[Oct 31, 2021] Genuine CRE Exam Dumps New 2021 ASQ Pratice Exam
New 2021 Realistic CRE Dumps Test Engine Exam Questions in here
NEW QUESTION 19
A system is made up to several identical parts of varying age. The reliability of each of these parts is given by R( t) = e - λt where λ is the failure rate in failures per hour and t is the operating time in hours.
Which of the following is TRUE about the reliability of these parts?
Response:
- A. The oldest part is expected to fail first.
- B. Each of the parts has the same probability of failing during a given period of time.
- C. The failure rate of the system is given by the product of the individual part reliabilities.
- D. The failure rate of the system is given by the product of the individual part failure rates.
Answer: B
NEW QUESTION 20
Derating a component to 50 percent of its operating value will generally decrease its failure rate by a factor of:
Response:
- A. Less than 10 percent.
- B. Greater than 30 percent.
- C. Greater than 10 percent but less than 30 percent.
- D. Greater than 50 percent.
Answer: B
NEW QUESTION 21
A failure reporting and corrective action system should ensure that all steps are taken to:
Response:
- A. Record costs associated with the corrective action.
- B. Determine responsibilities for failures.
- C. Define the goals of the FRACAS team.
- D. Identify, investigate and analyze failures.
Answer: D
NEW QUESTION 22
Given the sample data: 5, 15, 10, 7, 20. What is the unbiased estimator of the sample variance?
Response:
- A. 46.62
- B. 37.30
- C. 27.50
- D. 29.84
Answer: B
NEW QUESTION 23
Which of the following techniques is NOT used when derating parts to enhance their overall reliability?
Response:
- A. Lower power dissipation.
- B. Use of 100% rating.
- C. Derating for temperature.
- D. Derating for stress.
Answer: B
NEW QUESTION 24
The techniques of design control are:
Response:
- A. Unique to the aerospace industry.
- B. Limited to hardware-manufacturing enterprises.
- C. Too expensive for general application.
- D. Applicable generally throughout industry.
Answer: D
NEW QUESTION 25
The department having the authority to sign all deviations pertaining to the design of the product is normally:
Response:
- A. Manufacturing engineering.
- B. Contractual
- C. Inspection
- D. Design engineering.
Answer: D
NEW QUESTION 26
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 27
For a reliability plan to be most effective, the reliability tasks should be integrated with which of the following plan?
Response:
- A. Reliability centered maintenance.
- B. Product distribution
- C. Product design and development.
- D. Product sales.
Answer: C
NEW QUESTION 28
The variations which the normal distribution curve describes are due to:
Response:
- A. Non assignable causes.
- B. Assignable causes
- C. Catastrophic failure
- D. Degradation failure.
Answer: A
NEW QUESTION 29
The prediction technique has obviously not always been effective quantitatively. There is often a wide difference between actual reliability and predicted reliability. Nevertheless, the reliability prediction technique permits:
Response:
- A. Indicating which department is to blame.
- B. Estimating how good the product really is.
- C. Spotlighting what has gone wrong with the program.
- D. Separating out "the vital few" from the "trivial many".
Answer: D
NEW QUESTION 30
Reliability objectives and requirements should be set in which of the following life cycle phases?
Response:
- A. Concept and design.
- B. Validation and test.
- C. Full scale design and development.
- D. Operation and repair.
Answer: A
NEW QUESTION 31
Combined environmental reliability testing allows for a:
Response:
- A. Method for certification of test results.
- B. Range of test conditions in excess of design tolerances
- C. Use of a common acceleration factor for relative MTTF from its accelerated condition to its normal condition
- D. Multiple stress test
Answer: D
NEW QUESTION 32
The general public is willing to accept some risks in their work environment. A study has indicated that an accident fatality at which of the following levels is NOT of great concern to the average person?
Response:
- A. 1 per 1000 per persons per year.
- B. 1 per 100 per persons per year.
- C. 1 per 100,000 per persons per year.
- D. 1 per 10,000 per persons per year.
Answer: C
NEW QUESTION 33
What is the reliability of the power switching system schematic on the left after 30,000 hours ? The electric utility primary power system (A) has a failure rate of 0.00001 failure/hour.
The motor generator backup system (B) has a failure rate of 0.0007 failure/hour. The standby system has an imperfect switch with 0.90 reliability per operation.
Response:
- A. 0.87
- B. 0.83
- C. 0.75
- D. 0.80
Answer: C
NEW QUESTION 34
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 35
Given mean-time-to-failure of 200 hours for each of two components, what is the probability of system failure if both components operate in parallel for one hour?
Response:
- A. P = 0.010
- B. P = 0.005
- C. P = 0.000025
- D. P = 0.001
Answer: C
NEW QUESTION 36
In general, one should select the highest component parameter ratings feasible so that:
I. Failure rates may be minimized.
II. Probability of secondary failure is minimized.
III. Safety margins are offered against unforeseen transients.
Response:
- A. I and III only
- B. I, II and III
- C. I only
- D. I and II only
Answer: B
NEW QUESTION 37
A resistor is rated at 1 watt. One example of using this resistor in a derated condition is using:
Response:
- A. Two of the resistors in series.
- B. The resistor in a 2 watt application.
- C. The resistor in a 0.5 watt application.
- D. The resistor as a standby unit.
Answer: C
NEW QUESTION 38
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