[2023] Free CRE Exam Dumps to Pass Exam Easily [Q164-Q188]

[2023] Free CRE Exam Dumps to Pass Exam Easily

CRE Exam Dumps, CRE Practice Test Questions

NEW QUESTION 164
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. 0.498
B. 0.475
C. 0.445
D. 0.464

Answer: A

NEW QUESTION 165
The investment in automated test equipment is often justified under which of the following circumstances Response:

A. Traceable records are required.
B. Repair times must be short.
C. Conformance records are required.
D. Numerous tests must be performed.

Answer: D

NEW QUESTION 166
Which of the following tools are classified as structured root cause analysis tools?
I. 5P.
II. 7D, 8D or 9D problem solving.
III. Management oversight and risk tree analysis (MORT).
IV. Human performance evaluation system (HPE)
Response:

A. I, II and IV only
B. II and III only
C. I only
D. I, II, III and IV

Answer: D

NEW QUESTION 167
Derating parts in specific applications is performed in order to:
Response:

A. Show which parts are inferior in design.
B. Determine the stress ratios.
C. Establish a preferred parts list.
D. Lower the stress limits to lower failure rates.

Answer: D

NEW QUESTION 168
Maintenance times on simple with straightforward repair will fit which of the following distributions?
Response:

A. Lognormal.
B. Exponential.
C. Normal.
D. Geometric.

Answer: C

NEW QUESTION 169
Which of the following will provide the BEST information for determining the value of reliability activities?
Response:

A. Return on investment.
B. Weibull analysis report
C. Corrective action closure reports.
D. Daily SPC report.

Answer: A

NEW QUESTION 170
A system is turned off every 30 days for 5 minutes for on line maintenance. If the probability of system failure due to hardware failure is negligible, what is the system's unavailability?
Response:

A. 1.157 × 10 -4
B. 0.999
C. 3.472 × 10 -4
D. 0.0333

Answer: A

NEW QUESTION 171
What percentage of the material is expected to fail?
Response:

A. 1.4%
B. 8.1%
C. 2.3%
D. 2.0%

Answer: C

NEW QUESTION 172
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. I, IV
C. II, III
D. I, II

Answer: B

NEW QUESTION 173
Which answer is the expected value of the Poisson distribution shown below?

Response:

A. μe - μ
B. e - μ
C. μ 2
D. μ

Answer: D

NEW QUESTION 174
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. Product rule.
B. Bayes Theorem.
C. Exponential failure law.
D. Addition law.

Answer: A

NEW QUESTION 175
Which of the following is a key element of an effective reliability growth program?
Response:

A. A field service support organization
B. Field generated engineering change orders.
C. A reliability prediction program.
D. A failure reporting analysis and corrective action system.

Answer: D

NEW QUESTION 176
When designing experiments, which term describes the situation in which the effects of two factors are not separable?
Response:

A. Collinear.
B. Confounded.
C. Interactive.
D. Covariate

Answer: B

NEW QUESTION 177
For the ANOVA Table below, what is the Fcal statistic?

Response:

A. 5.64
B. 9.44
C. 1.58
D. 5.97

Answer: D

NEW QUESTION 178
Which of the following is the BEST description of a process FMECA?
Response:

A. It analyzes the functional output of a device.
B. It analyzes a system design and how failure modes affect the system.
C. It analyzes the specific hardware details of a device.
D. It analyzes the manufacturing operation and how manufacturing failures affect the product operation.

Answer: D

NEW QUESTION 179
The maintenance time constraint (t) is:
Response:

A. The same as the maintainability increment (M delta).
B. Usually prescribed as a requirement of the mission.
C. Determined by the exponential failure law and log tables.
D. The reciprocal of mission time (T).

Answer: B

NEW QUESTION 180
A standard parts program is likely to have which of the following positive and negative effects?

Response:

A. Option A
B. Option D
C. Option C
D. Option B

Answer: B

NEW QUESTION 181
As the reliability engineer overseeing supplier development, you review the supplier's corrective action problem solving guidebook. It is a structured approach and you notice in the problem definition segment that there is a reference to "is data" and "is not data".
You recognize that they are using a technique promoted and championed by:
Response:

A. Kaizen Principles.
B. Kaoru Ishikawa.
C. Kepner-Tregoe.
D. Deming's PDCA Cycle.

Answer: C

NEW QUESTION 182
The function below has a density distribution where X is a continuous random variable. What is the probability that X = 4.0?

Response:

A. 0.30
B. 0.40
C. 0.00
D. 0.20

Answer: C

NEW QUESTION 183
From a company's point of view, which of the following costs would be LEAST appropriate for determining the cost of reliability?
Response:

A. Life testing.
B. Warranty cost.
C. Equipment depreciation.
D. Reliability training

Answer: C

NEW QUESTION 184
Failure occur on a system at 75, 79, 83, 85 hours. Assuming normality, one sided and unbiased the lower tolerance limit for 95% reliability with 90% confidence for this sample is:
Response:

A. 63 hours.
B. 60 hours.
C. 96 hours.
D. 100 hours.

Answer: A

NEW QUESTION 185
Measures of availability include:
I. Effectiveness.
II. Inherent.
III. Achieved.
IV. Dependability.
V. Capability.
Response:

A. II and III only
B. I, III and IV
C. III, IV and V
D. II, III and IV

Answer: A

NEW QUESTION 186
A device has a MTBF of 400 hours. Assuming an exponential distribution of time to failure, what is the maximum time of allowable operation if a reliability of .995 is required?
Response:

A. 2 hours
B. 0.2 hours
C. 20 hours
D. 0.02 hours

Answer: A

NEW QUESTION 187
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: