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Lean Operations – Principles of lean management, lean tools and techniques

  1. What is the primary goal of lean operations?
    a) To create greater customer value using fewer resources
    b) To maximize inventory at every stage
    c) To increase the number of process steps
    d) To keep all equipment operating regardless of demand
    Answer: a) To create greater customer value using fewer resources
  2. Lean management defines value mainly from the perspective of:
    a) Senior managers
    b) The customer
    c) Equipment suppliers
    d) Government regulators
    Answer: b) The customer
  3. Which activity is considered value-added?
    a) Waiting for approval
    b) Correcting a defect
    c) Transforming an offering in a way the customer values
    d) Moving material unnecessarily
    Answer: c) Transforming an offering in a way the customer values
  4. Which activity is normally considered non-value-added?
    a) Assembling a required component
    b) Providing requested customer support
    c) Processing a valid customer order
    d) Reworking a defective product
    Answer: d) Reworking a defective product
  5. Lean thinking begins by identifying:
    a) What customers value
    b) How to increase batch sizes
    c) How to add more inspections
    d) Which workers to remove
    Answer: a) What customers value
  6. What is a value stream?
    a) A financial report of product revenue
    b) All activities required to create and deliver an offering
    c) A list of customer complaints
    d) The physical movement of cash
    Answer: b) All activities required to create and deliver an offering
  7. The lean principle of flow seeks to:
    a) Increase waiting between activities
    b) Separate related process steps
    c) Move work smoothly through the process
    d) Produce only in large batches
    Answer: c) Move work smoothly through the process
  8. A pull system authorizes production based on:
    a) Annual financial targets
    b) Available warehouse space
    c) Maximum machine capacity
    d) Actual downstream demand
    Answer: d) Actual downstream demand
  9. The pursuit of perfection in lean management means:
    a) Continuously improving processes and reducing waste
    b) Waiting until a process is completely broken
    c) Eliminating all performance measures
    d) Accepting current methods permanently
    Answer: a) Continuously improving processes and reducing waste
  10. Which statement best describes lean management?
    a) It is mainly a cost-cutting exercise
    b) It is a management system focused on value, flow and continuous improvement
    c) It applies only to automobile manufacturing
    d) It requires large inventories
    Answer: b) It is a management system focused on value, flow and continuous improvement
  11. Why is respect for people important in lean operations?
    a) Employees should not question established methods
    b) Improvement should be handled only by executives
    c) Employees closest to the work often understand process problems best
    d) Lean requires fewer employee ideas
    Answer: c) Employees closest to the work often understand process problems best
  12. Which result is most consistent with successful lean implementation?
    a) Longer lead times
    b) More work-in-process
    c) Greater process complexity
    d) Better quality, lower waste and faster flow
    Answer: d) Better quality, lower waste and faster flow
  13. Lean systems attempt to make problems:
    a) Visible so their causes can be addressed
    b) Hidden from customers and employees
    c) Someone else’s responsibility
    d) Less important than production volume
    Answer: a) Visible so their causes can be addressed
  14. Which management behavior best supports lean thinking?
    a) Blaming employees when defects occur
    b) Investigating the process and root cause of problems
    c) Increasing inventory to hide delays
    d) Ignoring small process failures
    Answer: b) Investigating the process and root cause of problems
  15. Lean operations usually favor:
    a) Large batches and long queues
    b) High inventory and complex routing
    c) Small batches and smooth process flow
    d) Production without customer demand
    Answer: c) Small batches and smooth process flow
  16. What does operational stability provide in a lean system?
    a) More process variation
    b) Less understanding of work methods
    c) Greater dependence on emergency action
    d) A reliable foundation for continuous improvement
    Answer: d) A reliable foundation for continuous improvement
  17. Which practice helps create stable operations?
    a) Standardized work
    b) Unplanned process changes
    c) Large safety stocks
    d) Informal work methods
    Answer: a) Standardized work
  18. Lean improvement should focus first on:
    a) Purchasing expensive technology
    b) Removing causes of waste and poor flow
    c) Increasing finished-goods inventory
    d) Adding more approval layers
    Answer: b) Removing causes of waste and poor flow
  19. Which statement best reflects customer value?
    a) Any activity that costs money adds value
    b) Any activity performed by an employee adds value
    c) Value exists when an offering provides benefits customers need
    d) Value is determined only by production volume
    Answer: c) Value exists when an offering provides benefits customers need
  20. Lean operations should be viewed as:
    a) A temporary improvement project
    b) A quality inspection program
    c) A system for reducing labor only
    d) A long-term operating philosophy
    Answer: d) A long-term operating philosophy

