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CRE · Question #183
CRE Question #183: Real Exam Question with Answer & Explanation
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Question
A system is made up to several identical parts of varying age. The reliability of each of these parts is given by R( t) = e - t where is the failure rate in failures per hour and t is the operating time in hours. Which of the following is TRUE about the reliability of these parts?
Options
- AThe oldest part is expected to fail first.
- BThe failure rate of the system is given by the product of the individual part reliabilities.
- CEach of the parts has the same probability of failing during a given period of time.
- DThe failure rate of the system is given by the product of the individual part failure rates.
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