Operations and Supply Chain Management 9th edition
9th Edition
ISBN: 9781119320975
Author: Roberta S. Russell, Bernard W. Taylor III
Publisher: WILEY
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Chapter 4, Problem 4P
Summary Introduction
To explain: A broadcast system is made up of 5 subsystems, each with the same reliability.
Calculate the required reliability of a subsystem for the entire system to have 95% broadcast success, 98% success, 99% success, and 100% success.
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Students have asked these similar questions
An 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.
A chain is composed of identical links with reliability of 0.9. How many links must a chain have in order for its reliability to be less than 0.5?
Hint: Reliability of a series system is Rs=R1*R2….*Rn, which equals 0.9 multiplied by itself n times to get less than 0.5. Hence, Rs-0.5=0.9. By applying Ln to both sides, ln(0.5)=n*Ln(0.9). Now solve for n to get the answer.
What are the primary factors that can decrease system reliability?
Chapter 4 Solutions
Operations and Supply Chain Management 9th edition
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- Examine the systems given below. Which system is morereliable, a or b? c or d? Now calculate the reliability of eachsystem. Were your perceptions correct?If it costs $1000 for each 90% reliable component, $1500for each 93% component, $2000 for each 95% reliablecomponent, and $10,000 to replace a failed system, whichsystem would you choose, a or b? c or d?arrow_forwardPlease do not give solution in image format thankuarrow_forwardA system consisting of two identical components A& B. (a) Under what conditions does the system fail? (b) Ifthe reliability (i.e. the ability of the system to perform itsintended function satisfactorily) of components A & B are90% and 80%, respectively, under what conditions does thesystem fail?arrow_forward
- An LCD projector in an offi ce has a main light bulb witha reliability of 0.90 and a backup bulb, the reliability of which is0.80. Th e system looks as follows: What is the reliability of the system?arrow_forwardWhen a system reliability target is not met, what must be done? Discuss reliability block diagramarrow_forwardDiscuss the concept of reliability modeling and its significance in assessing the dependability of complex systems.arrow_forward
- 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_forwardRick Wing, salesperson for Wave SolderingSystems, Inc. (WSSI), has provided you with a proposal forimproving the temperature control on your present machine.The machine uses a hot-air knife to cleanly remove excess solder from printed circuit boards; this is a great concept, butthe hot-air temperature control lacks reliability. According toWing, engineers at WSSI have improved the reliability of thecritical temperature controls. The new system still has the foursensitive integrated circuits controlling the temperature, butthe new machine has a backup for each. The four integratedcircuits have reliabilities of .90, .92, .94, and .96. The fourbackup circuits all have a reliability of .90.a) What is the reliability of the new temperature controller?b) If you pay a premium, Wing says he can improve all fourof the backup units to .93. What is the reliability of thisoption?arrow_forwardAs a reliability engineer, your job is to help the plant to achieve its goals. Improvingavailability refers to downtime reduction. This includes managing premature failure(condition monitoring), reducing premature failure (defect elimination), improvedwork management and improved spares management” i. What approaches could be applied during the design phase of an asset toimprove its reliability?arrow_forward
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