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ASQ Certified Reliability Engineer (CRE) Sample Questions:
1. What is meant by "derating"?
I. The technique of using a part, component, or equipment under stress conditions considerably below rated values, to achieve a "reliability margin" in design.
II. The technique of using a part, component, or equipment under normal conditions to achieve a reliable product design.
III. The technique of using a part, component, or equipment below stress conditions to achieve a reliable product design.
Response:
A) I, II and III
B) I only
C) III only
D) I and III only
2. To be accurate and easy to use, field-failure reports should have all of the following attributes EXCEPT Response:
A) Commonly used data points presented in a check-off format.
B) Common failure modes and corrective actions included as a check-off.
C) Adequate space for hand-written comments and explanations.
D) Identification of customer symptoms to explain the cause or problem.
3. Given mean-time-to-failure of 200 hours for each of two components, what is the probability of system failure if both components operate in parallel for one hour?
Response:
A) P = 0.010
B) P = 0.000025
C) P = 0.005
D) P = 0.001
4. A redundant system has 5 standby parallel components, with perfect switching. If each of the components have a reliability of 0.03 failures/hour, what is the system's reliability at 20 hours?
Response:
A) 0.9432
B) 0.9997
C) 0.9999
D) 0.9232
5. It is reliability's job to see that all the tasks outlined in the reliability program are:
Response:
A) Carried out by reliability engineers.
B) Carried out by the department having the primary responsibility.
C) Making sure that quality control does its job.
D) Doing those jobs that the primary responsible departments are incapable of doing.
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: B | Question # 3 Answer: B | Question # 4 Answer: C | Question # 5 Answer: B |
By Andrea