  1. Which waste occurs when more is produced than customers currently need?
    a) Overproduction
    b) Motion
    c) Defects
    d) Waiting
    Answer: a) Overproduction
  2. Which waste occurs when employees or products remain idle before the next activity?
    a) Inventory
    b) Waiting
    c) Transportation
    d) Overprocessing
    Answer: b) Waiting
  3. Moving materials farther than necessary is an example of:
    a) Motion
    b) Inventory
    c) Transportation waste
    d) Underused talent
    Answer: c) Transportation waste
  4. Holding more raw materials or work-in-process than required creates:
    a) Overprocessing
    b) Motion
    c) Waiting
    d) Inventory waste
    Answer: d) Inventory waste
  5. Unnecessary walking, reaching or bending by employees is classified as:
    a) Motion waste
    b) Transportation waste
    c) Overproduction
    d) Defect waste
    Answer: a) Motion waste
  6. Performing more work than the customer requires is called:
    a) Waiting
    b) Overprocessing
    c) Underused talent
    d) Inventory
    Answer: b) Overprocessing
  7. Errors that require repair, correction or replacement are examples of:
    a) Excess motion
    b) Overproduction
    c) Defects
    d) Transportation
    Answer: c) Defects
  8. Failing to use employees’ skills, ideas and knowledge is known as:
    a) Waiting
    b) Inventory
    c) Overprocessing
    d) Underused talent
    Answer: d) Underused talent
  9. Which waste often hides quality and flow problems?
    a) Excess inventory
    b) Employee training
    c) Preventive maintenance
    d) Standardized work
    Answer: a) Excess inventory
  10. Producing reports that nobody uses is an example of:
    a) Transportation
    b) Overprocessing
    c) Motion
    d) Waiting
    Answer: b) Overprocessing
  11. A worker repeatedly searching for tools is experiencing:
    a) Defect waste
    b) Inventory waste
    c) Motion waste
    d) Overproduction
    Answer: c) Motion waste
  12. Sending a form through several unnecessary approvals creates:
    a) Customer value
    b) Process flow
    c) Pull production
    d) Overprocessing and waiting
    Answer: d) Overprocessing and waiting
  13. Why is overproduction often considered a serious waste?
    a) It can create inventory and hide other problems
    b) It always improves customer service
    c) It reduces storage requirements
    d) It eliminates process delays
    Answer: a) It can create inventory and hide other problems
  14. A long queue of customers is primarily an example of:
    a) Transportation
    b) Waiting
    c) Overproduction
    d) Motion
    Answer: b) Waiting
  15. Moving patients repeatedly between distant hospital departments creates:
    a) Defect waste
    b) Underused talent
    c) Transportation waste
    d) Overproduction
    Answer: c) Transportation waste
  16. Entering the same customer data into several systems is an example of:
    a) Inventory
    b) Motion only
    c) Pull production
    d) Overprocessing
    Answer: d) Overprocessing
  17. Which action best reduces defect waste?
    a) Preventing errors at their source
    b) Increasing final inspection only
    c) Building more safety stock
    d) Producing larger batches
    Answer: a) Preventing errors at their source
  18. Which approach best reduces underused employee talent?
    a) Restricting improvement ideas to managers
    b) Involving employees in problem-solving
    c) Reducing employee training
    d) Preventing cross-functional teamwork
    Answer: b) Involving employees in problem-solving
  19. Why should waste be evaluated across the entire value stream?
    a) Waste exists only in production
    b) Every department creates the same waste
    c) Improving one step may shift waste elsewhere
    d) Customers do not influence process waste
    Answer: c) Improving one step may shift waste elsewhere
  20. Which action is least consistent with waste reduction?
    a) Reducing unnecessary movement
    b) Simplifying process steps
    c) Preventing defects
    d) Increasing batch sizes without considering demand
    Answer: d) Increasing batch sizes without considering demand

