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NEW QUESTION 179
The main purpose of environmental stress screening is which of the following?
Response:
- A. To subject parts to extremes
- B. To eliminate infant mortality failures.
- C. To assist in the selection of standardized parts.
- D. To eliminate supplier inspections.
Answer: B
NEW QUESTION 180
Specifications are written on parts to:
I. Enable procurement to buy usable parts.
II. Establish mechanical, functional, environmental and reliability requirements.
III. Provide inspection criteria.
Response:
- A. All of the above.
- B. II
- C. I and II
- D. I
Answer: A
NEW QUESTION 181
System and cost effectiveness analysis outputs:
Response:
- A. Will not guide preliminary design features.
- B. Do not guide trade-off decisions.
- C. In most cases will not identify the degree to which innovations should be pursued.
- D. Can be used to determine the best balance of system performance, cost and schedule.
Answer: D
NEW QUESTION 182
Which of the following statement is TRUE about maintainability?
Response:
- A. It is primarily a field service issue.
- B. It should be initiated during the design stage.
- C. It should be initiated during the logistics review.
- D. It is primarily a contractual requirements.
Answer: B
NEW QUESTION 183
For equipment consisting of three components connected in series whose respective reliabilities are
0.95, 0.94, 0.96, which could be used to calculate total probability?
Response:
- A. Bayes Theorem.
- B. Exponential failure law.
- C. Product rule.
- D. Addition law.
Answer: C
NEW QUESTION 184
A system is defined by the following reliability block diagram.
Which of the following block diagrams MOST simply represents the system reliability when Unit C is functioning?
Response:
- A. option B
- B. option A
- C. option D
- D. option C
Answer: D
NEW QUESTION 185
Which of the following is a basic element in the corrective action process?
Response:
- A. Identify failure for trend analysis.
- B. Investigate problems to determine root causes.
- C. Apply Pareto analysis to failure.
- D. Limit manufacturing expenses
Answer: B
NEW QUESTION 186
Which of the following is the BEST method of selecting parts of a new product?
Response:
- A. Using those that represent that latest technology.
- B. Performing incoming inspection.
- C. Drawing them from an approved parts list
- D. Using only those that have a high reliability.
Answer: C
NEW QUESTION 187
Weibull analysis is a way to quickly and easily analyze field data or interval test data. The limits of the use of this technique include having a good estimate for the:
Response:
- A. MTBF.
- B. Shape parameter.
- C. Expected life.
- D. Average quality of the production lots.
Answer: B
NEW QUESTION 188
Which of the following forms of reliability data will BEST provide valuable information on product usage and reliability?
Response:
- A. Field support data
- B. In-house test results
- C. Quality control data.
- D. Independent lab results.
Answer: A
NEW QUESTION 189
A plastics plant operates 8 extruders producing plastic film. Production volume requirements cannot be met if less than 6 extruders are operating. There is a .30 probability that a machine stopping malfunction will occur.
What is the probability that 6 extruders can remain operating throughout the day?
Response:
- A. 0.5783
- B. 0.8059
- C. 0.5518
- D. 0.4482
Answer: C
NEW QUESTION 190
An undesired event in a system led to the below fault tree. Which of the following are the cut sets of the fault tree?
Response:
- A. {A}, {B1, B2}
- B. {A}, {A, B1}
- C. {A, B1} {A, B2}
- D. {A, B1}, {B2}
Answer: C
NEW QUESTION 191
A comprehensive failure analysis and corrective action feedback loop must determine:
I. What failed.
II. How it failed.
III. Why it failed.
Response:
- A. I, II and III
- B. I only
- C. I and II only
- D. II and III only
Answer: A
NEW QUESTION 192
When requesting "worst case" design analysis, you expect the reliability group to:
Response:
- A. Determine whether product requirements can be met with subassemblies assumed at their worst combination of tolerances.
- B. Assume all subassembly tolerances are at their maximum limit.
- C. Analyze the worst rejects.
- D. Analyze only those products failing to meet specification requirements.
Answer: A
NEW QUESTION 193
The following fault tree diagram was developed by a team.
The probability are as follow:
A1 = 0.90 B1 = 0.90 C1 = 0.80
A2 = 0.80 B3 = 0.80 C2 = 0.70
A4 = 0.70
The likelihood that the system fault will occur is
Response:
- A. 0.3686
- B. 0.4977
- C. 0.5034
- D. 0.3073
Answer: B
NEW QUESTION 194
Which of the following is the key component in continuously providing a reliable product?
Response:
- A. Adequately train the work force.
- B. Scheduled equipment maintenance actions.
- C. Improve supplier acceptance testing.
- D. Reduce product variability.
Answer: D
NEW QUESTION 195
Basic sources of reliability data are:
I. In-plant testing.
II. Field testing.
III. Operation by user.
Response:
- A. I and III only
- B. I, II, and III
- C. I and II only
- D. II and III only
Answer: B
NEW QUESTION 196
Which process has as its principle parts
- Defining the system.
- Establishing the reliability model.
- Assigning failure rates to the equipment involved.
- Computing the reliability for each function and for the system.
Response:
- A. Demonstrating the reliability.
- B. Design review.
- C. Predicting reliability.
- D. Defining the program plan.
Answer: C
NEW QUESTION 197
The comparative financial effects of reliability over the designed operating time T of two systems built to perform the same function can be obtained by comparing the
I. Failure rates.
II. Operating life of each system.
III. Cost of each system (including repair, replacement, and loss).
Response:
- A. I and III only
- B. I, II and III
- C. II and III only
- D. II only
Answer: B
NEW QUESTION 198
The ratio of the variances of two independent samples from normal distributions with a common true variance has what type of distribution?
Response:
- A. chi-square.
- B. F test
- C. t
- D. Beta
Answer: B
NEW QUESTION 199
Equivalence class partitioning is:
Response:
- A. A black-box method that divides program functions into related groups for testing.
- B. A white-box method that divides control paths into dependent and independent categories for testing.
- C. A black-box method that divides the inputs to a program into classes from which test cases can be derived.
- D. A white-box method that divides errors into classes to reduce the amount of testing required.
Answer: C
NEW QUESTION 200
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. Adequate space for hand-written comments and explanations.
- C. Identification of customer symptoms to explain the cause or problem.
- D. Common failure modes and corrective actions included as a check-off.
Answer: D
NEW QUESTION 201
In the binomial expression:
Response:
- A. The sum of the exponents of all the terms after expansion is equal to the sample size.
- B. The sum of the exponents after expansion has no relation to the sample size.
- C. The sum of the coefficients of each term after expansion is equal to the sample size.
- D. The sum of the exponents of each term after expansion is equal to the sample size.
Answer: D
NEW QUESTION 202
Human will perform more reliably if:
I. They understand what is required and why.
II. The task is challenging and complex.
III. Pressure is applied which penalizes failure.
IV. There are incentives for quality.
Response:
- A. I and III only
- B. I and IV only
- C. I and II only
- D. II and IV only
Answer: B
NEW QUESTION 203
A company is in a multi-products, competitive market. Which of the following is the MOST appropriate strategy to help capture the maximum market share?
Response:
- A. Increasing the reliability of current product
- B. Reducing cycle time while introducing new, reliable products.
- C. Performing aggressive field-testing.
- D. Improving the capacity of manufacturing process.
Answer: B
NEW QUESTION 204
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