合格保証付きクイズ2022年最新の実際に出る検証済みのCRE無料試験問題集
無料ASQ Certification CRE究極な学習ガイド（更新されたのは265問があります)
質問 49
Maintenance times on simple with straightforward repair will fit which of the following distributions?
Response:
- A. Exponential.
- B. Lognormal.
- C. Normal.
- D. Geometric.
正解: C
質問 50
A standard parts program is likely to have which of the following positive and negative effects?
Response:
- A. Option C
- B. Option B
- C. Option A
- D. Option D
正解: D
質問 51
When a bathtub curve is used, one characteristic of the flat center portion of the curve is that during this period Response:
- A. The equipment can be considered highly reliable.
- B. There can be only one type of failure in the system.
- C. The time of the next failure is predictable from the time of the last failure.
- D. The reliability of the system can be expressed as an exponential function
正解: D
質問 52
Reliability prediction is:
Response:
- A. A popular method as simulation theory.
- B. More important than reliability attained in the field.
- C. A continuous process starting with paper predictions.
- D. A one time estimation process.
正解: C
質問 53
In 4 flips of a coin the probability of two heads and two tails (in any order) is:
Response:
- A. 3/8
- B. 7/16
- C. 9/16
- D. 1/2
正解: A
質問 54
When assessing failures during a reliability test program, which of the following should a reliability engineer consider first?
Response:
- A. The hazard rate is decreasing.
- B. The hazard rate is increasing.
- C. The hazard rate is constant
- D. The capability of test equipment
正解: C
質問 55
A system is defined by the following reliability block diagram.
Which of the following block diagrams MOST simply represents the system reliability when Unit C is functioning?
Response:
- A. option B
- B. option C
- C. option A
- D. option D
正解: B
質問 56
What is the failure rate of a system composed of three components, each of which can cause a system failure, and which have the following information?
Response:
- A. 0.00913 f/hr.
- B. 0.00671 f/hr
- C. 0.00258 f/hr.
- D. 0.00192 f/hr
正解: C
質問 57
For equal length missions an increase in the MTBF will yield:
I. An increase in availability.
II. An increase in reliability.
III. A decrease in reliability.
IV. A decrease in availability.
Response:
- A. I and II
- B. I
- C. III and IV
- D. III
正解: A
質問 58
Risk management includes which of the following?
I. Integration of risk evaluation in all design phases.
II. Knowledge and consideration of liability law.
III. Adopting procedures, policies and practices to control risks.
IV. Providing product labels and operator manuals where appropriate.
Response:
- A. II and IV only
- B. I, II and IV only
- C. I, II, III and IV
- D. I, II and III only
正解: C
質問 59
Which of the following graphs represents a product that is a good candidate for an accelerated degradation test involving overstress testing?
Response:
- A. Option D
- B. Option C
- C. Option B
- D. Option A
正解: D
質問 60
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?
Response:
- A. Each of the parts has the same probability of failing during a given period of time.
- B. The oldest part is expected to fail first.
- C. The failure rate of the system is given by the product of the individual part failure rates.
- D. The failure rate of the system is given by the product of the individual part reliabilities.
正解: A
質問 61
An engineer must design a product with a probability of success 99%. Assume that both the strength and stress are normally distributed and that the standard deviations are the same.
If the stress is known to be 3000 lbs with a standard deviation of 100 lbs, what must be the approximate designed strength?
Response:
- A. 3330 lbs.
- B. 4020 lbs.
- C. 3730 lbs.
- D. 3100 lbs.
正解: A
質問 62
An aggregate preventive maintenance program can greatly increase the overall availability of a system because of the Response:
- A. Ability to improve product safety.
- B. Emphasis on budgeting operational expenses.
- C. Ability to improve observed reliability.
- D. Improved control of inventory levels.
正解: C
質問 63
The House of Quality incorporates a correlation matrix roof. This describes the relationships between which of the following?
Response:
- A. Hows [design features].
- B. Competitive comparisons.
- C. Whats [customer needs].
- D. Whats and hows.
正解: A
質問 64
Preventive maintenance programs are MOST effective when
Response:
- A. The hazard rate is decreasing.
- B. Random failure occur
- C. The hazard rate is constant.
- D. The hazard rate is increasing.
正解: D
質問 65
A system is turned off every 30 days for 5 minutes for on line maintenance. If the probability of system failure due to hardware failure is negligible, what is the system's unavailability?
Response:
- A. 3.472 × 10 -4
- B. 1.157 × 10 -4
- C. 0.0333
- D. 0.999
正解: B
質問 66
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. Deming's PDCA Cycle.
- B. Kaoru Ishikawa.
- C. Kepner-Tregoe.
- D. Kaizen Principles.
正解: C
質問 67
Failure modes and effects analysis involves what activity?
Response:
- A. The determination of the probability of failure in a specified period of time.
- B. The study of the physics of failure to determine exactly how a product fails and what causes the failure.
- C. A study of the probability of success in a given time period.
- D. The expected number of failures in a given time interval.
正解: B
質問 68
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