Fifteen(15) motors were tested for a total of 1,200 cumulative hours, with four failure occuring. The test was then failure-truncated. If the failure rate is assumed to be constant, what is the 95% lower confidence limit of MTBF?
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A substantial fraction of the usual design effort need NOT be devoted to a reliability program.:
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Which of the following is a primary concern for a reliability engineer who uses publicly available sources for mechanical part-failure rates?
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An undesired event in a system led to the below fault tree. Which of the following are the cut sets of the fault tree?

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What type of failure is usually reduced by periodic overhaul and replacement of component parts?
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