COM COM Quality Management & Control 2 — Questions and Answers
Question 1: What is the primary goal of Statistical Process Control (SPC) in manufacturing operations?
- Increase labor productivity
- Detect and prevent process deviations before defects occur (Correct answer)
- Reduce material costs
- Automate quality inspections
Correct answer: Detect and prevent process deviations before defects occur
SPC uses statistical methods to monitor and control processes in real time, allowing managers to detect problems before defective products are produced.
Question 2: Which quality tool uses a fishbone diagram structure to identify root causes of a problem?
- Scatter diagram
- Ishikawa (cause-and-effect) diagram (Correct answer)
- Histogram
- Run chart
Correct answer: Ishikawa (cause-and-effect) diagram
The Ishikawa (or fishbone) diagram organizes potential causes of a problem into categories such as people, process, equipment, and environment.
Question 3: Cost of Quality (CoQ) includes which two major categories?
- Fixed costs and variable costs
- Cost of conformance and cost of non-conformance (Correct answer)
- Direct costs and indirect costs
- Prevention costs and training costs
Correct answer: Cost of conformance and cost of non-conformance
CoQ is divided into cost of conformance (prevention and appraisal) and cost of non-conformance (internal and external failure costs).
Question 4: What does 'first pass yield' (FPY) measure in quality management?
- Total units produced per shift
- Percentage of units completing a process correctly without rework (Correct answer)
- Number of customer complaints received
- Production line speed
Correct answer: Percentage of units completing a process correctly without rework
First pass yield measures the percentage of units that pass through a process correctly on the first attempt without requiring rework or scrapping.
Question 5: Which certification framework is most commonly used by US operations managers to demonstrate quality management system compliance?
- ISO 14001
- ISO 9001 (Correct answer)
- ISO 45001
- ISO 27001
Correct answer: ISO 9001
ISO 9001 is the internationally recognized quality management standard used by organizations to demonstrate consistent quality and customer satisfaction.
Question 6: What is 'poka-yoke' in quality management?
- A Japanese scheduling technique
- An error-proofing mechanism that prevents mistakes from occurring (Correct answer)
- A supplier evaluation method
- A type of quality audit
Correct answer: An error-proofing mechanism that prevents mistakes from occurring
Poka-yoke refers to mistake-proofing devices or procedures designed to prevent errors from occurring or immediately detect them when they do.
COM COM Quality Management & Control 2
What is the primary goal of Statistical Process Control (SPC) in manufacturing operations?