Thursday, June 7, 2007

Question 37

What is the operation rate of a parallel system consisting of the two devices shown in the diagram below? In this example, if one of the devices is operating, then the system is considered as operating. On both devices A and B, the MTBF (mean time between failures) is 576 hours, and the MTTR (mean time to recovery) is 24 hours.

q37.gif

a) 0.9216
b) 0.96
c) 0.9872
d) 0.9984

answer

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