Question

1. The following components are arranged in a series: A = 0.90, B = 0.99, C = 0.75, D = 0.97 1.) What is the system reliability? (Answer: 0.648) (1 point) A B C D 2.) What is the impact on reliability of component C if it were arranged as 4 components in a parallel system with the same reliability (0.75)? (Answer: 0.996) (2 points) 1 2 3 4 3.) What is the impact on reliability if component C is replaced with the four components in problem 2) with components A, B, and D remaining the same? (Answer: 0.8608) (1 point) A B 1 2 3 4 D 4.) What is the impact on reliability if component A is eliminated from problem 3)? (Answer: 0.956) (1 point) B 1 2 3 4 D 2. A 50-hour test is run on 7 items. 4 failed at 3, 20, 35, and 42 hours, with the remaining continuing to operate until the end of the test. What is the mean life and failure rate? (Answer: 62.5) (2 points) 3. If a product has a mean life of 75, what is the failure rate? (Answer: 0.013) (1 point)

          1. The following components are arranged in a series: A = 0.90, B = 0.99, C = 0.75, D = 0.97
1.) What is the system reliability? (Answer: 0.648) (1 point)
A B C D
2.) What is the impact on reliability of component C if it were arranged as 4 components in a parallel system with the same reliability (0.75)? (Answer: 0.996) (2 points)
1 2 3 4
3.) What is the impact on reliability if component C is replaced with the four components in problem 2) with components A, B, and D remaining the same? (Answer: 0.8608) (1 point)
A B 1 2 3 4 D
4.) What is the impact on reliability if component A is eliminated from problem 3)? (Answer: 0.956) (1 point)
B 1 2 3 4 D
2. A 50-hour test is run on 7 items. 4 failed at 3, 20, 35, and 42 hours, with the remaining continuing to operate until the end of the test. What is the mean life and failure rate? (Answer: 62.5) (2 points)
3. If a product has a mean life of 75, what is the failure rate? (Answer: 0.013) (1 point)

1. The following components are arranged in a series: A = 0.90, B = 0.99, C = 0.75, D = 0.97
1.) What is the system reliability? (Answer: 0.648) (1 point)
A B C D
2.) What is the impact on reliability of component C if it were arranged as 4 components in a parallel system with the same reliability (0.75)? (Answer: 0.996) (2 points)
1 2 3 4
3.) What is the impact on reliability if component C is replaced with the four components in problem 2) with components A, B, and D remaining the same? (Answer: 0.8608) (1 point)
A B 1 2 3 4 D
4.) What is the impact on reliability if component A is eliminated from problem 3)? (Answer: 0.956) (1 point)
B 1 2 3 4 D
2. A 50-hour test is run on 7 items. 4 failed at 3, 20, 35, and 42 hours, with the remaining continuing to operate until the end of the test. What is the mean life and failure rate? (Answer: 62.5) (2 points)
3. If a product has a mean life of 75, what is the failure rate? (Answer: 0.013) (1 point)

Added by Beatriz M.

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