The following fault tree diagram was developed by a team.

The probability are as follow:
A1 = 0.90 B1 = 0.90 C1 = 0.80
A2 = 0.80 B3 = 0.80 C2 = 0.70
A4 = 0.70
The likelihood that the system fault will occur is
Response:

• A.0.5034
• B.0.3686
• C.0.3073
• D.0.4977

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

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

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Which of the following BEST describe a critical item in reliability?
Response:

• A.A critical reliability design methodology and process.
• B.A highly reliable item used in a critical product.
• C.An item that affects safety and mission goals
• D.An item manufactured by an unproven technology.

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Availability of a system is roughly the:
Response:

• A.Sum of the individual system availabilities.
• B.The quotient of the individual subsystem availability.
• C.The difference of the individual subsystem.
• D.Product of the individual subsystem availabilities.

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Some keys to a successful reliability program include:
I. An evolutionary approach to new product development
II. Emphasis on manufacturing conformance to specifications
III. Development of strong long-term relationships with a small number of suppliers IV. The use of standards for guidance and lessons learned Response:

• A.II, III and IV only
• B.I, II, III and IV
• C.I and IV only
• D.I, III and IV only

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