Lean Concepts and Waste Flashcards
7 cards from real Lean Six Sigma Yellow Belt Certification 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 Concepts and Waste flashcards as text
What does 'Muri' mean in the context of the three types of waste in Lean?
Answer: Overburden on people or machines
Muri refers to overburden — pushing workers or equipment beyond their natural capacity, leading to breakdowns and errors.
Which waste category does rework of defective products fall into?
Answer: Both defects and extra processing
Rework represents defects (the item failed) and extra processing (additional work to correct the failure), capturing both waste types.
A Lean practitioner performs a 'Gemba walk.' What is the primary purpose of this activity?
Answer: To go to the actual workplace and observe real processes to identify waste
A Gemba walk involves going to where work is done to observe processes firsthand and identify waste, problems, and improvement opportunities.
Takt time is calculated as which of the following?
Answer: Available production time divided by customer demand rate
Takt time = available production time / customer demand, setting the pace at which products must be completed to meet demand.
Which of the following best describes a 'value-added' activity in Lean?
Answer: An activity that transforms the product in a way the customer values and is willing to pay for
A value-added activity physically transforms the product or service in a way the customer recognizes and would pay for.
An inspection step at the end of a production line that catches defects is considered which type of activity?
Answer: Business-value-added (necessary non-value-added)
Inspection is a necessary non-value-added activity — it doesn't transform the product but may be required to ensure quality until root causes are eliminated.
In a Lean office environment, which of the following would be classified as a 'defect' waste?
Answer: An invoice sent with incorrect billing information requiring correction
An incorrect invoice is a defect in a service process — it requires rework, delays payment, and damages customer trust.