CAE Quality Assurance & Compliance 3 — Questions and Answers
Question 1: Which EPA standard establishes greenhouse gas emission limits specifically for light-duty vehicles in the United States?
- Clean Air Act Title I – NAAQS
- 40 CFR Part 86 – Light-Duty Vehicle Emission Standards (Correct answer)
- 49 CFR Part 541 – Vehicle Theft Prevention
- 40 CFR Part 1037 – Heavy-Duty Vehicle GHG Standards
Correct answer: 40 CFR Part 86 – Light-Duty Vehicle Emission Standards
40 CFR Part 86 establishes EPA's emission standards for light-duty vehicles and trucks, including greenhouse gas limits under the Clean Air Act.
Question 2: In Statistical Process Control (SPC), a process shows 7 consecutive points trending upward on an X-bar chart but all remain within control limits. What action should be taken?
- No action — the process is in control since no points exceed control limits
- Investigate for a special cause — 7 consecutive trending points signal a non-random pattern (Correct answer)
- Widen the control limits to accommodate the trend
- Immediately stop the production line
Correct answer: Investigate for a special cause — 7 consecutive trending points signal a non-random pattern
The Western Electric Rule for 7 consecutive trending points signals a non-random (special cause) condition even when points stay within control limits.
Question 3: Under IATF 16949, which concept requires automotive suppliers to maintain a documented process for identifying and controlling potentially nonconforming material to prevent unintended use or delivery?
- Containment Action
- Control of Nonconforming Outputs (Correct answer)
- Deviation Permit
- Customer-Specific Requirements
Correct answer: Control of Nonconforming Outputs
IATF 16949 Clause 8.7 — Control of Nonconforming Outputs — requires documented processes to identify, segregate, and disposition nonconforming material.
Question 4: A process capability study yields Cp = 1.45 and Cpk = 0.92. What does this combination indicate?
- The process is capable and centered
- The process has adequate spread but is significantly off-center (Correct answer)
- The process is not capable and is centered
- Both indices indicate a marginal process
Correct answer: The process has adequate spread but is significantly off-center
Cp > 1.33 indicates the process spread fits within tolerances, but Cpk < 1.00 means the process mean is significantly shifted toward one specification limit.
Question 5: Which automotive regulation requires passenger vehicles to be equipped with Electronic Stability Control (ESC) systems?
- FMVSS No. 138
- FMVSS No. 126 (Correct answer)
- FMVSS No. 121
- FMVSS No. 108
Correct answer: FMVSS No. 126
FMVSS No. 126 mandates ESC on all new passenger vehicles and light trucks under 10,000 lbs GVWR, effective with MY 2012.
Question 6: In Design for Six Sigma (DFSS), what does the DMADV methodology stand for?
- Define, Measure, Analyze, Design, Verify (Correct answer)
- Define, Measure, Assess, Develop, Validate
- Design, Measure, Analyze, Define, Verify
- Define, Map, Analyze, Design, Validate
Correct answer: Define, Measure, Analyze, Design, Verify
DMADV — Define, Measure, Analyze, Design, Verify — is the DFSS roadmap used to design new products or processes to Six Sigma quality levels.
Question 7: What is the key distinction between a Deviation Permit and a Concession (waiver) in automotive quality management?
- A deviation permit is issued before production; a concession is issued after product is made (Correct answer)
- A concession applies to tooling; a deviation permit applies to materials
- A deviation permit requires customer approval; a concession does not
- Both terms describe the same approval process
Correct answer: A deviation permit is issued before production; a concession is issued after product is made
A deviation permit authorizes departure from specification before manufacturing begins, while a concession (waiver) accepts nonconforming product that has already been produced.
CAE Quality Assurance & Compliance 3
Which EPA standard establishes greenhouse gas emission limits specifically for light-duty vehicles in the United States?