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ASQ CRE Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Life Data Analysis and Testing | - Accelerated life testing - Weibull analysis and life data modeling |
| Topic 2: Failure Analysis and Corrective Action | - Root cause analysis and corrective actions - Failure mode and effects analysis (FMEA) |
| Topic 3: Maintainability and Availability | - Maintainability engineering concepts - Availability modeling and analysis |
| Topic 4: Reliability Management | - Reliability program planning and management - Risk management and decision analysis |
| Topic 5: Reliability Engineering Principles | - System reliability evaluation - Reliability modeling and prediction |
| Topic 6: Probability and Statistics | - Probability distributions and statistical inference - Regression and data analysis methods |
| Topic 7: Design and Development | - Design for reliability - Tolerance analysis and robustness design |
ASQ Certified Reliability Engineer (CRE) Sample Questions:
1. A reliability test was terminated after 171 hours based upon a pre-established plan. An estimate of mean-time-to-failure of 57 hours was obtained. The lower 95 percent confidence bound on the true population mean-time-to-failure is:
Response:
A) 22 hours.
B) 125 hours.
C) 27 hours.
D) 11 hours.
2. Which of the following is (are) NOT (a) failure mechanism (s)?
l. Cracked
ll. Over-stressing.
lll. Inadequate maintenance instructions.
lV. Oxidized.
Response:
A) l and lV
B) lll
C) ll and lll
D) l
3. Which of the following statements is TRUE nonrepairable items?
Response:
A) Reliability is survival probability over the expected life of the items when only one failure can occur
B) Their primary unit of measure is mean time to replace.
C) Reliability is the survival probability that failure of the items will not occur during the period of interest when more than one failure can occur
D) Their primary unit of measure is failure severity.
4. In a life test of 4 batteries, failures were observed after 10, 30, and 40 hours. The 4th battery was tested
75 hours without failure, at which time the test was terminated.
What are the estimated Mean-Time-To-Failure (theta) and failure rate (lambda)?
Response:
A) Estimated MTTF = 14; Failure rate = .017
B) Estimated MTTF = .019; Failure rate = 52
C) Estimated MTTF = 52; Failure rate = .019
D) Estimated MTTF = 27; Failure rate = .038
5. Which of the following is a primary concern for a reliability engineer who uses publicly available sources for mechanical part-failure rates?
Response:
A) Assuring that the data are in compliance with ISO standards.
B) Recognizing that the quantity of such data is unlimited.
C) Meeting parts-count requirements
D) Finding appropriate data for each application.
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: A | Question # 3 Answer: A | Question # 4 Answer: C | Question # 5 Answer: D |
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