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Question 1. Which of the following best defines “Kaizen” in the context of manufacturing? A) A one‑time redesign of a product B) Continuous, incremental improvement involving all employees C) Outsourcing non‑core activities to reduce cost D) Implementing fully automated robotics on the shop floor Answer: B Explanation: Kaizen means “change for better” and emphasizes ongoing, small‑scale improvements made by everyone in the organization. Question 2. The primary purpose of Lean Manufacturing is to: A) Increase inventory levels to avoid stock‑outs B) Eliminate non‑value‑added activities (waste) from the process C) Maximize machine utilization regardless of demand D) Focus solely on cost reduction through labor cuts Answer: B Explanation: Lean’s core objective is to remove waste (Muda) and create value from the customer’s perspective. Question 3. In the Toyota Production System, Kaizen is considered a: A) Strategic planning tool B) Quality inspection method C) Continuous improvement strategy to achieve Lean goals D) Supplier selection criterion Answer: C Explanation: Kaizen is the engine that drives the TPS toward Lean objectives by fostering ongoing improvement.
Question 4. Which of the following statements correctly describes “Value Stream Mapping (VSM)”? A) It documents only the financial flow of a product B) It maps every step in a process to identify value‑adding and non‑value‑adding activities C) It is a tool used exclusively for layout design D) It replaces the need for any other Lean tools Answer: B Explanation: VSM visualizes the entire process flow, highlighting where waste exists and where value is created. Question 5. The “Pull System” in Lean manufacturing is best illustrated by: A) Producing to forecasted demand quantities B) Manufacturing items only when a downstream process signals a need C) Building large batches to achieve economies of scale D) Scheduling production based on machine availability alone Answer: B Explanation: A pull system triggers production by actual demand from the next process, reducing overproduction. Question 6. Which of the following is NOT one of the three “Mu” (3M) concepts? A) Muda – waste B) Mura – unevenness C) Muri – overburden D) Mubi – redundancy Answer: D
Answer: B Explanation: This waste occurs when organizations do not tap into the full potential of their workforce. Question 10. In the PDCA cycle, the “Check” step primarily involves: A) Implementing the solution on a pilot basis B) Developing a detailed action plan C) Measuring results against the expected outcomes D) Standardizing the new process across the plant Answer: C Explanation: “Check” is about evaluating the performance of the implemented change to see if goals were met. Question 11. The “5 Whys” technique is used to: A) Generate a list of five possible solutions B) Identify the root cause of a problem by repeatedly asking “why” C) Prioritize five improvement projects each month D) Conduct a five‑minute daily huddle Answer: B Explanation: By asking “why” five times (or until the root cause is uncovered), teams can dig deeper into problems. Question 12. An Ishikawa (Fishbone) diagram helps a team to: A) Plot production schedules on a timeline B) Visualize cause‑and‑effect relationships for a problem C) Map the physical layout of a factory floor
D) Calculate takt time for a process Answer: B Explanation: The fishbone diagram categorizes potential causes of a problem, aiding root‑cause analysis. Question 13. Which type of Kaizen event focuses on improving a single workstation or operation? A) Line Kaizen B) Point Kaizen C) System Kaizen D) Cube Kaizen Answer: B Explanation: Point Kaizen targets a specific point or activity rather than an entire line or system. Question 14. “Gemba” in Lean terminology refers to: A) The visual management board B) The actual place where work is done C) A statistical process control chart D) The fifth step of 5S Answer: B Explanation: Gemba means “the real place” and encourages leaders to observe work directly. Question 15. Which of the following best describes the role of management in a Kaizen culture? A) Solely enforcing compliance with existing procedures B) Providing resources, removing obstacles, and encouraging employee ideas C) Micromanaging every improvement activity
D) Increase the number of steps in a process to fill idle time Answer: B Explanation: Standardized work defines the safest, most efficient method, providing a baseline for further Kaizen. Question 19. Takt time is calculated by: A) Dividing total available production time by customer demand B) Multiplying the number of workers by the shift length C) Adding setup time to processing time D) Subtracting downtime from total operating time Answer: A Explanation: Takt time aligns production rate with the rate of customer demand. Question 20. One‑Piece Flow differs from batch production because: A) It produces large quantities before moving to the next operation B) Items move through each process step individually, reducing WIP C) It requires more inventory to buffer each workstation D) It eliminates the need for any scheduling system Answer: B Explanation: One‑Piece Flow minimizes work‑in‑process and lead time by moving single units through the line. Question 21. In a Kanban system, a “withdrawal Kanban” signals: A) The need to order new raw material from suppliers B) That a downstream process should take a part from upstream inventory
