Category CRE

NO.182 Which of the following CANNOT be classified as a computer output device?
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NO.183 In order to sustain a high system reliability in the field, it is BEST to:
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NO.184 Which answer BEST describes the events and operating conditions an item experiences from mission initiation to completion?
The events may include the research and development phase, product manufacturing, warehousing, and so on, to mission completion.
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NO.185 A go/no-go device is tested until it fails. If X is the number of tests to first failure with no wear out present, and the probability of success on each test is .99, then the probability that X is greater than 5 is:
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NO.186 Top probability of the top event is represented by which of the following expressions?

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NO.187 Which of the following techniques would you use to determine the cost effectiveness of a new production machine, amortized over 5 years of expected useful life ? Current warranty costs are $50,000/year for this production line.
The new machine plus associated costs will require a $150,000 investment, but warranty costs are projected to drop to $30,000/year. Consider that administrative overhead is 25%, the profit coefficient is 8%, and present worth is subject to 5% discounting.
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NO.188 Preventive maintenance time includes:
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NO.189 Which of the following graphs represents a product that is a good candidate for an accelerated degradation test involving overstress testing?

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NO.190 Specifications are written on parts to:
I. Enable procurement to buy usable parts.
II. Establish mechanical, functional, environmental and reliability requirements.
III. Provide inspection criteria.
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NO.191 A comprehensive failure analysis and corrective action feedback loop must determine:
I. What failed.
II. How it failed.
III. Why it failed.
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NO.192 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:

NO.193 What is the reliability of this system?
Where component reliabilities, A = 0.80 B = 0.95 C = 0.82 D = 0.85 E = 0.75

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NO.194 Product safety is a concern in today’s environment. If a risk assessment is performed near the end of the design stage, consideration should be based on:
I. Hazard probability.
II. Hazard severity.
III. Risk impact.
IV. Cost impact.
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NO.195 The primary reason for improving equipment accessibility is to:
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NO.196 Maintainability engineering is performed for all of the following reasons EXCEPT to Response:

NO.197 Which of the following is the GREATEST benefit of a fault-tree analysis?
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NO.198 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 ?

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NO.199 Which of the following is a discrete probability distribution?
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NO.200 System and cost effectiveness analysis outputs:
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NO.201 Which of the following should be avoided in parts selection to enhance the design reliability?
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NO.202 Preventive maintenance is characterized by:
I. Replacing failed/defect items as they are found in normal service use II. A planned program of tests, inspections, and/or replacements III. Replacing items just before they fail Response: