A reliability test of 12 pumps is terminated at 1000 hours. There were 5 failures as follows, what is the median rank % for the 4th failure ?

Response:

• A.40.00%
• B.25.62%
• C.24.48%
• D.29.84%

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Which of the following forms of reliability data will BEST provide valuable information on product usage and reliability?
Response:

• A.In-house test results
• B.Field support data
• C.Quality control data.
• D.Independent lab results.

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Which of the following activities is MOST effective in increasing reliability during a product's life cycle?
Response:

• A.Developing an aggressive testing strategy.
• B.Developing capable processes.
• C.Improving gage repeatability and reproducibility
• D.Developing robust design.

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What is the expression for operation availability?
Response:

• A.Operation time / total down time.
• B.Operation time / [operate time + total down time].
• C.Active down time / operate time.
• D.Off time / operate time.

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A system is turned off every 30 days for 5 minutes for on line maintenance. If the probability of system failure due to hardware failure is negligible, what is the system's unavailability?
Response:

• A.0.0333
• B.3.472 × 10 -4
• C.1.157 × 10 -4
• D.0.999

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