Question 1

The number of failures per unit time during the duration under consideration is called:

Accepted Answer

Failure rate is the rate at which failures occur during a specific duration of time. It is usually measured in failures per hour or failures per million hours. Mean time between failures (MTBF) and mean time to failure (MTTF) are different measures that are used to describe the reliability of a system. Conformance rate is not directly related to failure analysis.

Question 2

______ represents a set of tools and methodologies used in the product development process for ensuring that goods and services will meet customer needs and achieve performance objectives,and that the processes used to make and deliver them achieve Six Sigma capability.

Accepted Answer

The answer of ______ represents a set of tools and...

Question 3

This phase in the product development process usually includes prototype testing.

Accepted Answer

Prototype testing is a key component of the product development phase, which involves creating and testing prototypes in order to refine and improve the product design before it is brought to market. The other phases listed (idea generation, preliminary concept development, and market evaluation) occur earlier or later in the product development process and do not typically involve prototype testing.

Question 4

Determine the probability of system failure for a two-component parallel system if the individual component reliabilities are 0.95 and 0.96,respectively.

Accepted Answer

The probability of system failure in a parallel system is the product of the probabilities of individual component failures. The failure probabilities are 0.05 (1-0.95) and 0.04 (1-0.96), so the system failure probability is 0.05 * 0.04 = 0.002.

Question 5

The predicted reliability that is determined by the design of a product or process is called:

Accepted Answer

Inherent reliability refers to the reliability that is built into the design of a product or process, and is based on the assumptions and specifications of the design. It is sometimes also referred to as engineering reliability or design reliability.

Question 6

_____ alleviate(s)the problems in product development arising out of poor intraorganizational cooperation.

Accepted Answer

Concurrent engineering is a product development process that emphasizes the parallelization of tasks and collaboration between various functions and departments within an organization to streamline the overall product development timeline and reduce errors or rework. Thus, it helps to alleviate problems arising out of poor intraorganizational cooperation. Quality circles, cross-functional training, and third-party design teams can also help in improving intraorganizational cooperation, but they may not directly alleviate the problems in product development arising out of poor intraorganizational cooperation.

Question 7

A reliability of 0.98 means that,on average:

Accepted Answer

A reliability of 0.98 means that out of 100 items, 98 will perform as expected. So, option C is the correct choice. Options A, B, and D are incorrect because they suggest that the reliability score indicates the percentage or number of items that will fail, which is not true. Reliability is a measure of the probability that an item will perform as expected.

Question 8

The system reliability for a two-component parallel system is 0.99968.If the reliability of the first component is 0.992,determine the reliability of the second component.

Accepted Answer

The answer of The system reliability for a two-component parallel...

Question 9

Which of the following is NOT a phase in the product development process?

Accepted Answer

The three phases listed are all part of the product development process, but compliance assessment is not typically considered a distinct phase on its own. Instead, it is typically integrated into other phases, such as product/process development, to ensure that the product is compliant with relevant regulations and standards.

Question 10

The reliability function for a component is R(T)= e^λT.This function represents:

Accepted Answer

The reliability function, R(T), represents the probability that the component will not fail within T time units. This is because R(T) is the complement of the cumulative distribution function (CDF), which gives the probability of failure before time T. Therefore, option B is the best choice. Options A, C, and D are incorrect because they do not accurately describe the reliability function as given in the question.

Question 11

The early failure period in a reliability study is sometimes called the:

Accepted Answer

The early failure period in a reliability study is referred to as the "infant mortality period." This is because the failures that occur during this period are similar to deaths that occur in newborn infants. The term "infant mortality" refers to the phenomenon of products failing early in their life cycle, which is a common feature of complex systems.

Question 12

Six units were tested over an 80-hour period.One unit failed after 5 hours and a second unit failed after 60 hours.The remaining four units performed satisfactorily until the end of the test.The failure rate is:

Accepted Answer

The failure rate is the number of failures divided by the total number of unit-hours of operation. In this case, there were 2 failures and 6 * 80 = 480 unit-hours of operation. Therefore, the failure rate is 2 / 480 = 0.0052 units/hour.

Question 13

Product failure that occurs at the beginning of a product's life as a result of manufacturing or material defects is called:

Accepted Answer

The answer of Product failure that occurs at the beginning...

Question 14

The functions of multifunctional teams involved in concurrent engineering are all of the following EXCEPT to:

Accepted Answer

Multifunctional teams involved in concurrent engineering do not conduct market evaluations and collate data to enhance the design and delivery system. This function typically falls under the responsibility of the marketing department.

Question 15

_____ is a process in which all major functions involved with bringing a product to market are continuously involved with product development from conception through sales.

Accepted Answer

Concurrent engineering involves cross-functional teams working together throughout the product development process, including design, manufacturing, marketing, and sales. This approach ensures that all aspects of the product, from design to marketability, are considered and optimized at each stage of development. This approach contrasts with traditional sequential engineering, where each function works on the product in isolation, potentially leading to problems when the product is finally integrated.

