Match List - I with List - II:

Choose the correct answer from the options given below:

Correct option is C

• (A) Operator doing his job properly and self-check at the point of production or purchase → (II) Source Inspection
  Source inspection happens at the point of origin. This involves the operator checking their work and ensuring no defective product is passed forward, making this a clear match.

• (B) That classifies items as being either good or defective → (IV) Attribute Inspection
  Attribute inspection refers to binary classification — pass/fail, good/defective — with no measurement on a scale. So, this aligns perfectly with the statement.

• (C) Assisted by checklist and controls such as fail-safe devices → (I) Poka-Yoke
  Poka-Yoke is a mistake-proofing approach using tools like checklists, warning systems, or jigs to prevent errors — matching the description here.

• (D) Classification of items as falling on a continuum scale such as dimension or strength → (III) Variable Inspection
  Variable inspection involves measuring quantitative characteristics, e.g., thickness, strength, dimensions — not just binary classification.

Information Booster:

• Source Inspection ensures quality at the source, reducing chances of defective items moving down the production line.

• Attribute Inspection is fast and simple, used when features are either acceptable or not — like checking for a crack or missing part.

• Poka-Yoke (Japanese for "mistake-proofing") focuses on preventing defects using simple tools or systems to alert or block errors.

• Variable Inspection provides detailed numeric analysis which helps in statistical quality control (SQC) and process improvement.

• These inspection techniques are vital in Total Quality Management (TQM) and Six Sigma practices.

• Selection of inspection type depends on product complexity, inspection cost, and criticality of defect.

• Knowing inspection types helps industries ensure zero-defect delivery and reduce wastage and rework.