Advanced Quality Control Interview Questions (2026 Guide) Part 3 of 3
In this article, we will cover important Intermediate Quality Control Interview Questions related to 7 QC Tools, Quality Management System (QMS), 5S, 8 Wastes, 3G, 3M, Poka-Yoke, Kaizen, Six Sigma, Root Cause Analysis, CAPA, 8D, and PPM. These questions will help freshers as well as experienced professionals prepare confidently for quality engineering and quality assurance interviews in manufacturing industries.
What is Production Part Approval Process (PPAP)?
- There are 5 core tools of Quality and PPAP is one of them.
- The 5 core tools are APQP, FMEA, PPAP, SPC, MSA
- It is a document which is done by the supplier and approved by the customer.
- It gives confirmation to the customer that only approved part or product will be delivered. No other parts will be delivered.
- This document is done before full scale production begins, which tells that the supplier will fulfil the customer requirement and will deliver quality products.
Below is the list of all 18 elements accompanied by a brief description for each element:
- Design Records
- Engineering Change Note (ECN)
- Customer Engineering Approval
- Design Failure Mode and Effects Analysis (DFMEA)
- Process Flow Diagram
- Process Failure Mode and Effects Analysis (PFMEA)
- Control Plan
- Measurement System Analysis (MSA) Studies
- Dimensional Results
- Material Performance Test Results
- Initial Process Studies
- Qualifies Laboratory Documentation
- Appearance Approval Report (AAR)
- Sample Product
- Master Sample
- Checking AIDS
- Records of compliance with customer specification requirements
- Part Submission Warrant (PSW)
Explain Statistical Process Control (SPC)
- There are 5 core tools of Quality and PPAP is one of them.
- The 5 core tools are APQP, FMEA, PPAP, SPC, MSA
- It is a document which is done by the supplier and approved by the customer.
- It gives confirmation to the customer that only approved part or product will be delivered. No other parts will be delivered.
- This document is done before full scale production begins, which tells that the supplier will fulfil the customer requirement and will deliver quality products.
Explain Measurement System Analysis (MSA)
- There are 5 core tools of Quality and PPAP is one of them.
- The 5 core tools are APQP, FMEA, PPAP, SPC, MSA
- It is a document which is done by the supplier and approved by the customer.
- It gives confirmation to the customer that only approved part or product will be delivered. No other parts will be delivered.
- This document is done before full scale production begins, which tells that the supplier will fulfil the customer requirement and will deliver quality products.
What is a control chart?
- There are 5 core tools of Quality and PPAP is one of them.
- The 5 core tools are APQP, FMEA, PPAP, SPC, MSA
- It is a document which is done by the supplier and approved by the customer.
- It gives confirmation to the customer that only approved part or product will be delivered. No other parts will be delivered.
- This document is done before full scale production begins, which tells that the supplier will fulfil the customer requirement and will deliver quality products.
What is CAPA (Corrective and Preventive Action)?
- There are 5 core tools of Quality and PPAP is one of them.
- The 5 core tools are APQP, FMEA, PPAP, SPC, MSA
- It is a document which is done by the supplier and approved by the customer.
Difference between Corrective and Preventive Action?
What is FMEA and DFMEA?
- There are 5 core tools of Quality and PPAP is one of them.
- The 5 core tools are APQP, FMEA, PPAP, SPC, MSA
- It is a document which is done by the supplier and approved by the customer.
- It gives confirmation to the customer that only approved part or product will be delivered. No other parts will be delivered.
- This document is done before full scale production begins, which tells that the supplier will fulfil the customer requirement and will deliver quality products.
How do you ensure continuous improvement?
- There are 5 core tools of Quality and PPAP is one of them.
- The 5 core tools are APQP, FMEA, PPAP, SPC, MSA
- It is a document which is done by the supplier and approved by the customer.
- It gives confirmation to the customer that only approved part or product will be delivered. No other parts will be delivered.
- This document is done before full scale production begins, which tells that the supplier will fulfil the customer requirement and will deliver quality products.
How do you perform quality audits?
- There are 5 core tools of Quality and PPAP is one of them.
- The 5 core tools are APQP, FMEA, PPAP, SPC, MSA
Difference (Easy Table)
| Feature | Nominal Size | Tolerance |
|---|---|---|
|
Meaning |
Basic size |
Allowed variation |
|
Purpose |
Design reference |
Manufacturing limit |
|
Example |
50 mm |
±0.02 mm |
Scenario-Based Quality Control Interview Questions
What would you do if you find a major defect in production?
How do you handle pressure during inspections?
Describe a time when you improved quality in a process
How do you deal with team conflicts regarding quality issues?
Tips to Crack Quality Control Interviews
Be ready with real-life examples
Learn industry standards
Practice common questions
Why 5M is Important and its examples?
- Helps find root causes systematically
- Prevents missing important factors
- Improves problem-solving accuracy
- Supports tools like 8D, Six Sigma, and Lean
If a product defect occurs:
- Check Man → Was the worker trained?
- Check Machine → Is the machine working properly?
- Check Material → Is the raw material good?
- Check Method → Is the process correct?
- Check Measurement → Are results measured accurately?