Operations Management
13th Edition
ISBN: 9781259667473
Author: William J Stevenson
Publisher: McGraw-Hill Education
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Chapter 4.S, Problem 2DRQ
Summary Introduction
To identify: The reasons why the overall reliability of the product is low even though the reliabilities of individual components are fairly high.
Introduction:
Reliability:
Reliability can be termed as the measure of the capability of a product or any service to perform its intended job under a predetermined set of conditions. The product or service will yield the same results on the repeated trials. It is the degree of consistency of a measure.
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Explain why a product or system might have an overall reliability that is low even though it is com- prised of components that have fairly high reliabilities.
"High reliability can be achieved in a product without having high reliability in the component parts. In fact, any reliability target, no matter how high, can be achieved with only mediocre parts, so long as enough of them are present." Discuss; an example may help.
The two main tactics for improving reliability are _______and______.
Chapter 4 Solutions
Operations Management
Ch. 4.4 - Prob. 1.1RQCh. 4.4 - Prob. 1.2RQCh. 4.8 - LEGO A/S IN THE PINK Lego A/S overcame the recent...Ch. 4.8 - Prob. 2.1RQCh. 4.8 - Prob. 2.2RQCh. 4.11 - THE CHALLENGES OF MANAGING SERVICES Services can...Ch. 4.11 - THE CHALLENGES OF MANAGING SERVICES Services can...Ch. 4.S - Prob. 1DRQCh. 4.S - Prob. 2DRQCh. 4.S - Prob. 3DRQ
Ch. 4.S - Consider the following system: Determine the...Ch. 4.S - A product is composed of four parts. In order for...Ch. 4.S - A system consists of three identical components....Ch. 4.S - A product engineer has developed the following...Ch. 4.S - The guidance system of a ship is controlled by a...Ch. 4.S - One of the industrial robots designed by a leading...Ch. 4.S - A production line has three machines A, B, and C,...Ch. 4.S - Prob. 8PCh. 4.S - A Web server has five major components that must...Ch. 4.S - Repeat Problem 9 under the condition that one of...Ch. 4.S - Hoping to increase the chances of reaching a...Ch. 4.S - An electronic chess game has a useful life that is...Ch. 4.S - A manufacturer of programmable calculators is...Ch. 4.S - Lucky Lumen light bulbs have an expected life that...Ch. 4.S - Prob. 15PCh. 4.S - Prob. 16PCh. 4.S - A major television manufacturer has determined...Ch. 4.S - Prob. 18PCh. 4.S - Determine the availability for each of these...Ch. 4.S - Prob. 20PCh. 4.S - A manager must decide between two machines. The...Ch. 4.S - Prob. 22PCh. 4.S - Auto batteries have an average life of 2.7 years....Ch. 4 - Prob. 1DRQCh. 4 - Prob. 2DRQCh. 4 - Prob. 3DRQCh. 4 - Prob. 4DRQCh. 4 - Prob. 5DRQCh. 4 - Prob. 6DRQCh. 4 - Prob. 7DRQCh. 4 - Prob. 8DRQCh. 4 - a. What is meant by the term life cycle? b. Why...Ch. 4 - Prob. 10DRQCh. 4 - Prob. 11DRQCh. 4 - Prob. 12DRQCh. 4 - Prob. 13DRQCh. 4 - Explain what quality function development is and...Ch. 4 - Prob. 15DRQCh. 4 - Prob. 16DRQCh. 4 - Prob. 17DRQCh. 4 - Prob. 18DRQCh. 4 - Prob. 19DRQCh. 4 - Describe some of the trade-off that are...Ch. 4 - Prob. 2TSCh. 4 - Prob. 3TSCh. 4 - Prob. 1CTECh. 4 - Prob. 2CTECh. 4 - Prob. 3CTECh. 4 - Prob. 4CTECh. 4 - Prob. 5CTECh. 4 - Give two examples of unethical conduct involving...Ch. 4 - Prob. 1PCh. 4 - Prob. 2PCh. 4 - Prepare a service blueprint for each of these...Ch. 4 - Prepare a service blueprint for each of these post...Ch. 4 - Prob. 5PCh. 4 - Prob. 6PCh. 4 - Prob. 7PCh. 4 - Prepare a table similar to that shown in Problem...
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- A serial system is assembled in house from 20 parts. To be successful in the marketplace the system has to have three sigma reliability. What level of reliability of each part is necessary to achieve that level of the overall performance?arrow_forwardAn office security system at PAC Ltd has two component parts, both of which must work for the system to function. Part 1 has a reliability of 80 percent, and part 2 has a reliability of 98 percent. Compute the reliability of the system.arrow_forwardYou have a system composed of a serial connection of four components with the following reliabilities: What is the reliability of the system?arrow_forward
- Explain carefully how redundancy improves product reliability?arrow_forwardReliability can be considered a dimension of either product or service quality. Select one: O a. TRUE O b. FALSEarrow_forwardWhen a system reliability target is not met, what must be done? Discuss reliability block diagramarrow_forward
- What are the primary factors that can decrease system reliability?arrow_forwardDiscuss the key factors that contribute to system reliability. What are some common challenges in achieving high system reliability?arrow_forwardIn the context of system reliability, explain the terms Mean Time Between Failures (MTBF) and Mean Time To Repair (MTTR). How are these metrics used in assessing and improving system reliability?arrow_forward
- The semiconductor used in the Sullivan Wrist Calculatorhas five circuits, each of which has its own reliability rate. Component 1 has a reliability of .90; component 2, .95; com-ponent 3, .98; component 4, .90; and component 5, .99. What is the reliability of one semiconductor?arrow_forwardElizabeth Irwin's design team has proposed the following system with component reliabilities as indicated: R2=0.88 R1=0.92 R4=0.92 R3=0.88 The overall reliability of the proposed system = % (enter your response as a percentage rounded to two decimal places). Hint: The system functions if either R2 or R3 work.arrow_forwardReliability metrics includes: Select one: a. Probability of failure on demand, Rate of occurrence of failures/Mean time to failure, and Availability b. Probability of failure on demand c. Availability d. Rate of occurrence of failures/Mean time to failurearrow_forward
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