  1. Continuous flow means that work:
    a) Moves through process steps with minimal interruption
    b) Is held between every activity
    c) Is always produced in large batches
    d) Bypasses customer requirements
    Answer: a) Moves through process steps with minimal interruption
  2. Which condition most supports continuous flow?
    a) Large distances between related activities
    b) Balanced and closely connected process steps
    c) Long setup times
    d) Unreliable equipment
    Answer: b) Balanced and closely connected process steps
  3. One-piece flow means:
    a) Producing one product model forever
    b) Operating only one machine
    c) Moving individual units through the process rather than large batches
    d) Serving only one customer
    Answer: c) Moving individual units through the process rather than large batches
  4. Which is a likely benefit of one-piece flow?
    a) More work-in-process
    b) Longer defect-detection time
    c) More storage requirements
    d) Faster feedback and shorter lead time
    Answer: d) Faster feedback and shorter lead time
  5. What is a pull production system?
    a) A system in which downstream demand triggers upstream work
    b) A system based only on sales forecasts
    c) A system that maximizes equipment use
    d) A system that produces without customer orders
    Answer: a) A system in which downstream demand triggers upstream work
  6. A push system normally releases work based on:
    a) Actual consumption only
    b) Forecasts or planned schedules
    c) Empty kanban containers only
    d) Customer pickup signals only
    Answer: b) Forecasts or planned schedules
  7. Just-in-time operations aim to provide:
    a) The largest possible inventory
    b) Every product before demand exists
    c) The right item, in the right amount, at the right time
    d) High capacity regardless of demand
    Answer: c) The right item, in the right amount, at the right time
  8. Which condition is essential for effective just-in-time operations?
    a) Frequent defects
    b) Unstable schedules
    c) Unreliable suppliers
    d) Consistent quality and dependable processes
    Answer: d) Consistent quality and dependable processes
  9. Smaller lot sizes can help reduce:
    a) Inventory and lead time
    b) Employee knowledge
    c) Product quality
    d) Process visibility
    Answer: a) Inventory and lead time
  10. What is a major challenge of small-lot production?
    a) It always requires more inventory
    b) Frequent changeovers may consume time
    c) Defects become harder to identify
    d) It prevents product variety
    Answer: b) Frequent changeovers may consume time
  11. Level scheduling seeks to:
    a) Maximize demand variation
    b) Change production plans every hour
    c) smooth the mix and volume of production
    d) Build large seasonal inventories
    Answer: c) Smooth the mix and volume of production
  12. Heijunka is associated with:
    a) Root-cause analysis
    b) Equipment maintenance
    c) Workplace organization
    d) Production leveling
    Answer: d) Production leveling
  13. Takt time represents:
    a) The production pace required to meet customer demand
    b) The total time a machine is available
    c) The longest task in a process
    d) The time required to repair defects
    Answer: a) The production pace required to meet customer demand
  14. Takt time is commonly calculated as:
    a) Customer demand divided by available time
    b) Available production time divided by customer demand
    c) Total task time divided by employee count
    d) Inventory divided by cycle time
    Answer: b) Available production time divided by customer demand
  15. If 420 minutes are available and customer demand is 105 units, takt time is:
    a) 2 minutes per unit
    b) 3 minutes per unit
    c) 4 minutes per unit
    d) 5 minutes per unit
    Answer: c) 4 minutes per unit
  16. If process cycle time exceeds takt time, the process will probably:
    a) Produce faster than customer demand
    b) Create excess capacity
    c) Build finished-goods inventory
    d) Fail to meet demand
    Answer: d) Fail to meet demand
  17. Which action can improve flow at a bottleneck?
    a) Increase the bottleneck’s effective capacity
    b) Add more work before the bottleneck
    c) Ignore downtime
    d) Produce larger upstream batches
    Answer: a) Increase the bottleneck’s effective capacity
  18. A balanced lean process attempts to align:
    a) Financial results and advertising
    b) Cycle times with customer demand
    c) Inventory with warehouse capacity
    d) Employee count with management levels
    Answer: b) Cycle times with customer demand
  19. Why are reliable suppliers important in lean operations?
    a) Lean systems depend on very large safety stocks
    b) Supplier performance is unrelated to flow
    c) Frequent, timely deliveries reduce the need for excess inventory
    d) Lean companies avoid supplier partnerships
    Answer: c) Frequent, timely deliveries reduce the need for excess inventory
  20. Which supplier relationship best supports lean operations?
    a) Short-term price competition only
    b) Unpredictable delivery schedules
    c) Limited information sharing
    d) Long-term cooperation focused on quality and reliability
    Answer: d) Long-term cooperation focused on quality and reliability