C) The completion of a product for shipment D) A machine breakdown that requires maintenance Answer: B Explanation: Withdrawal Kanban authorizes the downstream station to pull a part from the upstream location. Question 22. Jidoka, also known as “automation with a human touch,” primarily aims to: A) Increase machine speed regardless of quality B) Stop the production line automatically when a defect is detected C) Replace all human operators with robots D) Schedule preventive maintenance once a year Answer: B Explanation: Jidoka empowers machines (or operators) to halt production upon detecting abnormalities, preventing defect propagation. Question 23. A “Poka‑Yoke” device is used to: A) Measure takt time accurately B) Prevent errors by designing fail‑safe mechanisms C) Visualize workflow on a whiteboard D) Calculate overall equipment effectiveness (OEE) Answer: B Explanation: Poka‑Yoke (mistake proofing) ensures that a process cannot be performed incorrectly. Question 24. The Andon system provides: A) Real‑time visual alerts indicating a problem on the production line
A) Lead time includes all waiting periods from order receipt to delivery, while cycle time measures the time to complete a single unit of work. B) Lead time measures only machine runtime, while cycle time includes labor. C) Lead time is always shorter than cycle time. D) Lead time is calculated using takt time, while cycle time is not. Answer: A Explanation: Lead time encompasses the entire order‑to‑delivery duration; cycle time is the time to produce one unit. Question 28. The defect metric “DPMO” stands for: A) Defects Per Minute of Operation B) Defects Per Million Opportunities C) Delays Per Manufacturing Order D) Downtime Per Machine Output Answer: B Explanation: DPMO measures the number of defects per one million opportunities, useful for Six‑Sigma analysis. Question 29. Total Productive Maintenance (TPM) seeks to: A) Increase machine speed at any cost B) Eliminate the six big losses by involving operators in maintenance activities C) Reduce the number of operators on the shop floor D) Outsource all maintenance to third‑party vendors Answer: B Explanation: TPM engages operators in autonomous maintenance to reduce breakdowns, setup losses, etc.
Question 30. Which of the following is NOT one of the “Six Big Losses” in TPM? A) Breakdown loss B) Minor stop loss C) Over‑processing loss D) Reduced speed loss Answer: C Explanation: Over‑processing is a waste (Muda) but not listed among the Six Big Losses (breakdowns, setup/adjustment, idling/minor stops, reduced speed, defects/rework, startup loss). Question 31. In SMED (Single Minute Exchange of Die), the first step is to: A) Convert all internal setup activities to external ones B) Separate internal from external setup operations C) Reduce the total number of changeovers per week D) Train operators on new equipment Answer: B Explanation: SMED begins by distinguishing which tasks require the machine stopped (internal) versus those that can be done while it runs (external). Question 32. A “Pull Kanban” card is typically triggered when: A) Inventory reaches a predetermined reorder point B) The next process signals a need for more parts C) A machine completes its maintenance schedule D) The supplier sends a shipping notice Answer: B
Explanation: Gemba Walks involve leaders visiting the workplace to see processes firsthand and engage workers. Question 36. The “5S” step “Shitsuke” focuses on: A) Sorting tools and materials B) Standardizing cleaning schedules C) Sustaining discipline and habits to maintain 5S practices D) Setting up workstations ergonomically Answer: C Explanation: Shitsuke (Sustain) ensures long‑term adherence to the previous 4S through discipline. Question 37. Which Lean tool is specifically designed to prevent a part from being assembled incorrectly? A) Value Stream Mapping B) Poka‑Yoke C) SMED D) Andon Answer: B Explanation: Poka‑Yoke provides mistake‑proofing to avoid assembly errors. Question 38. When calculating takt time, you must exclude: A) Planned breaks and scheduled maintenance B) Customer demand for the day C) Total operating minutes in a shift D) Number of workstations on the line
