Engineering Board Exam Reviewer · Engineering Management · hard
A machine has an MTBF of 500 hours and a mean time to repair (MTTR) of 20 hours. What is its availability?
- 96.15%
- 96.00%
- 4.00%
- 100.00%
Answer
A. 96.15%
Solution
Availability = MTBF/(MTBF + MTTR) = 500/520 = 96.15%.
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