Question: Deadline 11-August 2015 1. A structural code requires that the reliability index of a cable must have a value of =5.0. If the load and

Deadline 11-August 2015 1. A structural code requires that the reliability index of a cable must have a value of =5.0. If the load and capacity considered to be normally distributed with coefficient of variations f 0.2 and 0.1 (low and high) respectively, what safety factor must be used? 2. Bearing failure follow a Weibull distribution with =2.0 and =5000 operating hours. How frequently must inspection (testing) and repair take place if bearing availability is to be maintained at least 0.95. 3. Find a Binomial acceptance-testing plan to demonstrate a reliability of 0.98. An unacceptable reliability is 0.90. The risk of incorrectly accepting or incorrectly rejecting should be less than 10%. What is the minimum sampling size for which both risk are less than 5%. 1

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