Practice Examples and Dumps & Tips for 2022 Latest CRE Valid Tests Dumps
Latest [Oct 16, 2022] 100% Passing Guarantee - Brilliant CRE Exam Questions PDF
NEW QUESTION 127
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. 0.5034
- B. 0.3686
- C. 0.3073
- D. 0.4977
Answer: D
NEW QUESTION 128
In 4 flips of a coin the probability of two heads and two tails (in any order) is:
Response:
- A. 9/16
- B. 7/16
- C. 1/2
- D. 3/8
Answer: D
NEW QUESTION 129
Who should be chairperson of a design review committee?
Response:
- A. The chief designer.
- B. The person best able to make decisions on a design.
- C. A senior member of management.
- D. The reliability engineer.
Answer: B
NEW QUESTION 130
In the House of Quality, the principal matrix shows the relationship between:
Response:
- A. Quality Requirements and Quality Inspection.
- B. Specifications and Results.
- C. Reliability Results and Time.
- D. Wants and Hows.
Answer: D
NEW QUESTION 131
Pascal's triangle presents a simple means of determining which of the various terms of the binomial expansion?
Response:
- A. Permutations
- B. Exponents
- C. Combinations
- D. Coefficients
Answer: D
NEW QUESTION 132
A Reliability Engineering Department is conducting a training needs assessment. Which of these techniques are used for a training needs assessment?
I. Personal observations.
II. External customer surveys.
III. Costs analysis.
IV. Work sampling.
V. Interviews.
Response:
- A. I, II, III, IV and V
- B. I, IV and V only
- C. I, III, IV and V only
- D. II, III and IV only
Answer: D
NEW QUESTION 133
The software test design method that involves seeding errors into a program is known is:
Response:
- A. Customer defect reports.
- B. Equivalent class partitioning.
- C. Fault insertion and error handling.
- D. Test cases.
Answer: C
NEW QUESTION 134
Laboratory tests of a new polymer prototype yielded the following proportions of a critical compound:
4.2 ppm, 4.1 ppm, 4.7 ppm, 4.9 ppm, 5.3 ppm
What is the sample standard deviation?
Response:
- A. 0.475
- B. 0.464
- C. 0.445
- D. 0.498
Answer: D
NEW QUESTION 135
Which of the following techniques would you use to determine the cost effectiveness of a new production machine, amortized over 5 years of expected useful life ? Current warranty costs are $50,000/year for this production line.
The new machine plus associated costs will require a $150,000 investment, but warranty costs are projected to drop to $30,000/year. Consider that administrative overhead is 25%, the profit coefficient is 8%, and present worth is subject to 5% discounting.
Response:
- A. Return on investment analysis
- B. Summed costs comparison.
- C. Single payment compound amount factor analysis.
- D. Discounted net return analysis.
Answer: D
NEW QUESTION 136
The BEST way to set an overall reliability goal is to:
Response:
- A. Write a specification calling for a product to have high reliability and incorporate it into a contract.
- B. Insist that the goal be expressed in terms of mean-time-between-failures for all components and assemblies.
- C. Indicate who would be at fault if the desired reliability is not obtained during the warranty.
- D. Put down specific numerical requirements for reliability statements of operating environments, and a definition of successful product performance.
Answer: D
NEW QUESTION 137
Given a system requirement of maintainability (MTTR) of 4.7 hours. There are 5 devices in series with the following individual failure rates and MTTR.
Determine the K factor.
Response:
- A. 0.82
- B. 1.06
- C. 0.94
- D. 0.87
Answer: A
NEW QUESTION 138
The design function which assigns probability of failures between components or subsystems is called:
Response:
- A. Confidence
- B. Significance
- C. Qualification
- D. Apportionment
Answer: D
NEW QUESTION 139
Time-to-market can be reduced MOST directly through the use of:
Response:
- A. Concurrent engineering
- B. Reliability centered maintenance (RCM)
- C. Highly accelerated stress screening (HASS)
- D. Field testing.
Answer: A
NEW QUESTION 140
Which of the following statistical distributions can be used to compare sample means?
Response:
- A. Exponential
- B. Chi-square.
- C. Normal.
- D. t test.
Answer: D
NEW QUESTION 141
What is meant by catastrophic failure?
I. A gradual change in the operating characteristics of an item resulting in no loss of useful performance.
II. A sudden change in the operating characteristics of an item resulting in complete loss of useful performance.
III. A gradual change in the operating characteristics of an item resulting in complete loss of performance.
Response:
- A. I
- B. All of the above.
- C. II
- D. II and III
Answer: C
NEW QUESTION 142
Highly repetitive operations should be assigned to:
Response:
- A. An operator.
- B. A machine and operator performing the same task alternately.
- C. A machine.
- D. An operator assisted by a computer.
Answer: C
NEW QUESTION 143
If a test shows three failures in 50 hours of operation, how many failures will it show in 1000 hours of operation if the failure rate is constant?
Response:
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION 144
Which of the following is NOT an objective of a data collection program?
Response:
- A. To validate vendor supplied items.
- B. To demonstrate reliability to customers.
- C. To demonstrate internal reliability.
- D. To produce reliability reports.
Answer: D
NEW QUESTION 145
In general, reliability testing is performed for which of the following reasons?
I. To detect unanticipated failure modes.
II. To compare estimated failure rates to actual failure rates.
III. To monitor reliability growth over time.
IV. To meet or exceed customer expectations.
Response:
- A. I, II, III and IV
- B. II and IV only
- C. I, II and III only
- D. I and III only
Answer: A
NEW QUESTION 146
The use of plug-in devices improves all of the following EXCEPT:
Response:
- A. Design reliability.
- B. Interchangeability
- C. Fault isolation time.
- D. Mean time to repair.
Answer: A
NEW QUESTION 147
Which mathematical method provides a solution, has a time dimension and is solved numerically?
Response:
- A. Simulation model.
- B. Analytic solution.
- C. None of the above.
- D. Strength and stress model.
Answer: A
NEW QUESTION 148
A "fail-safe" requirement means:
Response:
- A. The system will fall in a safe state.
- B. The system has safety devices.
- C. The safety systems cannot fail.
- D. The system is safe from failure.
Answer: A
NEW QUESTION 149
Censoring of data occurs when
Response:
- A. Product data are sequenced and questionable
- B. Data collection is time-truncated.
- C. Questionable methods of data collection are used.
- D. Product data are considered biased.
Answer: B
NEW QUESTION 150
The margin of safety in a design is BEST described by which of the following statements?
Response:
- A. The ratio of the mean load to the mean strength.
- B. The mean load variance divided by the mean strength variance times 100.
- C. The ratio of the difference between the mean strength and the mean load.
- D. The ratio of the variance of the stress to the strength.
Answer: C
NEW QUESTION 151
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