CAC CAC Quality Assurance and Inspection 2 — Questions and Answers
Question 1: What is the role of a Certificate of Conformance (CoC) in acceptance processes?
- It is a supplier's written declaration that products meet specified requirements (Correct answer)
- It certifies that an inspector is qualified to perform acceptance testing
- It documents the shipping conditions for temperature-sensitive products
- It records final payment approval after delivery
Correct answer: It is a supplier's written declaration that products meet specified requirements
A CoC is a supplier-issued document declaring that delivered goods meet all applicable contractual and specification requirements.
Question 2: In statistical process control (SPC), what does a control chart primarily help an acceptance professional determine?
- Whether a production process is stable and within acceptable variation limits (Correct answer)
- The exact cost of defective units produced
- The number of inspectors needed for a production run
- Whether a supplier's ISO certification is current
Correct answer: Whether a production process is stable and within acceptable variation limits
Control charts track process variation over time and signal when a process is trending out of control before defects are produced.
Question 3: Which sampling method selects inspection lots by dividing the population into groups and randomly sampling from each group?
- Stratified sampling (Correct answer)
- Simple random sampling
- Systematic sampling
- Convenience sampling
Correct answer: Stratified sampling
Stratified sampling divides the population into homogeneous subgroups (strata) and draws random samples from each, improving representativeness.
Question 4: What is a Corrective Action Request (CAR) used for in quality assurance?
- Formally requiring a supplier or process owner to investigate and eliminate the root cause of a nonconformance (Correct answer)
- Requesting additional materials to replace defective items
- Authorizing overtime for inspection staff during peak production
- Approving minor deviations from specification without investigation
Correct answer: Formally requiring a supplier or process owner to investigate and eliminate the root cause of a nonconformance
A CAR formally initiates root cause analysis and corrective action to prevent recurrence of a defect or quality escape.
Question 5: During receiving inspection, a CAC professional finds that actual delivered quantities differ from the packing list. What should be documented?
- A discrepancy report noting the overage or shortage and notifying procurement (Correct answer)
- Nothing, if the shortage is under 5% of the order
- Only the total received quantity on the purchase order
- A new purchase order for the missing items without notification
Correct answer: A discrepancy report noting the overage or shortage and notifying procurement
Any quantity discrepancy must be formally documented and communicated to procurement to resolve billing, scheduling, and contractual obligations.
Question 6: What does 'lot traceability' enable in an acceptance and quality system?
- Tracking materials and products through each stage of production and delivery using unique lot identifiers (Correct answer)
- Monitoring inspector certification renewal dates
- Logging the number of audits performed per supplier per year
- Recording supplier payment terms for each contract
Correct answer: Tracking materials and products through each stage of production and delivery using unique lot identifiers
Lot traceability links materials, processes, and finished products so that any quality issue can be traced to its source and scope contained.
CAC CAC Quality Assurance and Inspection 2
What is the role of a Certificate of Conformance (CoC) in acceptance processes?