[Jan 08, 2022] New Real CRE Exam Dumps Questions
Pass Your CRE Exam Easily with Accurate Certified Reliability Engineer (CRE) PDF Questions
NEW QUESTION 62
What is the general use of an R chart?
Response:
- A. To determine if the process mean is in control.
- B. To determine if the process is in control.
- C. To determine the variance of the process.
- D. To determine if the process variance is in control.
Answer: D
NEW QUESTION 63
Which of the following is NOT an appropriate element in the definition of availability?
Response:
- A. The degree to which the system is in an operable and committable state at the start of a mission.
- B. The probability the system will perform its mission when required.
- C. The measure of the ability of a system to achieve mission objectives given the conditions during the mission.
- D. The ratio of the actual operating time to the scheduled operating time excluding PM.
Answer: D
NEW QUESTION 64
A primary purpose of burn-in testing of parts is to
Response:
- A. Measure the temperature/stress distribution of parts.
- B. Ensure that parts are safe.
- C. Ensure that parts operate at elevated temperatures.
- D. Eliminate substandard parts.
Answer: D
NEW QUESTION 65
What is the minimum number of failure free trips that one must make in their car to be at least 95% confident it is 95% reliable?
Response:
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION 66
When a bathtub curve is used, one characteristic of the flat center portion of the curve is that during this period Response:
- A. The time of the next failure is predictable from the time of the last failure.
- B. There can be only one type of failure in the system.
- C. The reliability of the system can be expressed as an exponential function
- D. The equipment can be considered highly reliable.
Answer: C
NEW QUESTION 67
Which of the following is the reason the bathtub curve has an increasing failure rate during the wear-out period?
Response:
- A. Design, materials and environment determine a limit of useful life.
- B. System effectiveness decreases rapidly at this stage.
- C. Design period does not project results past a predetermined time.
- D. Probability of failure is related to external factors that increase over time.
Answer: A
NEW QUESTION 68
Which of the following is NOT an objective of a data collection program?
Response:
- A. To produce reliability reports.
- B. To demonstrate internal reliability.
- C. To demonstrate reliability to customers.
- D. To validate vendor supplied items.
Answer: A
NEW QUESTION 69
The purpose of a failure reporting, analysis and corrective action system(FRACAS) includes which two of the following?
I. Provide a closed loop failure reporting system.
II. Provide initial robust product designs.
III. Provide management with derating methods and principles.
IV. Provide a failure analysis and corrective action vehicle.
Response:
- A. II, IV
- B. II, III
- C. I, II
- D. I, IV
Answer: D
NEW QUESTION 70
When testing is establish failure rate data and reliability predictions, which of the following is NOT normally a feasible acceleration factor with respect to rated conditions?
Response:
- A. Higher temperature.
- B. Greater humidity.
- C. Longer time.
- D. Higher voltage.
Answer: C
NEW QUESTION 71
The margin of safety in a design is BEST described by which of the following statements?
Response:
- A. The mean load variance divided by the mean strength variance times 100.
- B. The ratio of the variance of the stress to the strength.
- C. The ratio of the mean load to the mean strength.
- D. The ratio of the difference between the mean strength and the mean load.
Answer: D
NEW QUESTION 72
Production error by human operators may be caused by:
I. Inadequate work space.
II. Inadequate job planning information.
III. Poor environmental conditions.
Response:
- A. I and II
- B. All of the above
- C. II
- D. I
Answer: B
NEW QUESTION 73
Which of the following techniques is MOST beneficial in tracking a process to determine whether corrective action should be taken?
Response:
- A. Control charting.
- B. Trend analysis.
- C. Time series plotting.
- D. Pareto analysis.
Answer: A
NEW QUESTION 74
A key distinction between Taguchi designed experiments and classical designed experiments is that Taguchi designs Response:
- A. Do not rely on randomization and classical experiments do.
- B. Are not orthogonal and classical designs are.
- C. Include 2-level factors and classical design do not.
- D. Are full-factorial and classical designs are not.
Answer: A
NEW QUESTION 75
What is the failure rate of a system composed of three components, each of which can cause a system failure, and which have the following information?
Response:
- A. 0.00258 f/hr.
- B. 0.00913 f/hr.
- C. 0.00192 f/hr
- D. 0.00671 f/hr
Answer: A
NEW QUESTION 76
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, IV and V only
- B. II, III and IV only
- C. I, III, IV and V only
- D. I, II, III, IV and V
Answer: B
NEW QUESTION 77
When a defense is prepared for a product liability action, all of the following would be considered elements of the assumption of risk the plaintiff must have EXCEPT:
Response:
- A. Understood the consequence of the risk.
- B. Had knowledge of the risk
- C. Contributed to the injury through negligence.
- D. Voluntarily undertaken the risk.
Answer: C
NEW QUESTION 78
According to the Reliability Analysis Center, which of the following design objectives is NOT supported by reliability and maintainability contributing tasks?
Response:
- A. Determine the feasibility of consistent product manufacture.
- B. Understand the impacts on design performance.
- C. Design validation.
- D. Use of proper parts and correct application.
Answer: A
NEW QUESTION 79
Product safety standards do NOT include:
Response:
- A. Performance requirements for products.
- B. Requirements for general, equipment and component safety.
- C. Evaluation requirements for product safety testing.
- D. Product requirements laws passed by government
Answer: A
NEW QUESTION 80
An intelligent and good reliability program plan is one that:
Response:
- A. Delineates the responsibilities and interfaces in as general a manner as possible.
- B. Emphasize the planning activities over the control activities.
- C. Defines in detail the complementary activities necessary for improving and assessing the reliability parameter.
- D. Retains flexibility by not formalizing reliability activities so that it cannot be tied down contractually.
Answer: C
NEW QUESTION 81
A substantial fraction of the usual design effort need NOT be devoted to a reliability program.:
Response:
- A. When high reliability is not specified.
- B. When high reliability is specified.
- C. When time is limited.
- D. When the equipment is complex.
Answer: A
NEW QUESTION 82
A full factorial design of experiments has four factors. The first factor has two levels, the second factor has three levels, the third factor has two levels, and the final factor has four levels. How many runs are required for this analysis?
Response:
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION 83
Failure modes and effects analysis involves what activity?
Response:
- A. The study of the physics of failure to determine exactly how a product fails and what causes the failure.
- B. A study of the probability of success in a given time period.
- C. The expected number of failures in a given time interval.
- D. The determination of the probability of failure in a specified period of time.
Answer: A
NEW QUESTION 84
Large power generating stations frequently have auxiliary turbine generators operating at speed. They do not produce power but act as back-ups. This type of redundancy is known as:
Response:
- A. Shared load parallel system.
- B. Active parallel system.
- C. Stand-by parallel system.
- D. Bayes' theorem application.
Answer: C
NEW QUESTION 85
Your company has just installed a new computer data entry system and you must determine the new input error rates. Management requires you to report the error rate within 0.5%, at a 95% confidence level.
What sample size do you need if the population standard deviation is 1.2%?
Response:
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION 86
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. III only
- C. I and III only
- D. I only
Answer: D
NEW QUESTION 87
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