Deck 37: Quality Control and Inspection

Question 1

Which of the following quality aspects would be classified as examples of freedom from deficiencies rather than product features (two correct answers):

A)components within tolerance
B)location of ON/OFF switch
C)no missing parts
D)product weight
E)reliability
F)reputation of the company

Answer 1

components within tolerance
no missing parts

Question 2

When a design tolerance is set equal to the natural tolerance limits for the process making the part, it means that the tolerance is equal to the process capability for the process:

Answer 2

True

Question 3

If the product tolerance is set so that the process capability index = 1.0, then the percentage of parts that are within tolerance will be closest to which one of the following when the process is operating in statistical control:

A)35%
B)65%
C)95%
D)99%
E)100%

Answer 3

100%

Question 4

In an $\bar{x}$ control chart, the upper control limit is set equal to which one of the following:

A)process mean
B)process mean plus three standard deviations
C)upper design tolerance limit
D)upper value of the maximum range R?

Question 5

The R chart is used for which one of the following product or part characteristics:

A)number of rejects in the sample
B)number of reworked parts in a sample
C)radius of a cylindrical part
D)range of sample values

Question 6

Which one of the following best describes the situations for which the c chart is most suited:

A)control of defective parts
B)mean value of part characteristic of interest
C)number of defects in a sample
D)proportion of defects in a sample

Question 7

Which of the following identify a likely out-of-control condition in a control chart (three correct answers):

A)consistently increasing value of $\bar{x}$
B)points near the central line
C)points oscillating back and forth across the central line
D)R outside the control limits of the R chart
E)sample points consistently slightly above the central line
F) $\bar{x}$ outside the control limits of the $\bar{x}$ chart?

Question 8

Which of the following are the three main goals in a total quality management (TQM) program:

A)achieving customer satisfaction
B)computing defects per million
C)continuous improvement
D)developing robust product and process designs
E)encouraging the involvement of the entire workforce
F)forming worker teams
G)statistical process control
H)zero defects

Question 9

Which one of the following measures in a Six Sigma program allows products of different complexity to be directly compared:

A)defects per million units
B)defects per million opportunities
C)defective units per million units

Question 10

Which of the following principles and/or approaches are generally credited to G.Taguchi (two correct answers):

A)acceptance sampling
B)control charts
C)loss function
D)Pareto priority index
E)robust design

Question 11

Which of the following phrases relating to ISO 9000 are correct (three correct answers):

A)certified by the International Standards Office located in Geneva Switzerland
B)developed by the International Organization for Standardization located somewhere in Europe
C)establishes standards for the quality systems and procedures used by a facility
D)establishes standards for the products and services delivered by a facility
E)registration in ISO 9000 is obtained through a third-party agency that certifies the facility's quality systems

Question 12

The two basic types of inspection are inspection by variables and inspection by attributes.The second of these inspections uses which one of the following:

A)destructive testing
B)gaging
C)measuring
D)nondestructive testing

Question 13

Automated 100% inspection can be integrated with the manufacturing process to accomplish which of the following (two best answers):

A)better design of products
B)feedback of data to adjust the process
C)100% perfect quality
D)sortation of good parts from defects

Question 14

Which one of the following is an example of contact inspection:

A)coordinate measuring systems
B)machine vision
C)radiation techniques
D)scanning laser systems
E)ultrasonic techniques

Question 15

Which one of the following is the most important application of vision systems:

A)inspection
B)object identification
C)safety monitoring
D)visual guidance and control of a robotic manipulator