Answer: A Explanation: Takt time uses net production time, subtracting breaks, meetings, and planned downtime. Question 39. The “Pull” concept is most closely associated with which production scheduling method? A) MRP (Material Requirements Planning) B) Kanban C) Forecast‑driven batch scheduling D) Fixed‑order quantity (EOQ) Answer: B Explanation: Kanban implements a pull system where downstream demand triggers upstream production. Question 40. In the PDCA cycle, the “Act” phase typically results in: A) Identifying the problem for the next cycle B) Implementing a pilot test on a small scale C) Standardizing the successful change and integrating it into daily work D) Collecting baseline data before any changes Answer: C Explanation: “Act” solidifies improvements by making them standard practice and planning further cycles if needed. Question 41. Which of the following is a primary benefit of implementing 5S in a workspace? A) Increased product variety without additional cost B) Improved safety, organization, and efficiency
B) Scheduling maintenance at the end of each month (Push) vs. performing maintenance after a breakdown (Pull) C) Hiring staff based on forecasted demand (Push) vs. hiring only when vacancies appear (Pull) D) Using a forecast to set inventory levels (Push) vs. using actual sales data to replenish stock (Pull) Answer: D Explanation: Pull systems replenish based on actual consumption, while push relies on forecasts. Question 45. A “One‑Piece Flow” line is most vulnerable to: A) Excessive inventory buildup B) Machine breakdowns causing complete line stoppage C) Long changeover times between batches D) High levels of motion waste Answer: B Explanation: Since items move continuously, a single equipment failure can halt the entire flow. Question 46. Which of the following is a key metric used to evaluate the effectiveness of a Kaizen event? A) Number of new hires during the event B) Percentage reduction in cycle time for the targeted process C) Total number of machines installed in the plant D) Amount of raw material purchased in the month Answer: B Explanation: Kaizen success is measured by tangible improvements such as cycle‑time reduction, defect decrease, or cost savings. Question 47. In the context of Lean, “Heijunka” refers to:
A) Standardized work instructions B) Production leveling to reduce variability (mura) C) Visual management boards D) The process of eliminating overburden (muri) Answer: B Explanation: Heijunka smooths production volumes and mix to avoid peaks and valleys. Question 48. Which of the following statements about “Visual Controls” is TRUE? A) They replace the need for any written procedures. B) They provide immediate, at‑a‑glance information about status, standards, and problems. C) They are only useful in office environments. D) They increase the time required for daily stand‑up meetings. Answer: B Explanation: Visual controls make process status transparent, enabling quick detection of abnormalities. Question 49. The “Seven Types of Waste” were originally identified by: A) W. Edwards Deming B) Taiichi Ohno C) Henry Ford D) Joseph Juran Answer: B Explanation: Taiichi Ohno, the architect of the Toyota Production System, defined the seven wastes.
Question 53. Which of the following best describes “Mura” in a production schedule? A) Consistently meeting takt time every hour B) Large fluctuations in daily production volumes C) Operating all machines at 100 % capacity D) Having a perfectly balanced workload across all workstations Answer: B Explanation: Mura is unevenness; erratic production creates peaks and valleys. Question 54. The “5 Whys” technique is most effective when: A) The team stops after the first “why.” B) The root cause is obvious and does not need further probing. C) Each “why” leads to a deeper level of analysis until the fundamental cause is uncovered. D) The analysis is performed by a single individual without group input. Answer: C Explanation: Repeatedly asking “why” drives deeper insight into the underlying problem. Question 55. In TPM, “Autonomous Maintenance” primarily involves: A) External contractors performing all repairs B) Operators performing routine cleaning, inspection, and minor maintenance tasks C) Replacing all mechanical components annually D) Eliminating all scheduled maintenance activities Answer: B Explanation: Autonomous maintenance empowers operators to keep equipment in good condition, preventing breakdowns.
Question 56. Which of the following is a direct result of implementing a “One‑Piece Flow” line? A) Increased batch size to improve machine utilization B) Reduced lead time and work‑in‑process inventory C. Higher levels of motion waste due to frequent handoffs D. Need for larger storage areas between stations Answer: B Explanation: One‑piece flow minimizes WIP and shortens the time from start to finish. Question 57. The “Seven Wastes” model does NOT address which of the following systemic issues? A) Overproduction B) Variation in demand C) Defects D) Motion Answer: B Explanation: Variation in demand (Mura) is a systemic issue but not listed among the original seven wastes. Question 58. A “Standard Work Combination Table” is used to: A) Track employee attendance B) Document the sequence, takt time, and inventory between workstations C. Calculate the cost of raw materials D. Schedule machine maintenance Answer: B Explanation: The combination table shows work sequence, timing, and inventory levels for a balanced line.
