Lean Enterprise Concepts Flashcards
7 cards from real Certified Six Sigma Black Belt Exam practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Lean Enterprise Concepts flashcards as text
Which lean metric measures the percentage of total lead time that a product is actually being worked on (value-added time)?
Answer: Process cycle efficiency (PCE)
Process cycle efficiency = value-added time ÷ total lead time, and lean targets PCE above 25% for most processes.
In a lean pull system, a 'signal' card used to authorize replenishment of a consumed batch from a supermarket is called a:
Answer: Withdrawal kanban
A withdrawal (move) kanban authorizes moving a container of parts from the supermarket to the consuming process.
A facility uses 5S. After the 'Set in Order' step, what is the primary purpose of the 'Shine' step?
Answer: Clean the area and use cleaning as inspection to detect abnormalities
Shine (Seiso) involves thorough cleaning and treats cleaning as an inspection opportunity to uncover equipment or process abnormalities.
Which of the following best describes 'heijunka' in lean production?
Answer: Leveling the production schedule by mix and volume over time
Heijunka (production leveling) smooths the production schedule across a planning period to reduce variability in demand placed on upstream processes.
An operator at a workstation stops production and calls for help the moment a defect is detected. This lean concept is known as:
Answer: Jidoka
Jidoka (autonomation) gives machines and operators the authority to stop production when an abnormality is detected, preventing defect propagation.
Which waste category in the 8 wastes of lean (TIM WOODS) specifically refers to producing more than the next process or customer needs right now?
Answer: Overproduction
Overproduction is considered the worst lean waste because it generates and hides all other wastes downstream.
When creating a value stream map, the 'push' arrow symbol indicates that:
Answer: Material is moved to the next process regardless of downstream need
A push arrow on a VSM shows material being pushed forward based on schedules or forecasts rather than actual downstream demand.