  1. What is the purpose of 5S?
    a) To create an organized, clean and disciplined workplace
    b) To increase finished-goods inventory
    c) To replace employee training
    d) To produce larger batches
    Answer: a) To create an organized, clean and disciplined workplace
  2. In 5S, “Sort” means:
    a) Cleaning all equipment
    b) Removing unnecessary items from the workplace
    c) Creating performance reports
    d) Establishing takt time
    Answer: b) Removing unnecessary items from the workplace
  3. In 5S, “Set in order” focuses on:
    a) Inspecting finished products
    b) Reducing customer demand
    c) Arranging needed items so they are easy to find and use
    d) Assigning employee salaries
    Answer: c) Arranging needed items so they are easy to find and use
  4. In 5S, “Shine” means:
    a) Increasing production speed
    b) Improving product packaging
    c) Rewarding high-performing employees
    d) Cleaning and inspecting the workplace
    Answer: d) Cleaning and inspecting the workplace
  5. In 5S, “Standardize” means:
    a) Creating consistent methods to maintain the first three practices
    b) Eliminating all work instructions
    c) Allowing every employee to organize differently
    d) Increasing process variation
    Answer: a) Creating consistent methods to maintain the first three practices
  6. In 5S, “Sustain” requires:
    a) A one-time cleanup event
    b) Discipline and ongoing adherence to agreed practices
    c) Removal of performance checks
    d) Less employee involvement
    Answer: b) Discipline and ongoing adherence to agreed practices
  7. Kanban is primarily used to:
    a) Calculate product cost
    b) Design facility layouts
    c) Signal the need to produce or move material
    d) Evaluate employee performance
    Answer: c) Signal the need to produce or move material
  8. A kanban card, bin or electronic signal usually authorizes:
    a) Maximum production regardless of demand
    b) Annual purchasing decisions
    c) Employee overtime
    d) Replenishment based on consumption
    Answer: d) Replenishment based on consumption
  9. What is poka-yoke?
    a) A method for preventing or immediately detecting mistakes
    b) A system for increasing batch sizes
    c) A financial performance measure
    d) A supplier-selection process
    Answer: a) A method for preventing or immediately detecting mistakes
  10. Which is an example of poka-yoke?
    a) Producing more units than ordered
    b) Designing a connector so it fits only in the correct direction
    c) Increasing final inspection staff
    d) Storing excess components
    Answer: b) Designing a connector so it fits only in the correct direction
  11. Visual management uses signs, colors and displays to:
    a) Hide process conditions
    b) Replace all employee communication
    c) Make performance and abnormalities easy to understand
    d) Increase process complexity
    Answer: c) Make performance and abnormalities easy to understand
  12. An andon system is used to:
    a) Calculate takt time
    b) Design product specifications
    c) Schedule suppliers
    d) Signal a process problem or request assistance
    Answer: d) Signal a process problem or request assistance
  13. Jidoka refers to:
    a) Building quality into the process and stopping when abnormalities occur
    b) Producing continuously despite defects
    c) Inspecting quality only at the end
    d) Maximizing machine utilization
    Answer: a) Building quality into the process and stopping when abnormalities occur
