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A manufacturing system consists of 3 machines. Parts arriv the shops where they will be processed, each part will be tm the need of a resource) and the move time takes UNIF(2. 31

A manufacturing system consists of 3 machines. Parts arriv the shops where they will be processed, each part will be tm the need of a resource) and the move time takes UNIF(2. 31

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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A manufacturing system consists of 3 machines. Parts arrive following EXPO(4) distribution. Upon arrival, the parts will be send to the shops where they will be processed, each part will be transported individually (assume the parts move by themselves without the need of a resource) and the move time takes UNIF(2, 3) minutes. Once the parts arrive at the shop station the parts are distributed among the machines by selecting the machine with the shortest queue, if there are ties, then the tie breaker is the machine index (Machine 1 is prioritized over machine 2, and 3, and machine 2 is prioritized over machine 3). There is no maximum buffer capacity to be considered. Processing time for each machine is constant and is equal to 8 minutes. All three machines have failure modes; the machines have up times and down time as following: Machine 1 Up Time expo(120) min, Down Time UNIF(5,10) min, Machine 2 up time EXPO(100) min and down time UNIF(5,15) + TRIA(1,2,3) while for machine 3 up time EXPO(50) and down time UNIF(8,10). Do 20 replications of 200 hours and select the correct answers only: Source of the variability in this model is from the arrival process The maximum number waiting for each machine is less than 10. Machine 1 has the highest utilization of about 89% The average WIP is less than 10 parts. Machine 2 is failed about 11% of the time. Machine 3 is Idle 32% of the time
Transcribed Image Text:A manufacturing system consists of 3 machines. Parts arrive following EXPO(4) distribution. Upon arrival, the parts will be send to the shops where they will be processed, each part will be transported individually (assume the parts move by themselves without the need of a resource) and the move time takes UNIF(2, 3) minutes. Once the parts arrive at the shop station the parts are distributed among the machines by selecting the machine with the shortest queue, if there are ties, then the tie breaker is the machine index (Machine 1 is prioritized over machine 2, and 3, and machine 2 is prioritized over machine 3). There is no maximum buffer capacity to be considered. Processing time for each machine is constant and is equal to 8 minutes. All three machines have failure modes; the machines have up times and down time as following: Machine 1 Up Time expo(120) min, Down Time UNIF(5,10) min, Machine 2 up time EXPO(100) min and down time UNIF(5,15) + TRIA(1,2,3) while for machine 3 up time EXPO(50) and down time UNIF(8,10). Do 20 replications of 200 hours and select the correct answers only: Source of the variability in this model is from the arrival process The maximum number waiting for each machine is less than 10. Machine 1 has the highest utilization of about 89% The average WIP is less than 10 parts. Machine 2 is failed about 11% of the time. Machine 3 is Idle 32% of the time
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