Lean tools quiz

Knowledge check

Pick one answer per question. Explanations appear after you submit.

1. 1. Not one of the eight wastes:

   • Waiting
   • Motion
   • Buyer complaints
   • Overproduction

2. 2. Available time 28,800 s, demand 240 pieces. Takt is:

   • 60 s
   • 90 s
   • 120 s
   • 150 s

3. 3. WIP 45 bundles, throughput 9 bundles/hour. Lead time is:

   • 3 h
   • 4 h
   • 5 h
   • 6 h

4. 4. OEE components:

   • Speed × Skill × Safety
   • Availability × Performance × Quality
   • People × Process × Product
   • Cost × Time × Yield

5. 5. SMED converts:

   • Manual to automatic
   • Internal setup to external and simplifies remaining internal
   • Small to large batches
   • Preventive to corrective

6. 6. TOC's next step after 'exploit the constraint' is:

   • Elevate
   • Subordinate everything else to the constraint
   • Ignore
   • Automate

7. 7. Kanban limits WIP by:

   • Firing operators
   • A signal-based cap on work in each stage
   • Managerial approval
   • Inspection

8. 8. Value-added work is defined as:

   • Anything a worker does
   • Work the customer would pay for, done right first time
   • Anything measured
   • Non-defect work

9. 9. Local optimisation is dangerous because:

   • It's slow
   • Improving a non-constraint does not increase throughput and may hide waste
   • It's expensive
   • It requires software

10. 10. Abrupt WIP removal is:

    • Best practice
    • Risky — expose problems at a pace the system can solve
    • Necessary weekly
    • Required by 5S