ITPEC IP April 2019 Question 15
ITPEC IP April 2019 — Question 15 of 100
Availability is approximately 0.98. For a repairable system, availability is MTBF / (MTBF + MTTR). Substituting the values gives 600 / (600 + 12) = 600 / 612 ≈ 0.9804, which rounds to 0.98.
Answer (d)
Why not others:
- 0.02 is approximately the unavailable fraction, 12 / 612
- 0.20 and 0.88 do not result from the availability formula using the given values
Key rule: Steady-state availability equals average operating time divided by the total average cycle of operating plus repair time.
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