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NEW QUESTION 143
Equivalence class partitioning is:
Response:
- A. A white-box method that divides errors into classes to reduce the amount of testing required.
- B. A black-box method that divides program functions into related groups for testing.
- C. A white-box method that divides control paths into dependent and independent categories for testing.
- D. A black-box method that divides the inputs to a program into classes from which test cases can be derived.
Answer: D
NEW QUESTION 144
Specifically, up-time ratio is a measure of:
Response:
- A. Hazard rate.
- B. Availability.
- C. Maintenance action rate.
- D. Maintainability
Answer: B
NEW QUESTION 145
In the Taguchi design methodology, what are noise factors?
Response:
- A. Factors that influence variation in the output
- B. Factors that impact tolerance design
- C. Factors that strongly influence the mean response.
- D. Factors that maximize parameter design.
Answer: A
NEW QUESTION 146
In the bath curve model, which one of the sections represents the period when catastrophic failure are likely to occur?
Response:
- A. All periods.
- B. Constant failure rate period.
- C. Infant mortality
- D. Wear out period.
Answer: A
NEW QUESTION 147
To which of the following types of systems is the concept mean-time-between-failures LEAST applicable?
Response:
- A. Rocket motor.
- B. Radar set.
- C. Power generator.
- D. Automobile.
Answer: A
NEW QUESTION 148
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 149
Failure rate is calculated as a:
Response:
- A. Reciprocal of the loss function.
- B. Probability of survival.
- C. Reciprocal of MTBF.
- D. Average of secondary failures.
Answer: C
NEW QUESTION 150
Which answer mathematically expresses the reliability of an active parallel system in which all component reliabilities are unequal?
Response:
- A. Rs = RaRbRc - (RaRb + RbRc + RaRc) + (Ra + Rb + Rc)
- B. Rs = Ra + Rb + Rc - RaRbRc
- C. Rs = [RaRbRc] / [Ra + Rb + Rc]
- D. Rs = [RaRbRc + RaRb + RbRc + RaRc ] / [Ra + Rb + Rc]
Answer: A
NEW QUESTION 151
The reliability growth factor is MOST important to consider in which of the following situation?
Response:
- A. Option D
- B. Option B
- C. Option A
- D. Option C
Answer: A
NEW QUESTION 152
The first phase in the operation life history of a population of product units is typically called:
Response:
- A. Wear out phase.
- B. Transition phase.
- C. Debugging phase.
- D. Chance failure phase.
Answer: C
NEW QUESTION 153
The primary aim of sequential-life testing is to determine
Response:
- A. Whether a lot meets the reliability goal.
- B. The probability density function of failures.
- C. The mean time between failures (MTBF).
- D. Whether the stress-level variation is significant.
Answer: A
NEW QUESTION 154
All of the following statements concerning statistical inference are true EXCEPT:
Response:
- A. Estimation is the process of analyzing a sample result in order to predict the value of the population parameter
- B. The confidence interval is normally the statistical tolerance limits of the population parameter.
- C. The point estimate is a single value used to estimate the population parameter.
- D. The confidence interval is a range of values which may include the true value of a population parameter.
Answer: B
NEW QUESTION 155
A field test may be considered satisfactory if:
Response:
- A. The reliability engineer can operate the equipment under all required conditions.
- B. The human factors engineers can operate the equipment under all required conditions.
- C. The design engineer can operate the equipment under all required conditions.
- D. Alternate operators can operate the equipment under all required conditions.
Answer: D
NEW QUESTION 156
One method of evaluating the design reliability is to analyze the design assuming the worst case. Which of the following techniques is NOT applicable for worst case analysis?
Response:
- A. Root-sum squared.
- B. Eyring model
- C. Extreme value
- D. Monte Carlo
Answer: B
NEW QUESTION 157
Which of the following is an appropriate use for experimental design?
Response:
- A. Establishing product requirements.
- B. Ensuring the robust design of a product.
- C. Analyzing customer complaint reports.
- D. Developing a fault-tree analysis.
Answer: B
NEW QUESTION 158
Which of following is NOT elements of risk priority number for FMEA?
Response:
- A. Catastrophic
- B. Detection
- C. Probability
- D. Severity
Answer: A
NEW QUESTION 159
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