If a system consists of 2 major subsystems and the required reliability is 0.9
If a system consists of 2 major subsystems and the required reliability is 0.9, what is the allocated reliability of each subsystem, assuming equal apportionment?
A. 0.45
B. 0.95
C. 0.90
D. 0.30
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If a system consists of 2 major subsystems and the required reliability is 0.9
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...
4.9 An automotive powertrain system consists of engine, transmission, and axle subsystems connect...
4.9 An automotive powertrain system consists of engine, transmission, and axle subsystems connected in logic series. The reliability target of the powertrain system is 0.98 at 36 months. Allocate the reliability target equally to each subsystem.
4.9 An automotive powertrain system consists of engine, transmission, and axle subsystems connected in logic series. The reliability target of the powertrain system is 0.98 at 36 months. Allocate the reliability target equally to each subsystem.
4.9 An automotive powertrain system consists of engine, transmission, and axle subsystems connect...
4.9 An automotive powertrain system consists of engine, transmission, and axle subsystems connected in logic series. The reliability target of the powertrain system is 0.98 at 36 months. Allocate the reliability target equally to each subsystem. 4.10 Refer to Problem 4.9. The lives of the engine, transmission, and axle sub- systems are assumed to be exponentially distributed with 6.3 x 10-5,3.1 >x 10-5, and 2.3 x 10-5 failures per month, respectively. Determine the reli- ability target of each subsystem using...
An aircraft system is modeled as being comprised of (3) independent subsystems - each critical -...
An aircraft system is modeled as being comprised of (3) independent subsystems - each critical - with reliability as follows : – Electrical => 15% probability of failure – Mechanical/Hydraulic => 10% probability of failure – Fuel/Powerplant => 5% probability of failure Question 1: What is the overall reliability of the aircraft system? Two identical Electrical subsystems are installed side-by-side in a hot-swap backup configuration. Question 2: Assuming all independent subsystem components have the same reliability as previously stated, what...
can some one do 4.11 4.11 A system is comprised of four subsystems connected in logic...
can some one do 4.11
4.11 A system is comprised of four subsystems connected in logic series. The system reliability target is 0.975 at 500 hours of continuous operation. Com- pute the reliability target for each subsystem using the AGREE approach with the data given in Table 4.6 4.12 A product consists of four subsystems. QFD analysis indicates that the product has four important customer expectations (Ei,i = 1, 2, 3, 4), four system performance characteristics (Yj, j-1, 2, 3,...
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...
A system consists of the following units: The reliability of the initial X unit is 0.95....
A system consists of the following units: The reliability of the initial X unit is 0.95. The other four Y units are identical. If the system reliability goal is 0.92, what is the minimum reliability that each of the Y units must have?
10.15 A system consists of two subsystems in series, each with v/λ-102 as its ratio of repair rat...
10.15 A system consists of two subsystems in series, each with v/λ-102 as its ratio of repair rate to failure rate. Assuming revealed failures, what is the availability of the system after an extended period of operation?
10.15 A system consists of two subsystems in series, each with v/λ-102 as its ratio of repair rate to failure rate. Assuming revealed failures, what is the availability of the system after an extended period of operation?
2. Consider the reliability model given in Assignment 5 Problem 1. You have discovered that the...
2. Consider the reliability model given in Assignment 5 Problem 1. You have discovered that the reliabilities given there were just rough estimates. After careful analysis of historical data, you know that each component has a random time until failure that is distributed according to the following table. Ideally, this machine shop should run for the next 2 years without the need to replace any components. Mean time until failure (MTTF); Time until failure (TTF) Component Distribution Exponential Parameters MTTF:...
Problem 4 Consider the system of components connected as depicted below. The system can be thought...
Problem 4 Consider the system of components connected as depicted below. The system can be thought of as being comprised of two subsystems: one with components A and B, and the other with components C and D. Components A and B are connected in parallel, therefore that subsystem works iff either A or B works. Since C and D are connected in series, that subsystem works iff both C and D work. Components work independent of each other (that is,...
4.9 An automotive powertrain system consists of engine, transmission, and axle subsystems connected in logic series. The reliability target of the powertrain system is 0.98 at 36 months. Allocate the reliability target equally to each subsystem.
4.9 An automotive powertrain system consists of engine, transmission, and axle subsystems connected in logic series. The reliability target of the powertrain system is 0.98 at 36 months. Allocate the reliability target equally to each subsystem.
4.9 An automotive powertrain system consists of engine, transmission, and axle subsystems connected in logic series. The reliability target of the powertrain system is 0.98 at 36 months. Allocate the reliability target equally to each subsystem. 4.10 Refer to Problem 4.9. The lives of the engine, transmission, and axle sub- systems are assumed to be exponentially distributed with 6.3 x 10-5,3.1 >x 10-5, and 2.3 x 10-5 failures per month, respectively. Determine the reli- ability target of each subsystem using...
can some one do 4.11
4.11 A system is comprised of four subsystems connected in logic series. The system reliability target is 0.975 at 500 hours of continuous operation. Com- pute the reliability target for each subsystem using the AGREE approach with the data given in Table 4.6 4.12 A product consists of four subsystems. QFD analysis indicates that the product has four important customer expectations (Ei,i = 1, 2, 3, 4), four system performance characteristics (Yj, j-1, 2, 3,...
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...
10.15 A system consists of two subsystems in series, each with v/λ-102 as its ratio of repair rate to failure rate. Assuming revealed failures, what is the availability of the system after an extended period of operation?
10.15 A system consists of two subsystems in series, each with v/λ-102 as its ratio of repair rate to failure rate. Assuming revealed failures, what is the availability of the system after an extended period of operation?
2. Consider the reliability model given in Assignment 5 Problem 1. You have discovered that the reliabilities given there were just rough estimates. After careful analysis of historical data, you know that each component has a random time until failure that is distributed according to the following table. Ideally, this machine shop should run for the next 2 years without the need to replace any components. Mean time until failure (MTTF); Time until failure (TTF) Component Distribution Exponential Parameters MTTF:...
Problem 4 Consider the system of components connected as depicted below. The system can be thought of as being comprised of two subsystems: one with components A and B, and the other with components C and D. Components A and B are connected in parallel, therefore that subsystem works iff either A or B works. Since C and D are connected in series, that subsystem works iff both C and D work. Components work independent of each other (that is,...
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