A small manufacturing process consists of 2 single machine workstations as pictured below.Workstation 1Workstation 2The warehouse management system has collected data and the summary statistics computed.The average arrival rate to this process is 15 jobs and hour and the coefficient of variation of theinter-arrival times is 0.8. Workstation statistics are found in the following table:w/s 1w/s 23.75Average effective processing time (min)CV of processing times3.51.01.5What is the average time between job arrivals to w/s 2? What is the CV of these times?Compute the following:Average time jobs spend waiting in w/s 1Average time it takes to process a job in w/s 1Average time jobs spend waiting in w/s 2Average time it takes to process a job in w/s 2What is the average WIP in the entire system?

A small manufacturing process consists of 2 single machine workstations as pictured below. Workstation 1 Workstation 2 The warehouse management system has collected data and the summary statistics computed. The average arrival rate to this process is 15 jobs and hour and the coefficient of variation of the inter-arrival times is 0.8. Workstation statistics are found in the following table: w/s 1 w/s 2 3.75 1.5 Average effective processing time (min) CV of processing times What is the average time between job arrivals to w/s 2? What is the CV of these times? Compute the following: Average time jobs spend waiting in w/s 1 • Average time it takes to process a job in w/s 1 Average time jobs spend waiting in w/s 2 Average time it takes to process a job in w/s 2 What is the average WIP in the entire system? 3.5 1.0

A small manufacturing process consists of 2 single machine workstations as pictured below. Workstation 1 Workstation 2 The warehouse management system has collected data and the summary statistics computed. The average arrival rate to this process is 15 jobs and hour and the coefficient of variation of the inter-arrival times is 0.8. Workstation statistics are found in the following table: w/s 1 w/s 2 3.75 1.5 Average effective processing time (min) CV of processing times What is the average time between job arrivals to w/s 2? What is the CV of these times? Compute the following: Average time jobs spend waiting in w/s 1 • Average time it takes to process a job in w/s 1 Average time jobs spend waiting in w/s 2 Average time it takes to process a job in w/s 2 What is the average WIP in the entire system? 3.5 1.0

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

A small manufacturing process consists of 2 single machine workstations as pictured below.
Workstation 1
Workstation 2
The warehouse management system has collected data and the summary statistics computed.
The average arrival rate to this process is 15 jobs and hour and the coefficient of variation of the
inter-arrival times is 0.8. Workstation statistics are found in the following table:
w/s 1
w/s 2
3.75
Average effective processing time (min)
CV of processing times
3.5
1.0
1.5
What is the average time between job arrivals to w/s 2? What is the CV of these times?
Compute the following:
Average time jobs spend waiting in w/s 1
Average time it takes to process a job in w/s 1
Average time jobs spend waiting in w/s 2
Average time it takes to process a job in w/s 2
What is the average WIP in the entire system?

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Step 3: Determine the average Time It Takes to Process a Job in W/S 1 and waiting in W/S 2:

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A toy factory is planning to make an additional item, which would be processed in 4 departments. The company is proposing to produce 600,000 units per year, working 250 days per year. The estimates of times made by an industrial engineer are in the table: Departments Times 1 2 3 4 Average processing time (second/part) 8 13 10 50 Average maintenance, time/day (minutes) 20 30 20 15 Average daily setup, time (minutes) 20 15 30 20 Average bookkeeping, time/day (minutes) 10 8 12 5 Machine adjustment, time/day (minutes) 15 10 15 15 Defective items, (% of production) 5 6 4 4 The parts are produced within the departments in a sequential manner (from department 1 to 2 to 3 to 4). Determine the efficiency of each departmental operation if only one shift is operated between 7:30 am-4:30 pm, with a 40 minute lunchbreak and two 10 minute coffee breaks.
Six jobs arrived in a sequence as given below: Jobs Processing Time (in Days) I 4 II 9 III IV 10 6. VI 8 Average flow time (in days) for the above jobs using Shortest Processing time rule is (A) 20.83 (B) 23.16 (C) 125.00 (D) 139.00
production planning and control help please
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