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 of the following is NOT one of the five principles of lean thinking as defined by Womack and Jones?
Answer: Eliminate defects at the source
The five lean principles are: identify value, map the value stream, create flow, establish pull, and pursue perfection—defect elimination at source is a lean tool, not one of the five principles.
A team performing a rapid improvement event (kaizen blitz) wants to reduce changeover time on a machine. Which lean tool is most directly applicable?
Answer: Single-minute exchange of die (SMED)
SMED is the lean methodology specifically designed to reduce setup and changeover time by converting internal setup steps to external steps.
In SMED methodology, 'internal' setup activities are best described as:
Answer: Tasks that can only be performed while the machine is stopped
Internal setup activities require the machine to be stopped, so converting them to external activities (done while running) is the primary SMED improvement strategy.
The concept of 'one-piece flow' (single-piece flow) directly addresses which lean waste?
Answer: Excess inventory and waiting between process steps
One-piece flow eliminates WIP inventory batches and the waiting associated with batch-and-queue processing, exposing quality problems immediately.
A poka-yoke device that stops a process when an error is detected is classified as a:
Answer: Control (shutdown) poka-yoke
A control (or shutdown) poka-yoke automatically stops the process when a defect or error condition is detected, preventing defective output.
In total productive maintenance (TPM), which pillar focuses specifically on preventing equipment deterioration through routine operator care activities?
Answer: Autonomous maintenance
Autonomous maintenance transfers routine tasks (cleaning, lubrication, inspection) to operators, enabling them to detect abnormalities early and prevent breakdowns.
Overall equipment effectiveness (OEE) is calculated as:
Answer: Availability × Performance × Quality
OEE = Availability × Performance × Quality rate, providing a single metric that captures three major categories of equipment loss.