ASQ
CRE · Question #14
The following reliability block diagram shows components A, B, C, D and E with reliability Ra, Rb, Rc, Rd and Re, respectively. A or B are system entry points. On the basis of this information, what…
The correct answer is D. Ra Rc [1 - (1 - Rd) (1 - Re)] + (1 - Ra) Rb Rc [1 - (1 - Rd) (1 - Re)]. You've hit your session limit · resets 10:20pm (America/New_York)
System Reliability
Question
The following reliability block diagram shows components A, B, C, D and E with reliability Ra, Rb, Rc, Rd and Re, respectively. A or B are system entry points. On the basis of this information, what is the reliability of the system?
Options
- A[1 - (1 - Ra Rb)] Rc [1 - (1 - Rd Re)]
- BRa Rc [1 - (1 - Rd Re)] + (1 - Ra) Rb Rc [1 - (1 - Rd) (1 - Re)]
- CRa Rb [1 - (1 - Rd) (1 - Re)] Rc (1 - Ra) Rb [1 - (1 - Rd) (1 - Re)]
- DRa Rc [1 - (1 - Rd) (1 - Re)] + (1 - Ra) Rb Rc [1 - (1 - Rd) (1 - Re)]
How the community answered
(69 responses)- A16% (11)
- B3% (2)
- C7% (5)
- D74% (51)
Explanation
You've hit your session limit · resets 10:20pm (America/New_York)
Topics
#reliability block diagram#parallel redundancy#series-parallel system#system reliability expression
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