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29 which of the following best illustrates the

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29.Which of the following best illustrates the importance of employee involvement in achievingsuccessful maintenance and reliability?a.Operator, machine, and mechanic are independent of one another.b.Small standard deviations tend to favor preventive maintenance over breakdown maintenance.c.Infant mortality in products can be decreased through improved owner's manuals and after-salesservice and customer training.d.Employee involvement through such elements as reward systems and power sharing combinewith good maintenance and reliability procedures to improve capacity and reduce variability.e.Empowered operators have higher competence at repairs than field service or depot service.d (The strategic importance of maintenance and reliability, moderate)30.What is the reliability of a four-component product, with components in series, and componentreliabilities of .90, .95, .98, and .99?a.under 0.83b.at most 0.90c.0.955d.no less than .99e.none of the abovea (Reliability, moderate) {AACSB: Analytic Skills}31.A system is composed of three components A, B, and C. All three must function for the system to function.There are currently no backups in place. The system has a reliability of 0.966. If a backup is installed forcomponent A, the new system reliability will bea. unchangedb. less than 0.966c. less than 0.998d. greater than 0.966e. none of the aboved (Reliability, moderate) {AACSB: Analytic Skills}32.A system has three componentsin serieswith reliabilities 0.9, 0.7, and 0.5. System reliability isa. 0.315b. 0.500c. 0.700d. 0.900e. 2.100a (Reliability, moderate) {AACSB: Analytic Skills}33.A system has three componentsin parallelwith reliabilities 0.9, 0.7, and 0.5. System reliability isa. 0.315b. 0.700c. 0.900d. 0.985e. 2.100d (Reliability, moderate) {AACSB: Analytic Skills}34.Components A, B, and C are connected in series. Component D is connected in parallel tocomponent B. Which of the following statements istrue?a. The system works only if A works, B or C works, and D works.
b. Component B must work for the system to work.c. The system works when A works, C, works, and either B or D works.d. Components B and C are backups to A.e. The system works if D works, and any of A, B, or C works.c (Reliability, moderate) {AACSB: Analytic Skills}35.A job consists of a series of three tasks. Task 1 is performed correctly 98% of the time, task 2 isperformed correctly 99% of the time, and task 3 is performed correctly 97% of the time. The reliabilityof this job isa. 91.27%b. 94.11%c. 97.00%d. 98.00%e. 99.00%b (Reliability, moderate) {AACSB: Analytic Skills}36.As the number of components in a system connectedin a seriesdecreases, all other things being equal,the reliability of the system usuallya. increasesb. stays the samec. decreasesd. increases, then decreasese. decreases, then increasesa (Reliability, moderate) {AACSB: Analytic Skills}37.A product has three components, A, B, and C, with reliabilities of 0.95, 0.98, and 0.995. Engineers intendto put a redundant component A that has reliability 0.70. With this change, system reliability willa. fall by 20%b. fall by 10% or lessc. rised. cannot determine from the information providede. none of the abovec (Reliability, moderate) {AACSB: Analytic Skills}38.

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