EBK OM
6th Edition
ISBN: 9781305888210
Author: Collier
Publisher: YUZU
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Question
Chapter 5, Problem 7PA
Summary Introduction
Interpretation:Percentage improvement in reliability by adding second fan.
Concept Introduction:
Reliability is the probability of a product which performs under designed and controlled atmosphere in a given period of time. This is checked to know the accuracy of the product.
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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_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_forward"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.arrow_forward
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- Explain carefully how redundancy improves product reliability?arrow_forwardConsider a product with three components in series, with reliabilities of 0.90, 0.80, and 0.99 for components A, B, and C, respectively. Furthermore, component B uses a backup that also has a reliability of 0.80. What is the reliability of the system?arrow_forwardThe ABC Bank processes loan applications through 3 clerks set up in series, with reliabilities of 0.90, 0.80, and 0.99. a. The bank manager decided to provide redundancy to the two least reliable clerks. Reliability measures of the redundants are equal to the corresponding primary clerk. What is the new system reliability? Show illustration and complete solution. b. What will be the system reliability if the bank replaces the clerk with reliability measure of 0.80 and his redundant, with a 90% reliable clerk? Show illustration and complete solution.arrow_forward
- Consider Solved Problem 17.2 given in the textbook. If the reliability of each and every component shown in R1, R2, R3, R4 and R5 are reduced by 15% (for example, R2 becomes 0.8), calculate the total reliability of the system. As done in the solved example, be sure to show all steps. NOTE: You should not redraw the diagram. Solved 17.2 A recent engineering change at Sullivan Wrist Calculator places a backup component in each of the two least reliable transistor circuits. The new circuits will look like the following: What is the reliability of the new system? Solution attachedarrow_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_forwardThe diagram below identifies the elements of service as provided by a soft drink vending machine. Each element has an estimate of its own reliability, independent of the others. What is the reliability of the "system"?arrow_forward
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