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Pass ASQ Certified Reliability Engineer (CRE) PDF Dumps | Recently Updated 265 Questions
NEW QUESTION 63
The use of plug-in devices improves all of the following EXCEPT:
Response:
- A. Interchangeability
- B. Mean time to repair.
- C. Design reliability.
- D. Fault isolation time.
Answer: C
NEW QUESTION 64
QFD stand for
Response:
- A. Quality Function Deployment.
- B. Qualification of Preliminary Design.
- C. Quality Focused Department.
- D. Quantitative Functional Development.
Answer: A
NEW QUESTION 65
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?
Response:
- A. Inherent reliability.
- B. Use reliability.
- C. Test reliability.
- D. Manufacturing reliability.
Answer: C
NEW QUESTION 66
According to Taguchi, robustly designed experiments should employ all of the following techniques EXCEPT Response:
- A. Signal-to-noise ratios.
- B. Inner and outer arrays
- C. Fold-over capabilities.
- D. Linear graphs.
Answer: C
NEW QUESTION 67
All of the following are purposes of a production reliability assurance test (PRAT) EXCEPT Response:
- A. Detect significant shifts between the as-built reliability requirements and the as-designed reliability requirements
- B. Minimize the need for specific process controls
- C. Assess performance against reliability requirements.
- D. Assess actual product reliability against reliability requirements.
Answer: B
NEW QUESTION 68
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:
Response:
- A. Active parallel system.
- B. Shared load parallel system.
- C. Stand-by parallel system.
- D. Bayes' theorem application.
Answer: C
NEW QUESTION 69
A fault tree analysis (FTA) is a design analysis technique constructed from a "top event". A basic problem with this technique in comparison to a FMECA would be which of the following?
Response:
- A. Understanding logical symbols.
- B. Needing a different FTA for each defined top event.
- C. Assigning probabilities to the various events.
- D. Only electronic systems can be analyzed.
Answer: B
NEW QUESTION 70
The primary aim of sequential-life testing is to determine
Response:
- A. The mean time between failures (MTBF).
- B. Whether a lot meets the reliability goal.
- C. The probability density function of failures.
- D. Whether the stress-level variation is significant.
Answer: B
NEW QUESTION 71
A mission profile is:
I. Time-phased.
II. A summary of events and environments.
III. All activities from initiation to completion of a mission.
Response:
- A. III only
- B. II and III only
- C. I, II and III
- D. I and III only
Answer: C
NEW QUESTION 72
Which of the following is the MOST appropriate reason for selecting accelerated life testing for an expensive product to determine adherence to design requirements?
Response:
- A. The probability density function of the product follows either a log normal or a Weibull distribution.
- B. The test time to provide adequate reliability assurance under normal operating conditions is too long.
- C. The current sample size and the life distribution show wear-out is likely
- D. The error in the population due to part-to-part variation is too large.
Answer: B
NEW QUESTION 73
Combined environmental reliability testing allows for a:
Response:
- A. Range of test conditions in excess of design tolerances
- B. Method for certification of test results.
- C. Multiple stress test
- D. Use of a common acceleration factor for relative MTTF from its accelerated condition to its normal condition
Answer: C
NEW QUESTION 74
A data collection, analysis, and reporting system should:
I. Permit detailed failure and failure rate analysis for varying environments, time periods, storage conditions, etc.
II. Provide distinction between items that failed and item that were wrongly removed.
III. Report data on successes as well as failures.
Response:
- A. II and III only
- B. I, II and III
- C. I and III only
- D. I only
Answer: B
NEW QUESTION 75
Which of the following techniques is NOT used when derating parts to enhance their overall reliability?
Response:
- A. Derating for temperature.
- B. Derating for stress.
- C. Lower power dissipation.
- D. Use of 100% rating.
Answer: D
NEW QUESTION 76
The reliability of a device comprised of various parts functioning in series is the:
Response:
- A. Product of the reliability.
- B. Product of the unreliability
- C. Sum of the reliability.
- D. Sum of the probabilities of the unreliability.
Answer: A
NEW QUESTION 77
Field data for 20 mechanical suspension systems showed 3 failure during the 12 month warranty period.
When failure occurred they were repair within 2 days and the system returned to operation. If the time of failure for the failed system were 4.4 moths, 6.3 months, and 10.7 months after placement in the field, what is the 90% lower confidence estimate on MTBF?
Response:
- A. 35.9 months
- B. 4.1 months
- C. 43.5 months
- D. 33.7 months
Answer: A
NEW QUESTION 78
In completing FMECA, it is important to treat each failure as
Response:
- A. An element of simultaneous event.
- B. A single event.
- C. An element of multiple events
- D. An element of serial events.
Answer: C
NEW QUESTION 79
As the reliability engineer overseeing supplier development, you review the supplier's corrective action problem solving guidebook. It is a structured approach and you notice in the problem definition segment that there is a reference to "is data" and "is not data".
You recognize that they are using a technique promoted and championed by:
Response:
- A. Kepner-Tregoe.
- B. Kaizen Principles.
- C. Kaoru Ishikawa.
- D. Deming's PDCA Cycle.
Answer: A
NEW QUESTION 80
When requesting "worst case" design analysis, you expect the reliability group to:
Response:
- A. Determine whether product requirements can be met with subassemblies assumed at their worst combination of tolerances.
- B. Analyze the worst rejects.
- C. Analyze only those products failing to meet specification requirements.
- D. Assume all subassembly tolerances are at their maximum limit.
Answer: A
NEW QUESTION 81
Which of the following forms of reliability data will BEST provide valuable information on product usage and reliability?
Response:
- A. Quality control data.
- B. Field support data
- C. In-house test results
- D. Independent lab results.
Answer: B
NEW QUESTION 82
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