  14. What is the purpose of a value-stream map?
    a) To display only financial information
    b) To show material and information flow across a process
    c) To record employee attendance
    d) To calculate depreciation
    Answer: b) To show material and information flow across a process
  15. A current-state value-stream map shows:
    a) The ideal future process only
    b) Customer preferences only
    c) How the process currently operates
    d) The organization’s financial strategy
    Answer: c) How the process currently operates
  16. A future-state value-stream map describes:
    a) Past financial performance
    b) Current employee assignments
    c) Competitors’ processes
    d) A redesigned process with improved flow and less waste
    Answer: d) A redesigned process with improved flow and less waste
  17. Standardized work defines:
    a) The best current method, sequence and timing for completing a task
    b) A permanent process that cannot be improved
    c) Different methods for every worker
    d) Production volume without customer demand
    Answer: a) The best current method, sequence and timing for completing a task
  18. Why is standardized work important for continuous improvement?
    a) Improvement is impossible when employees are involved
    b) A stable baseline makes changes easier to evaluate
    c) Standards eliminate the need for learning
    d) Standard work prevents innovation
    Answer: b) A stable baseline makes changes easier to evaluate
  19. SMED is a method used to:
    a) Increase inventory levels
    b) Reduce employee training
    c) Reduce equipment setup and changeover time
    d) Calculate quality costs
    Answer: c) Reduce equipment setup and changeover time
  20. Reducing changeover time allows a company to:
    a) Produce only one product
    b) Increase batch size permanently
    c) Eliminate process flexibility
    d) Economically produce smaller batches
    Answer: d) Economically produce smaller batches

  1. Kaizen means:
    a) Continuous, incremental improvement
    b) Large-scale automation only
    c) Final product inspection
    d) Employee specialization
    Answer: a) Continuous, incremental improvement
  2. A kaizen event is:
    a) A yearly financial review
    b) A focused, short-term improvement activity
    c) A large inventory purchase
    d) A marketing campaign
    Answer: b) A focused, short-term improvement activity
  3. The Plan-Do-Check-Act cycle is used to:
    a) Increase approval levels
    b) Replace standard work
    c) Test and sustain process improvements
    d) Maximize batch sizes
    Answer: c) Test and sustain process improvements
  4. During the “Plan” stage of PDCA, teams should:
    a) Standardize the solution immediately
    b) Ignore current performance
    c) Purchase new technology
    d) Define the problem and develop a proposed improvement
    Answer: d) Define the problem and develop a proposed improvement
  5. During the “Do” stage of PDCA, teams:
    a) Test the proposed change on a suitable scale
    b) abandon the improvement
    c) create the annual budget
    d) increase inventory
    Answer: a) Test the proposed change on a suitable scale
  6. During the “Check” stage of PDCA, teams:
    a) Assign blame for poor results
    b) compare actual results with expected results
    c) implement changes without measurement
    d) stop collecting data
    Answer: b) Compare actual results with expected results
  7. During the “Act” stage of PDCA, a successful improvement should be:
    a) Hidden from other teams
    b) Reversed immediately
    c) Standardized and expanded where appropriate
    d) Left undocumented
    Answer: c) Standardized and expanded where appropriate
  8. The five whys technique is used to:
    a) Set product prices
    b) Calculate takt time
    c) Measure employee satisfaction
    d) Explore the root cause of a problem
    Answer: d) Explore the root cause of a problem
  9. Root-cause analysis focuses on:
    a) Correcting the underlying cause rather than only the symptom
    b) Increasing final inspection
    c) Blaming the employee closest to the problem
    d) Building more safety stock
    Answer: a) Correcting the underlying cause rather than only the symptom
  10. A fishbone diagram helps teams:
    a) Schedule production
    b) Organize possible causes of a problem into categories
    c) calculate inventory turnover
    d) design a kanban card
    Answer: b) Organize possible causes of a problem into categories
  11. Gemba refers to:
    a) The annual planning meeting
    b) A statistical model
    c) The actual place where value-creating work occurs
    d) The finished-goods warehouse only
    Answer: c) The actual place where value-creating work occurs
  12. A gemba walk involves leaders:
    a) Reviewing only written reports
    b) Observing competitors
    c) Auditing financial statements
    d) Going to the workplace to observe and understand the process
    Answer: d) Going to the workplace to observe and understand the process
  13. Which leadership behavior best supports a lean culture?
    a) Asking employees questions and supporting problem-solving
    b) Providing solutions without observing the process
    c) Rewarding production even when quality falls
    d) Hiding performance information
    Answer: a) Asking employees questions and supporting problem-solving
  14. Why is employee involvement essential to lean management?
    a) Lean improvement requires no operational knowledge
    b) Employees can identify and solve problems within daily work
    c) Only consultants understand waste
    d) Managers should make all improvements alone
    Answer: b) Employees can identify and solve problems within daily work
  15. Which performance measure is most aligned with lean flow?
    a) Number of machines purchased
    b) Total warehouse space
    c) Order lead time
    d) Number of managers
    Answer: c) Order lead time
  16. Which measure can reveal excess work-in-process?
    a) Customer satisfaction score
    b) Employee turnover rate
    c) Advertising spending
    d) Inventory level between process steps
    Answer: d) Inventory level between process steps
  17. What is a major risk of treating lean only as a cost-reduction program?
    a) Leaders may damage quality, employee trust and long-term improvement
    b) Customer value will automatically increase
    c) Waste will always disappear
    d) Employee engagement will improve
    Answer: a) Leaders may damage quality, employee trust and long-term improvement
  18. Why do some lean transformations fail?
    a) Lean requires no leadership support
    b) Tools are applied without changing management behavior and culture
    c) Continuous improvement is too simple
    d) Employees are given too much process information
    Answer: b) Tools are applied without changing management behavior and culture
  19. Which approach is most likely to sustain lean improvements?
    a) Conducting one improvement event and stopping
    b) Depending entirely on outside consultants
    c) Embedding standards, measurement and daily problem-solving
    d) Removing employee ownership
    Answer: c) Embedding standards, measurement and daily problem-solving
  20. Which statement best summarizes lean operations?
    a) Lean focuses mainly on reducing labor
    b) Lean requires maximizing equipment utilization
    c) Lean is effective only in manufacturing
    d) Lean creates customer value by improving flow, removing waste and engaging people
    Answer: d) Lean creates customer value by improving flow, removing waste and engaging people
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