1. True or false? Lean focuses on reducing the number of defects in a process un
ID: 430511 • Letter: 1
Question
1. True or false? Lean focuses on reducing the number of defects in a process until they approach statistical insignificance.
_____True
_____False
2. Which of the following is a type of waste?
a) Waiting
b) Defects
c) Poor sustainability practices
d) a and b
3. Which of the following is not a lean principle?
a) Reduce the number of defects to a target level.
b) Create value flow.
c) Continually remove successive layers of waste.
d) Identify all steps across a value stream.
4. "Heijunka" is the Japanese term relating to which type of continuous improvement activity?
a) TQM
b) Lean/JIT
c) Six sigma
d) TOC
5. True or false? Takt time is a measure of available product time over customer demand.
____True
____False
6. Fill in the blank. When a process measurably fails to meet customer requirements by producing more than _____defects per million, six sigma offers a set of tools for developing solutions.
a) 3.14
b) 4.3
c) 3.4
d) 3.49
Explanation / Answer
Answer to question 1 :
Lean management is an approach to running an organization that supports the concept of continuous improvement, a long-term approach to work that systematically seeks to achieve small, incremental changes in processes in order to improve efficiency and quality.
Thus continuously reducing defects in a process until they become small enough to be statistically insignificant is part of Continuous improvement and hence will be considered as Lean Management.
Therefore correct answer would be “TRUE”
ANSWER :TRUE
Answer to question 2 :
“Waiting” in a manufacturing process increases unnecessary cost of manufacturing process due to higher work in progress.
“Defects” requires rejection or rework of a product which also increases cost of manufacturing of the product and hence also is a type of waste.
Therefore , correct answer would be “ d) a and b”
ANSWER : d ) a and b
Answer to question 3 :
All of the following are part of the Lean Management Principle :
Therefore , following is not part of Lean Management principle “ d) Identify all steps across a value stream”
ANSWER : d) identify all steps across a value stream
Answer to question 4 :
Heijunka (hi-JUNE-kuh) is a Japanese word for leveling. It is part of the lean methodology of process improvement that helps organizations match unpredictable customer demand patterns and eliminate manufacturing waste by leveling the type and quantity of production output over a fixed period of time.
Therefore , correct answer is “ b) Lean / JIT”
ANSWER : b ) Lean / JIT
Answer to question 5 :
Takt time can be formulated as :
Takt time = Available time in a certain period / Demand during corresponding period
Therefore , correct answer would be “ TRUE”
ANSWER : TRUE
Answer to question 6 :
The objective of Six Sigma quality is to reduce process output variation so that on a long term basis, which is the customer's aggregate experience with our process over time, this will result in no more than 3.4 defect parts per million (PPM) opportunities (or 3.4 defects per million opportunities – DPMO).
ANSWER : C) 3.4
ANSWER :TRUE
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