Question 1

Determine the reliability at 75 hours for a system with a constant failure rate where the mean life is 90 hours.

Accepted Answer

0.435

Question 2

Tests are based on one or more of the following characteristics

Accepted Answer

A)  mean life 
B)  hazard rate 
C)  reliable life 
D)  all of the above 
A)  mean life 
B)  hazard rate 
C)  reliable life 
D)  all of the above D

Question 3

Assume that on the previous problem the items that failed were replaced with new items and their replacements were still operating at the end of fifteen hours.

Accepted Answer

0.040

Question 4

Which of the following life-test sampling plans is based on the test time

Accepted Answer

A)  with replacement 
B)  time-terminated 
C)  without replacement 
D)  none of the above 
A)  with replacement 
B)  time-terminated 
C)  without replacement 
D)  none of the above

Question 5

The reliability of a system is the product of the individual components when they are arranged in:

Accepted Answer

A)  parallel 
B)  series 
A)  parallel 
B)  series

Question 6

What is the reliability of the system connected as shown below?

Accepted Answer

The answer of What is the reliability of the system...

Question 7

Reliability is:

Accepted Answer

A)  rectification 
B)  acceptance criteria 
C)  number of failures 
D)  quality over the long run 
A)  rectification 
B)  acceptance criteria 
C)  number of failures 
D)  quality over the long run

Question 8

The failure pattern of a new system fits the Weibull distribution of slope 2.3 and mean life of 2.30 cycles. What is the reliability at 200 cycles

Accepted Answer

The answer of The failure pattern of a new system...

Question 9

What is the MTTF for Problem 3 above for a constant failure rate?

Accepted Answer

The answer of What is the MTTF for Problem 3...

Question 10

The reliability of a system can be improved by arranging the individual components in:

Accepted Answer

A)  parallel 
B)  series 
C)  replacement 
D)  relays 
A)  parallel 
B)  series 
C)  replacement 
D)  relays

Question 11

Construct an OC curve for a sampling plan specified as n = 15, T = 200, c = 3,
r = 6.
$\begin{array} { |l|l|l|l|l|l|l| l| }
\hline \quad&\quad&\quad&\quad&\quad&\quad&\quad&\quad\
\hline \quad&\quad&\quad&\quad&\quad&\quad&\quad&\quad\
\hline \quad&\quad&\quad&\quad&\quad&\quad&\quad&\quad\
\hline \quad&\quad&\quad&\quad&\quad&\quad&\quad&\quad\
\hline \quad&\quad&\quad&\quad&\quad&\quad&\quad&\quad\
\hline \quad&\quad&\quad&\quad&\quad&\quad&\quad&\quad\
\hline \quad&\quad&\quad&\quad&\quad&\quad&\quad&\quad\
\hline \quad&\quad&\quad&\quad&\quad&\quad&\quad&\quad\
\hline \quad&\quad&\quad&\quad&\quad&\quad&\quad&\quad\
\hline 
\end{array}$

Accepted Answer

[500, 0.151]; [1000,

Question 12

Which of the following is used for the wear out phase

Accepted Answer

A)  exponential failure analysis 
B)  Weibull failure analysis 
C)  normal failure analysis 
D)  all of the above 
A)  exponential failure analysis 
B)  Weibull failure analysis 
C)  normal failure analysis 
D)  all of the above

Question 13

One of the best ways to achieve reliability is by:

Accepted Answer

A)  simplicity 
B)  normalizing 
C)  complexity 
D)  none of the above 
A)  simplicity 
B)  normalizing 
C)  complexity 
D)  none of the above

Question 14

Two of the four conditions necessary to define reliability are:

Accepted Answer

A)  numerical value and series 
B)  function and life 
C)  environment and complex 
D)  all of the above 
A)  numerical value and series 
B)  function and life 
C)  environment and complex 
D)  all of the above

Question 15

Determine the failure rate for three items that are tested to failure. Test data in
thousands of cycles are 3.2, 3.6, and 4.3.

Accepted Answer

The answer of Determine the failure rate for three items...

Question 16

Determine the failure rate for five items that were tested for fifteen hours. Three items failed at 9, 11, 12 hours and the other two items were still operating at the end of fifteen hours.

Accepted Answer

The answer of Determine the failure rate for five items...

Question 17

Which of the following distributions is used in reliability analysis?

Accepted Answer

A)  binomial 
B)  Poisson 
C)  hypergeometric 
D)  exponential 
A)  binomial 
B)  Poisson 
C)  hypergeometric 
D)  exponential

Determine the reliability at 75 hours for a system with a constant failure rate where the mean life is 90 hours.

Tests are based on one or more of the following characteristics

Assume that on the previous problem the items that failed were replaced with new items and their replacements were still operating at the end of fifteen hours.

Which of the following life-test sampling plans is based on the test time

The reliability of a system is the product of the individual components when they are arranged in:

What is the reliability of the system connected as shown below?

Reliability is:

The failure pattern of a new system fits the Weibull distribution of slope 2.3 and mean life of 2.30 cycles. What is the reliability at 200 cycles

What is the MTTF for Problem 3 above for a constant failure rate?

The reliability of a system can be improved by arranging the individual components in:

Construct an OC curve for a sampling plan specified as n = 15, T = 200, c = 3, r = 6.

Which of the following is used for the wear out phase

One of the best ways to achieve reliability is by:

Two of the four conditions necessary to define reliability are:

Determine the failure rate for three items that are tested to failure. Test data in thousands of cycles are 3.2, 3.6, and 4.3.

Determine the failure rate for five items that were tested for fifteen hours. Three items failed at 9, 11, 12 hours and the other two items were still operating at the end of fifteen hours.

Which of the following distributions is used in reliability analysis?

Introduction to Quality Improvement

Lean Enterprise

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Exam 11: Reliability

Determine the reliability at 75 hours for a system with a constant failure rate where the mean life is 90 hours.

Tests are based on one or more of the following characteristics

Assume that on the previous problem the items that failed were replaced with new items and their replacements were still operating at the end of fifteen hours.

Which of the following life-test sampling plans is based on the test time

The reliability of a system is the product of the individual components when they are arranged in:

What is the reliability of the system connected as shown below?

Reliability is:

The failure pattern of a new system fits the Weibull distribution of slope 2.3 and mean life of 2.30 cycles. What is the reliability at 200 cycles

What is the MTTF for Problem 3 above for a constant failure rate?

The reliability of a system can be improved by arranging the individual components in:

Construct an OC curve for a sampling plan specified as n = 15, T = 200, c = 3, r = 6.

Which of the following is used for the wear out phase

One of the best ways to achieve reliability is by:

Two of the four conditions necessary to define reliability are:

Determine the failure rate for three items that are tested to failure. Test data in thousands of cycles are 3.2, 3.6, and 4.3.

Determine the failure rate for five items that were tested for fifteen hours. Three items failed at 9, 11, 12 hours and the other two items were still operating at the end of fifteen hours.

Which of the following distributions is used in reliability analysis?

Introduction to Quality Improvement

Lean Enterprise

Six Sigma

Statistical Process Control

Fundamentals of Statistics

Control Charts for Variables

Additional Spc Techniques for Variables

Fundamentals of Probability

Control Charts for Attributes

Acceptance Sampling

Management and Planning Tools

Experimental Design

Filters