May-2023 Free CRE Test Questions Real Practice Test Questions [Q260-Q275]

NEW QUESTION 260
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?
Response:

NEW QUESTION 261
In a production reliability acceptance test (PRAT) plan, the design/discrimination ratio is expressed as the ratio of Response:

NEW QUESTION 262
A sample is split into subgroups. Testing for each subgroup is stopped after the first failure in that subgroup. The times to first failure are plotted and the distribution parameters are estimated.
Which of the following test types BEST describes this situation?
Response:

NEW QUESTION 263
A system is made up to several identical parts of varying age. The reliability of each of these parts is given by R( t) = e – λt where λ is the failure rate in failures per hour and t is the operating time in hours.
Which of the following is TRUE about the reliability of these parts?
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NEW QUESTION 264
The factorial of 8 is:
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NEW QUESTION 265
Which of the following considerations should a criticality analysis (CA) take into account?
I. Consequences of a failure.
II. Consequential damage of a failure.
III. Damage to the environment.
IV. Potential increase in efficiencies.
Response:

NEW QUESTION 266
When a defense is prepared for a product liability action, all of the following would be considered elements of the assumption of risk the plaintiff must have EXCEPT:
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NEW QUESTION 267
Subcontractor ABC has provided a new canister design. The canisters are rated at 1000 psi, with a standard deviation of 150 psi. The expected stress will be 750 psi with a standard deviation of 200 psi.
What is the probability of failure of the canister?
Response:

NEW QUESTION 268
What functions can normally be expected to be assigned to the Reliability Engineering Department of a company that emphasizes product reliability?
I. Maintain a failure reporting system.
II. Establish reliability growth.
III. Oversee use of statistical tools.
IV. Evaluate customer surveys regarding product costs.
V. Establish and maintain a corrective action system.
Response:

NEW QUESTION 269
The success of the FMEA is principally dependent on:
I. Good communication between the reliability engineer and the designer.
II. Use of the correct form and definitions.
III. Early determination of the reliability critical items.
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NEW QUESTION 270
Specifically, up-time ratio is a measure of:
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NEW QUESTION 271
In general, reliability testing is performed for which of the following reasons?
I. To detect unanticipated failure modes.
II. To compare estimated failure rates to actual failure rates.
III. To monitor reliability growth over time.
IV. To meet or exceed customer expectations.
Response:

NEW QUESTION 272
A company has produced a new module. The failure data on 40 returns are shown below.

If the time to failure follows a normal distribution, what is the probability that time to failure exceeds 20 hours ?
Response:

NEW QUESTION 273
Production error by human operators may be caused by:
I. Inadequate work space.
II. Inadequate job planning information.
III. Poor environmental conditions.
Response:

NEW QUESTION 274
The influence of FMEA on reliability is maximized at which of the following stages of development?
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NEW QUESTION 275
In a software development project, which of the following elements is NOT essential to ensure a reliable product?
Response: