Real CRE Exam Questions are the Best Preparation Material [Q227-Q248]

QUESTION 227
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:

QUESTION 228
What is the general use of an R chart?
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QUESTION 229
Human factors are important considerations when designing for reliability because:
I. Habits are sometimes difficult to change.
II. Conditions such as lighting and heating influence performance.
III. Weak parts must be easily replaceable.
IV. Age and skill can limit one’s ability to use equipment correctly.
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QUESTION 230
Inherent reliability can be increased by:
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QUESTION 231
Design review should be a process to ensure and/or develop more reliable design. Which of the following person(s), if any, should work with the designer during the design process?
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QUESTION 232
Which of the following activities is MOST effective in increasing reliability during a product’s life cycle?
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QUESTION 233
The mean of the normal logarithms of the repair times is 4.3 hours with a standard deviation of 0.7 hours. What is the maintainability for an allowed repair time of 120 hours?
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QUESTION 234
When designing experiments, which term describes the situation in which the effects of two factors are not separable?
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QUESTION 235
On the basis of the fault tree below, what is the likelihood of the top event occurring?

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QUESTION 236
As the reliability engineer of a medium sized firm, you have developed a reliability test plan for the shop.
The shop manufactures products on a medium batch size basis. The batches range from 30 to 500 pieces per order. The test plan should include all of the following consideration EXCEPT Response:

QUESTION 237
Total system effectiveness can be predicted during the conceptual or development design by considering three main elements of reliability. Which of the four elements does NOT apply?
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QUESTION 238
A design review committee has recommended changes to a proposed design. Whose job is it to investigate and incorporate the ideas that will aid product reliability?
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QUESTION 239
The “least squares” description in regression analysis pertains to:
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QUESTION 240
Which of the following calculation is used to determine the overall tolerance for the serial combination of the component?
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QUESTION 241
Which test would potentially take longer than expected to complete?
I. Time terminated tests.
II. Failure terminated tests.
III. Sequential tests (PRST)
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QUESTION 242
The investment in automated test equipment is often justified under which of the following circumstances Response:

QUESTION 243
The software test design method that involves seeding errors into a program is known is:
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QUESTION 244
Availability of a system is roughly the:
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QUESTION 245
A primary purpose of burn-in testing of parts is to
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QUESTION 246
It is of primary importance that the choice of the time-to-failure distribution to represent a particular reliability situation be based on:
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QUESTION 247
Large power generating stations frequently have auxiliary turbine generators operating at speed. They do not produce power but act as back-ups. This type of redundancy is known as:
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QUESTION 248
Experimental design plans usually call for testing a number of factors and keeping all other conditions as nearly constant as possible.
Taguchi Methods call for similar techniques, but with a twist. Noise conditions are changes a bit to determine robustness. Where are the noise factors placed?
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