Concept explainers
The
a. Prepare a
b. What is the flow time in the grinding department for the SPT sequence? What is the total time needed to process the seven jobs in both the grinding and deburring departments?
c. Determine a sequence that will minimize the total time needed to process the jobs in both departments. What flow time will result for the grinding department?
d. Discuss the trade-offs between the two alternative sequencing arrangements. At what point would the production manager be indifferent concerning the choice of sequences?
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OPERATIONS MANAGEMENT W/ CNCT+
- A manufacturer is designing a product layout for a new product production. It plans to use a production line for 8 hours per day in order to meet forecasted demand of 100 units per day. The product requires 7 tasks in total. These tasks are namely, A, B, C, D, E, F, and G respectively. Task A does not have any predecessor to start. To start Task B, it requires Task A to be completed. Starting tasks C needs, the task B to be completed. Also, starting task D needed task B to be completed. Task E can only start upon completion of Task C. Whereas starting task F needs the completion of both the tasks D and E. Finally, starting task G needed, task F to be completed. The processing times for tasks, A, B, C, D, E, F, and G are 2.8, 2.1, 0.9, 1.0, 1.2, 1.8, are 4.7 minutes respectively. Applying the most following tasks rule for balancing the assembly line with ties broken according to longest task time first, the tasks that will be assigned to the SECOND workstation are: a. B,C and D b. C…arrow_forwardA manufacturer is designing a product layout for a new product production. It plans to use a production line for 8 hours per day in order to meet forecasted demand of 100 units per day. The product requires 7 tasks in total. These tasks are namely, A, B, C, D, E, F, and G respectively. Task A does not have any predecessor to start. To start Task B, it requires Task A to be completed. Starting tasks C needs, the task B to be completed. Also, starting task D needed task B to be completed. Task E can only start upon completion of Task C Whereas starting task F needs the completion of both the tasks D and E. Finally, starting task G needed, task F to be completed. The processing times for tasks, A, B, C, D, E, F, and Gare 2.8, 2.1,0.9, 1.0, 1.2, 1.8, are 4.7 minutes respectively. How many minimum numbers of workstations are needed? Select one: O a.2 O b. None is the correct answer O c.6 O d. 8 O e. 4arrow_forwardFive jobs must be scheduled for batch processing on a mainframe computer system. The processing times and the promised times for each of the jobs are listed here. (given) Assume that the current time is 10:00 A.M.a. If the jobs are scheduled according to SPT, find the tardiness of each job and the mean tardiness of all jobs.b. Repeat the calculation in part (a) for EDD scheduling.arrow_forward
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