ASQ
CRE · Question #262
Three identical subsystem are connected in an active parallel, non-load-sharing system. At least two of the tree must work in order for the system to work. The time to failure for each subsystem is…
The correct answer is A. 3 e - 2 t - 2e - 3 t. See the full explanation below for the reasoning.
System Reliability
Question
Three identical subsystem are connected in an active parallel, non-load-sharing system. At least two of the tree must work in order for the system to work. The time to failure for each subsystem is exponential with a common failure rate, . The reliability of the system can be expressed as which of the following?
Options
- A3 e - 2 t - 2e - 3 t
- B3 e - 3 t - 2e - 2 t
- C1 -2 e - 3 t - 3e - 2 t
- D1 -3 e - 2 t + 2e - 2 t
How the community answered
(32 responses)- A72% (23)
- B6% (2)
- C3% (1)
- D19% (6)
Topics
#parallel redundancy#k-of-n system#exponential distribution#system reliability
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