Real ASQ CRE Exam Questions [Updated 2021]
CRE Exam Dumps Pass with Updated 2021 Certified Reliability Engineer (CRE)
NEW QUESTION 71
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. 43.5 months
- B. 35.9 months
- C. 33.7 months
- D. 4.1 months
Answer: B
NEW QUESTION 72
The proper software tool for software development projects can help reduce test time. The software tools used to measure internal test coverage are called.
Response:
- A. Test verifiers.
- B. Test harnesses.
- C. Assertion processors.
- D. Static analyzer.
Answer: A
NEW QUESTION 73
Which of these terms is commonly used as the probability of rejecting material produced at an unacceptable quality level?
Response:
- A. 1 - α only
- B. β only
- C. 1 - β only
- D. α only
Answer: C
NEW QUESTION 74
What is the MOST important role performed by a failure review board?
Response:
- A. To monitor corrective action.
- B. To assess failures.
- C. To ensure that corrective action is effective.
- D. To monitor reliability growth.
Answer: C
NEW QUESTION 75
Which of the following is the GREATEST benefit of a fault-tree analysis?
Response:
- A. It is comprehensive and readily converted to a computer program.
- B. It is systematic and identifies ways to avoid failures.
- C. It is easy to perform and does not require a computer program.
- D. It is bottom-up and provides detailed accident scenario.
Answer: B
NEW QUESTION 76
Specifically, up-time ratio is a measure of:
Response:
- A. Hazard rate.
- B. Availability.
- C. Maintenance action rate.
- D. Maintainability
Answer: B
NEW QUESTION 77
The purpose of a failure reporting, analysis and corrective action system(FRACAS) includes which two of the following?
I. Provide a closed loop failure reporting system.
II. Provide initial robust product designs.
III. Provide management with derating methods and principles.
IV. Provide a failure analysis and corrective action vehicle.
Response:
- A. II, IV
- B. II, III
- C. I, II
- D. I, IV
Answer: D
NEW QUESTION 78
In order to attain a high order of series reliability:
Response:
- A. The number of parts must be kept to a minimum.
- B. The number of parts is insignificant if each part has a reliability of 99 percent of more.
- C. The number of parts must have a low failure variance.
- D. The number of parts must be increased.
Answer: A
NEW QUESTION 79
Design reviews should have sufficient information available to make their meetings worthwhile. Formal controls (specifications, drawing controls, etc.) should begin with the first design review. This approach is referred to as:
Response:
- A. Configuration control.
- B. Standards organization.
- C. Quality systems documentation.
- D. Documentation control.
Answer: A
NEW QUESTION 80
Nonrelevant failures include all of the following EXCEPT:
Response:
- A. Operating adjustment failures.
- B. Human error failures.
- C. Mishandling failures
- D. Unverified failures.
Answer: D
NEW QUESTION 81
A randomly failing component is tested to r failures, and n observations are made. Degrees of freedom for calculating confidence limits on the mean should be:
Response:
- A. n - 1
- B. n
- C. 2r + 2
- D. 2r
Answer: D
NEW QUESTION 82
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?
Response:
- A. The senior decision maker.
- B. The design review chairman.
- C. The reliability engineer.
- D. The design engineer.
Answer: D
NEW QUESTION 83
A satellite has two redundant control systems, each has a failure rate (lambda) = 1×10 -6 failures/hour. If one of the systems fails, the failure rate for the remaining system increases to 2×10 -5 failures/hour.
What is the reliability of the redundant control systems at 175,000 hours?
Response:
- A. 0.2507
- B. 0.690
- C. 0.7796
- D. 0.8609
Answer: C
NEW QUESTION 84
All of the following statements are TRUE about confidence interval EXCEPT Response:
- A. A larger sample size would yield a smaller width
- B. The width indicate the uncertainty in estimates.
- C. A smaller sample size would yield a larger width
- D. The width does not depend on the confidence level.
Answer: D
NEW QUESTION 85
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:
- A. Inspect the majority of parts produced.
- B. Discover every failure mode.
- C. Provide a safe testing environment.
- D. Estimate MTBF values.
Answer: A
NEW QUESTION 86
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. 0.00258 f/hr.
- B. 0.00913 f/hr.
- C. 0.00192 f/hr
- D. 0.00671 f/hr
Answer: A
NEW QUESTION 87
The maintenance action rate (MAR) may be mandated by contract. If an extruder is run continuously and experiences 24 maintenance actions (downtown) in one year, what is the MAR?
Response:
- A. 0.0417 actions/hr
- B. 0.00135 actions/hr.
- C. 0.0027 acions/hr.
- D. 0.0054 actions/hr.
Answer: C
NEW QUESTION 88
Which of the following action will help eliminate the effects of extraneous factors in a designed experiment?
Response:
- A. Repeating the experiment under different conditions.
- B. Randomizing the experiment.
- C. Fractionating the experiment.
- D. Selecting factor levels.
Answer: B
NEW QUESTION 89
When a bathtub curve is used, one characteristic of the flat center portion of the curve is that during this period Response:
- A. The time of the next failure is predictable from the time of the last failure.
- B. There can be only one type of failure in the system.
- C. The reliability of the system can be expressed as an exponential function
- D. The equipment can be considered highly reliable.
Answer: C
NEW QUESTION 90
What is the factor of safety for the material?
Response:
- A. 1.50
- B. 0.75
- C. 1.33
- D. 0.66
Answer: C
NEW QUESTION 91
Failure data are analyzed and a proportion of items survive to the end of the test. Data on these types of samples are referred as:
Response:
- A. Parameter data
- B. Control data
- C. Censored Data.
- D. Non-parameter data.
Answer: C
NEW QUESTION 92
Which of the following is NOT considered good practice in reliability design?
Response:
- A. Simplifying item configuration.
- B. Using proven parts.
- C. Using failure mode and effects analysis (FMEA).
- D. Using series design.
Answer: D
NEW QUESTION 93
Which of the following is NOT a major consideration in performing a human factors analysis?
Response:
- A. Latent path analysis.
- B. Conventional user expectations.
- C. Ergonomic evaluation.
- D. Hazard analysis.
Answer: A
NEW QUESTION 94
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