Answer :
12. The mean time between failures is 125 hours. Option C is the correct answer.
13. Its system availability is 0.952. Option C is the correct answer.
Mean Time Between Failures (MTBF) is calculated by dividing the total operating time by the number of failures. In this case, the product failed 4 times over 500 hours.
MTBF = Total Operating Time / Number of Failures
MTBF = 500 hours / 4 failures
MTBF = 125 hours
So, the correct answer is c) 125 hours.
System availability (A) can be calculated using the following formula:
Availability (A) = MTBF / (MTBF + MTTR)
Given MTBF = 200 hours and MTTR = 10 hours:
A = 200 / (200 + 10)
A = 200 / 210
A ≈ 0.952
So, the correct answer is c) 0.952.
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Final answer:
The mean time between failures (MTBF) of the product is 125 hours.
Explanation:
To calculate the Mean Time Between Failures (MTBF), we divide the total operating time by the number of failures. In this case, the product has failed 4 times over the last 500 hours.
MTBF = Total Operating Time / Number of Failures
MTBF = 500 hours / 4
MTBF = 125 hours
Therefore, the mean time between failures (MTBF) of the product is 125 hours.
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