ArulmiguMeenakshi Amman College of Engineering
Vadamavandal-604410.
Important questions and answers
CME347- LEAN MANUFACTURING
Prepared by
V.Umapathy,
Prof. /Mech.
S.No. Questions and answers
Unit-I
BASICS OF 6 SIGMA
2 – marks question and answers
1. What does lean manufacturing mean?
Lean manufacturing is a methodology that focuses on minimizing waste within manufacturing systems
while simultaneously maximizing productivity. Waste is seen as anything that customers do not believe
adds value and is not willing to pay for.
2. What are the 5 principles of lean manufacturing?
Value. Determine the value expected and desired by the customer through meaningful interaction and
develop a strategy to bring the relationship between value and price closer. ...
Value stream.
Flow.
Pull.
Perfection.
3. What is the 6 sigma concept?
Six Sigma is a data-driven methodology for improving processes by minimizing defects and variations. It
, aims to achieve near-perfect quality, targeting 3.4 defects per million opportunities. The core concept
involves a structured approach, often using DMAIC (Define, Measure, Analyze, Improve, Control) for
existing processes or DFSS/DMADV (Define, Measure, Analyze, Design, Verify) for new processes.
4. Which tool is often used in Six Sigma for problem-solving?
This allows Six Sigma teams, through the display of differences between data groups, to identify the most
critical issues. This toolkit is the most important in Six Sigma because it allows the team to identify 20% of
the resources that cause 80% of the problems in their processes.
5. What is 6 sigma standard deviation?
Short Summary. Standard deviation is an essential measure of process variation used in Six Sigma
methodology. It allows practitioners to analyze data, identify sources of variation and implement targeted
enhancements for improved customer satisfaction and business performance
6. What does standard deviation explain?
A standard deviation (or σ) is a measure of how dispersed the data is in relation to the mean. Low, or
small, standard deviation indicates data are clustered tightly around the mean, and high, or large, standard
deviation indicates data are more spread out.
7. What is the normal distribution in Six Sigma?
The normal distribution, also known as the Six Sigma bell curve or Gaussian distribution, is a fundamental
concept in Six Sigma. It describes how process metrics like cycle times, temperatures, pressures,
concentrations, etc. are distributed in a stable process.
8. What are the various levels in Six Sigma?
At the project level, there are master black belts, black belts, green belts, yellow belts, and white belts.
These people conduct projects and implement improvements. Master Black Belt: Trains and coaches Black
Belts and Green Belts.
,9. What is the value of enterprise?
Enterprise value calculates the potential cost to acquire a business based on the company's capital structure.
To calculate enterprise value, take current shareholder price — for a public company, that's market
capitalization. Add outstanding debt and then subtract available cash.
10. What is variation in Six Sigma?
Edwards Deming. However, process inconsistency plagues even the most well-oiled organizations. In Six
Sigma methodology, this inconsistency is referred to as 'variation. ' Variation encompasses any deviations
from a desired process output, impacting quality, quantity, timing, or any other measurable metric.
13 and 15 marks question and answers
11. Explain Basic tools of six sigma like problem solving approach.
, Six Sigma utilizes a structured problem-solving approach called DMAIC, an acronym for Define, Measure,
Analyze, Improve, and Control. This framework, combined with various tools, helps identify, analyze, and
resolve process issues. Key tools include Pareto charts, histograms, cause-and-effect diagrams, and FMEA
(Failure Mode and Effects Analysis).
DMAIC Phases and Associated Tools:
Define:
This phase focuses on clearly defining the problem, project goals, and scope. Tools like Project
Vadamavandal-604410.
Important questions and answers
CME347- LEAN MANUFACTURING
Prepared by
V.Umapathy,
Prof. /Mech.
S.No. Questions and answers
Unit-I
BASICS OF 6 SIGMA
2 – marks question and answers
1. What does lean manufacturing mean?
Lean manufacturing is a methodology that focuses on minimizing waste within manufacturing systems
while simultaneously maximizing productivity. Waste is seen as anything that customers do not believe
adds value and is not willing to pay for.
2. What are the 5 principles of lean manufacturing?
Value. Determine the value expected and desired by the customer through meaningful interaction and
develop a strategy to bring the relationship between value and price closer. ...
Value stream.
Flow.
Pull.
Perfection.
3. What is the 6 sigma concept?
Six Sigma is a data-driven methodology for improving processes by minimizing defects and variations. It
, aims to achieve near-perfect quality, targeting 3.4 defects per million opportunities. The core concept
involves a structured approach, often using DMAIC (Define, Measure, Analyze, Improve, Control) for
existing processes or DFSS/DMADV (Define, Measure, Analyze, Design, Verify) for new processes.
4. Which tool is often used in Six Sigma for problem-solving?
This allows Six Sigma teams, through the display of differences between data groups, to identify the most
critical issues. This toolkit is the most important in Six Sigma because it allows the team to identify 20% of
the resources that cause 80% of the problems in their processes.
5. What is 6 sigma standard deviation?
Short Summary. Standard deviation is an essential measure of process variation used in Six Sigma
methodology. It allows practitioners to analyze data, identify sources of variation and implement targeted
enhancements for improved customer satisfaction and business performance
6. What does standard deviation explain?
A standard deviation (or σ) is a measure of how dispersed the data is in relation to the mean. Low, or
small, standard deviation indicates data are clustered tightly around the mean, and high, or large, standard
deviation indicates data are more spread out.
7. What is the normal distribution in Six Sigma?
The normal distribution, also known as the Six Sigma bell curve or Gaussian distribution, is a fundamental
concept in Six Sigma. It describes how process metrics like cycle times, temperatures, pressures,
concentrations, etc. are distributed in a stable process.
8. What are the various levels in Six Sigma?
At the project level, there are master black belts, black belts, green belts, yellow belts, and white belts.
These people conduct projects and implement improvements. Master Black Belt: Trains and coaches Black
Belts and Green Belts.
,9. What is the value of enterprise?
Enterprise value calculates the potential cost to acquire a business based on the company's capital structure.
To calculate enterprise value, take current shareholder price — for a public company, that's market
capitalization. Add outstanding debt and then subtract available cash.
10. What is variation in Six Sigma?
Edwards Deming. However, process inconsistency plagues even the most well-oiled organizations. In Six
Sigma methodology, this inconsistency is referred to as 'variation. ' Variation encompasses any deviations
from a desired process output, impacting quality, quantity, timing, or any other measurable metric.
13 and 15 marks question and answers
11. Explain Basic tools of six sigma like problem solving approach.
, Six Sigma utilizes a structured problem-solving approach called DMAIC, an acronym for Define, Measure,
Analyze, Improve, and Control. This framework, combined with various tools, helps identify, analyze, and
resolve process issues. Key tools include Pareto charts, histograms, cause-and-effect diagrams, and FMEA
(Failure Mode and Effects Analysis).
DMAIC Phases and Associated Tools:
Define:
This phase focuses on clearly defining the problem, project goals, and scope. Tools like Project
