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NEW QUESTION 135
The design function which assigns probability of failures between components or subsystems is called:
Response:
- A. Confidence
- B. Qualification
- C. Apportionment
- D. Significance
Answer: C
NEW QUESTION 136
The two principal measures of failure during risk assessment are which of the following?
Response:
- A. Failure mode and failure mechanism.
- B. Failure severity and failure probability.
- C. Failure method and failure mode.
- D. Failure analysis and failure effects.
Answer: B
NEW QUESTION 137
Which of the following statements is TRUE about human factor points?
Response:
- A. They are not necessary until the product has been designed and field tested.
- B. They are most costly to incorporate during the concept phase.
- C. They generally cause schedule slippage whenever they are incorporated.
- D. They should be incorporated during the design phase.
Answer: D
NEW QUESTION 138
Reliability prediction is:
Response:
- A. More important than reliability attained in the field.
- B. A continuous process starting with paper predictions.
- C. A one time estimation process.
- D. A popular method as simulation theory.
Answer: B
NEW QUESTION 139
Design review should be a process to ensure and/or develop more reliable design. Which of the following person(s), if any, should work with the designer during the design process?
Response:
- A. Management team.
- B. Design supervisor.
- C. Reliability engineer.
- D. Designer only
Answer: C
NEW QUESTION 140
For the ANOVA Table below, what is the Fcal statistic?
Response:
- A. 9.44
- B. 1.58
- C. 5.64
- D. 5.97
Answer: D
NEW QUESTION 141
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 142
Using complete field-based data, a reliability engineer has analyzed the reliability growth of a repairable system over the last 24 months. The analysis suggests a "no growth" condition, and that finding is reported to management.
Due to a pending multimillion dollar order, management requests that a line be drawn to show growth where none actually exists. The engineer's department manager directs the engineer to comply with management request.
The system is released without improvements and the company receives the multimillion dollar order from an external customer. The customer then requests evidence of the reliability growth. Which of the following actions by the engineer would be MOST appropriat?
Response:
- A. Revisit the original data and project artificial reliability growth to satisfy the customer's request.
- B. Arrange a meeting with the customer and discuss all past occurrences
- C. Ask the department manager to respond to the customer's request.
- D. Arrange a meeting with the department manager and upper management to discuss the reliability report.
Answer: D
NEW QUESTION 143
Arrange the following failure data steps into the correct sequence from start to finish.
I. Verify the failure.
II. Identify and control the failure.
III. Investigate the failure.
IV. Provide corrective action and follow up.
V. Report the fail.
Response:
- A. I, II, V, III, IV
- B. II, V, I, III, IV
- C. III, II, V, I, IV
- D. I, II, III, IV, V
Answer: B
NEW QUESTION 144
Which of the following action will help eliminate the effects of extraneous factors in a designed experiment?
Response:
- A. Repeating the experiment under different conditions.
- B. Randomizing the experiment.
- C. Fractionating the experiment.
- D. Selecting factor levels.
Answer: B
NEW QUESTION 145
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 146
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 147
In 4 flips of a coin the probability of two heads and two tails (in any order) is:
Response:
- A. 1/2
- B. 7/16
- C. 9/16
- D. 3/8
Answer: D
NEW QUESTION 148
Which of these terms is commonly used as the probability of rejecting material produced at an unacceptable quality level?
Response:
- A. 1 - α only
- B. β only
- C. 1 - β only
- D. α only
Answer: C
NEW QUESTION 149
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. Shape parameter.
- B. MTBF.
- C. Expected life.
- D. Average quality of the production lots.
Answer: A
NEW QUESTION 150
In the binomial expression:
Response:
- A. The sum of the exponents of each term after expansion is equal to the sample size.
- B. The sum of the coefficients of each term after expansion is equal to the sample size.
- C. The sum of the exponents of all the terms after expansion is equal to the sample size.
- D. The sum of the exponents after expansion has no relation to the sample size.
Answer: A
NEW QUESTION 151
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 152
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. All of the above.
- B. II and III
- C. I
- D. II
Answer: D
NEW QUESTION 153
A fault tree analysis (FTA) is a design analysis technique constructed from a "top event". A basic problem with this technique in comparison to a FMECA would be which of the following?
Response:
- A. Only electronic systems can be analyzed.
- B. Assigning probabilities to the various events.
- C. Needing a different FTA for each defined top event.
- D. Understanding logical symbols.
Answer: C
NEW QUESTION 154
What is this system's reliability at 700 hours?
Component failure data is : - Failure rate of A = 0.0007 failures/hr - Reliability of B = 0.92 - MTTF of C =
1400 hours - Reliability of D = 0.85.
Response:
- A. 0.994
- B. 0.952
- C. 0.998
- D. 0.986
Answer: C
NEW QUESTION 155
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 156
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