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ASQ CRE Exam Syllabus Topics:

ASQ Certified Reliability Engineer (CRE) Sample Questions:

1. The use of PERT requires:
Response:

A) Time estimates for each activity in the network.
B) The critical path to be known in advance.
C) Slack times to be added to the critical path.
D) Less data than a Gantt chart.

2. Combined environmental reliability testing allows for a:
Response:

A) Multiple stress test
B) Use of a common acceleration factor for relative MTTF from its accelerated condition to its normal condition
C) Method for certification of test results.
D) Range of test conditions in excess of design tolerances

3. A system has components connected in active parallel. At least n - 1 of the components must operate for the system to function properly. Suppose the time to failure of each component has an exponential distribution with the same failure rate λ. The mean time to failure of this system is:
Response:

A) 1/(n - 1) λ
B) (2n - 1)/n(n - 1) λ.
C) 2/(n - 1) λ
D) (n - 1)/n 2 λ

4. Preventive maintenance programs are MOST effective when
Response:

A) The hazard rate is constant.
B) The hazard rate is increasing.
C) The hazard rate is decreasing.
D) Random failure occur

5. An aggregate preventive maintenance program can greatly increase the overall availability of a system because of the Response:

A) Improved control of inventory levels.
B) Emphasis on budgeting operational expenses.
C) Ability to improve product safety.
D) Ability to improve observed reliability.

Solutions: