repeatability of measurement instruments
MSA assesses whether a measurement system has sufficient accuracy, repeatability, and reproducibility to reliably capture process data.
Question 6: Which DMAIC phase involves collecting baseline data to understand current process performance?
- Measure (Correct answer)
- Define
- Analyze
- Control
Correct answer: Measure
The Measure phase quantifies the current state of the process by collecting relevant data to establish a performance baseline.
DMD Quality Management & Control 1
Which quality management framework is most commonly referenced in US digital manufacturing certifications for process improvement?