Question 16

The acronym MTBF stands for:

Accepted Answer

MTBF stands for "mean time between failures." It refers to the average amount of time between one failure and the next, calculated by adding up all the times between failures and dividing by the number of failures.

Question 17

According to the text,one of the most significant barriers to efficient product development is poor:

Accepted Answer

The text states that one of the most significant barriers to efficient product development is poor intraorganizational cooperation. This suggests that there may be communication or collaboration issues between different departments or teams within a company, which can slow down the product development process. Poor design process, management focus on innovation, and market intelligence may also be obstacles, but they are not explicitly highlighted as the most significant barrier in the text.

Question 18

If no serious problems are found,the company releases the product to manufacturing or service delivery teams at this stage in the product development process.

Accepted Answer

Full-scale production is the stage where the product is released to the manufacturing or service delivery teams. This stage involves producing the product on a larger scale and ensuring its quality and consistency before it is introduced to the market.

Question 19

Determine the probability that a three-component series system will survive for 200 hours if the individual components have failure rates of 0.003,0.004,and 0.001 per hour,respectively.Assume the reliability function is exponential.

Accepted Answer

The answer of Determine the probability that a three-component series...

Question 20

Which of the following activities is NOT part of DFSS?

Accepted Answer

DFSS stands for Design for Six Sigma, which is a methodology used to develop new products or processes. The four main phases of DFSS are Concept Development, Design optimization, Design Verification, and Design Validation. Product development is not a separate activity in DFSS, but rather falls under the Design Optimization phase. Therefore, the correct answer is B.

Quiz 12: Design For Quality And Product Excellence

The number of failures per unit time during the duration under consideration is called:

______ represents a set of tools and methodologies used in the product development process for ensuring that goods and services will meet customer needs and achieve performance objectives,and that the processes used to make and deliver them achieve Six Sigma capability.

This phase in the product development process usually includes prototype testing.

Determine the probability of system failure for a two-component parallel system if the individual component reliabilities are 0.95 and 0.96,respectively.

The predicted reliability that is determined by the design of a product or process is called:

_____ alleviate(s) the problems in product development arising out of poor intraorganizational cooperation.

A reliability of 0.98 means that,on average:

The system reliability for a two-component parallel system is 0.99968.If the reliability of the first component is 0.992,determine the reliability of the second component.

Which of the following is NOT a phase in the product development process?

The reliability function for a component is R(T) = e^λT.This function represents:

The early failure period in a reliability study is sometimes called the:

Six units were tested over an 80-hour period.One unit failed after 5 hours and a second unit failed after 60 hours.The remaining four units performed satisfactorily until the end of the test.The failure rate is:

Product failure that occurs at the beginning of a product's life as a result of manufacturing or material defects is called:

The functions of multifunctional teams involved in concurrent engineering are all of the following EXCEPT to:

_____ is a process in which all major functions involved with bringing a product to market are continuously involved with product development from conception through sales.

The acronym MTBF stands for:

According to the text,one of the most significant barriers to efficient product development is poor:

If no serious problems are found,the company releases the product to manufacturing or service delivery teams at this stage in the product development process.

Determine the probability that a three-component series system will survive for 200 hours if the individual components have failure rates of 0.003,0.004,and 0.001 per hour,respectively.Assume the reliability function is exponential.

Which of the following activities is NOT part of DFSS?

Quiz 12: Design For Quality And Product Excellence

The number of failures per unit time during the duration under consideration is called:

______ represents a set of tools and methodologies used in the product development process for ensuring that goods and services will meet customer needs and achieve performance objectives,and that the processes used to make and deliver them achieve Six Sigma capability.

This phase in the product development process usually includes prototype testing.

Determine the probability of system failure for a two-component parallel system if the individual component reliabilities are 0.95 and 0.96,respectively.

The predicted reliability that is determined by the design of a product or process is called:

_____ alleviate(s) the problems in product development arising out of poor intraorganizational cooperation.

A reliability of 0.98 means that,on average:

The system reliability for a two-component parallel system is 0.99968.If the reliability of the first component is 0.992,determine the reliability of the second component.

Which of the following is NOT a phase in the product development process?

The reliability function for a component is R(T) = eλT.This function represents:

The early failure period in a reliability study is sometimes called the:

Six units were tested over an 80-hour period.One unit failed after 5 hours and a second unit failed after 60 hours.The remaining four units performed satisfactorily until the end of the test.The failure rate is:

Product failure that occurs at the beginning of a product's life as a result of manufacturing or material defects is called:

The functions of multifunctional teams involved in concurrent engineering are all of the following EXCEPT to:

_____ is a process in which all major functions involved with bringing a product to market are continuously involved with product development from conception through sales.

The acronym MTBF stands for:

According to the text,one of the most significant barriers to efficient product development is poor:

If no serious problems are found,the company releases the product to manufacturing or service delivery teams at this stage in the product development process.

Determine the probability that a three-component series system will survive for 200 hours if the individual components have failure rates of 0.003,0.004,and 0.001 per hour,respectively.Assume the reliability function is exponential.

Which of the following activities is NOT part of DFSS?

The reliability function for a component is R(T) = e^λT.This function represents: