1. Calculate Reliability for a series system at 3000 hours with the following sub system reliabilities....
1. Calculate Reliability for a series system at 3000 hours with the following sub system reliabilities.
Series Reliability at 3000 hours
Engine 0.38
Gear 0.97
Shafting 0.99
Propellor 0.88
2. Calculate the reliability of the system if there were two redundant systems similar to the system above.
Homework Answers
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1. Calculate Reliability for a series system at 3000 hours with
the following sub system reliabilities....
A system is composed of three components. Two of the components are in parallel reliabilities of...
A system is composed of three components. Two of the components are in parallel reliabilities of 0.98 and 0.99. The third component has a reliability if 0.97 and is in series with the first combination. What is the overall system reliability? a) 0.945 b) 0.873 c) 0.696 d) 0.949 e) none of the above
Question 5 20 pts Given components with the following reliabilities, A-0.99,-0.98, and C0.97. The components A,...
Question 5 20 pts Given components with the following reliabilities, A-0.99,-0.98, and C0.97. The components A, B, and are connected in series. What is the reliability of the system? (round to 2 decimal places) O 0.94 O 0.96 O 0.97 O 0.93
Question 1 20 pts Given components with the following reliabilities A-0.99,B-0.98, and C=0.97. assume the components...
Question 1 20 pts Given components with the following reliabilities A-0.99,B-0.98, and C=0.97. assume the components are connected in parallel What is the reliability of the system? (round to 6 decimal places) O 0.9998 O 0.999940 O 0.999400 0.999994 Question 2 20 pts What is the reliability of a five-component parallel system when the reliabilities of each component are 0.707 (round to 4 decimal places) O 0.9919 O 0.9976 0.9813 O 0.1681
[Question 4: 20 points) Find the system reliability of the following series-parallel configurations using component reliabilities....
[Question 4: 20 points) Find the system reliability of the following series-parallel configurations using component reliabilities. 0.75 0.80 0.90 0.75 0.90 0.80 0.80 0.90 0.9 (b)
9.23 An engineer designs a system consisting of two subsystems in series. The reliabilities are R...
9.23 An engineer designs a system consisting of two subsystems in series. The reliabilities are R 0.98 and Re 0.94. The cost of the two subsystems is about equal. The engineer decides to add two redundant components Which of the following would it be better to do? (a) Duplicate subsystems 1 and 2 in high-level redundance. (b) Duplicate subsystems 1 and 2 in low-level redundance (c) Replace the second subsystem with 1/3 redundance Justify your answer.
9.23 An engineer designs...
1. A system has an overall reliability of 0.90. a. Calculate the overall Unreliability of the...
1. A system has an overall reliability of 0.90. a. Calculate the overall Unreliability of the system. b. Calculate the reliability of a new system with two subsystems in series each with a reliability of 0.90. c. Calculate the reliability of a new system with two subsystems in parallel (back-up) each with a reliability of 0.90. d. Calculate the overall reliability of a system with two subsystems in series with the first subsystem reliability of 0.8 and second system reliability...
5. For the nameplate data above (question #4) calculate: • Slip speed = • Rotation frequency...
5. For the nameplate data above (question #4) calculate: • Slip speed = • Rotation frequency = • Percentage slip = 6. Name the three conditions required for creation of a circular magnetic field in a three phase induction motor. 7. What is the main two goals of building a reliability diagram? 12. For the diagram below, write the formulae for Availability of the following: a) Conveyer 1 (all three motors required for operation) b) Crushers (all three motors required...
Need 2-8 - CHAPTER QUESTIONS Reliability 245 1. Definere blir ne reliability in your own words....
Need 2-8
- CHAPTER QUESTIONS Reliability 245 1. Definere blir ne reliability in your own words. Describe the key elements and why they are important 2. Describe the three phases of the life syde curve. Drew the curve and label it in detail (the axes, phases, type of product failure, etc.). 3. Determine the failure rate for the following You have tested circuit boards for failures during a 300-hour continuous use test. Four of the 25 boards tailed. The first...
(1)The field test data in respect of 172 components is as given below. In the life-testing...
(1)The field test data in respect of 172 components is as given below. In the life-testing of 100 specimens of a particular device, the number of failures during each time interval of twenty hours is shown in Table below. Estimate and Plot: the hazard function, failure density and reliability function. Time/Hours Failure 0-1000 59 1000-2000 24 2000-3000 3000-4000 4000-5000 5000-6000 29 30 17 13 (1) calculate the reliability of the system shown in the figure below 0.8 5 0.8 0.9...
manufacturing overhead costs $3,660,000 Actual machine-hours 196,000 1. Calculate the budgeted manufacturing overhead rate. 2 Calculate...
manufacturing overhead costs $3,660,000 Actual machine-hours 196,000 1. Calculate the budgeted manufacturing overhead rate. 2 Calculate the manufacturing overhead allocated during 2017 3. Calculate the amount of under-or overallocated manufacturing overhead. Why do Taylor's managers need to calculate this amount? 4-25 Job costing, accounting for manufacturing overhead, budgeted rates. The Matthew Company uses Seormal job-costing system at its Minneapolis plant. The plant has a machining department and an assem- bly department. Its job-costing system has two direct-cost categories (direct materials...
Question 5 20 pts Given components with the following reliabilities, A-0.99,-0.98, and C0.97. The components A, B, and are connected in series. What is the reliability of the system? (round to 2 decimal places) O 0.94 O 0.96 O 0.97 O 0.93
Question 1 20 pts Given components with the following reliabilities A-0.99,B-0.98, and C=0.97. assume the components are connected in parallel What is the reliability of the system? (round to 6 decimal places) O 0.9998 O 0.999940 O 0.999400 0.999994 Question 2 20 pts What is the reliability of a five-component parallel system when the reliabilities of each component are 0.707 (round to 4 decimal places) O 0.9919 O 0.9976 0.9813 O 0.1681
[Question 4: 20 points) Find the system reliability of the following series-parallel configurations using component reliabilities. 0.75 0.80 0.90 0.75 0.90 0.80 0.80 0.90 0.9 (b)
9.23 An engineer designs a system consisting of two subsystems in series. The reliabilities are R 0.98 and Re 0.94. The cost of the two subsystems is about equal. The engineer decides to add two redundant components Which of the following would it be better to do? (a) Duplicate subsystems 1 and 2 in high-level redundance. (b) Duplicate subsystems 1 and 2 in low-level redundance (c) Replace the second subsystem with 1/3 redundance Justify your answer.
9.23 An engineer designs...
5. For the nameplate data above (question #4) calculate: • Slip speed = • Rotation frequency = • Percentage slip = 6. Name the three conditions required for creation of a circular magnetic field in a three phase induction motor. 7. What is the main two goals of building a reliability diagram? 12. For the diagram below, write the formulae for Availability of the following: a) Conveyer 1 (all three motors required for operation) b) Crushers (all three motors required...
Need 2-8
- CHAPTER QUESTIONS Reliability 245 1. Definere blir ne reliability in your own words. Describe the key elements and why they are important 2. Describe the three phases of the life syde curve. Drew the curve and label it in detail (the axes, phases, type of product failure, etc.). 3. Determine the failure rate for the following You have tested circuit boards for failures during a 300-hour continuous use test. Four of the 25 boards tailed. The first...
(1)The field test data in respect of 172 components is as given below. In the life-testing of 100 specimens of a particular device, the number of failures during each time interval of twenty hours is shown in Table below. Estimate and Plot: the hazard function, failure density and reliability function. Time/Hours Failure 0-1000 59 1000-2000 24 2000-3000 3000-4000 4000-5000 5000-6000 29 30 17 13 (1) calculate the reliability of the system shown in the figure below 0.8 5 0.8 0.9...
manufacturing overhead costs $3,660,000 Actual machine-hours 196,000 1. Calculate the budgeted manufacturing overhead rate. 2 Calculate the manufacturing overhead allocated during 2017 3. Calculate the amount of under-or overallocated manufacturing overhead. Why do Taylor's managers need to calculate this amount? 4-25 Job costing, accounting for manufacturing overhead, budgeted rates. The Matthew Company uses Seormal job-costing system at its Minneapolis plant. The plant has a machining department and an assem- bly department. Its job-costing system has two direct-cost categories (direct materials...
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