Job times which includes processing and set up times are shown below: Job Job Time (bcs) Due Date (bs) A 15 24 20 8 6 12 6 B C D B 7 Using FCFS, determine the average tardiness 14 3
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- The following jobs are waiting to be processed at JulieMorel’s machine center:JOB DATE ORDER RECEIVED PRODUCTIONDAYS NEEDED DATE ORDER DUEA 110 20 180B 120 30 200C 122 10 175D 125 16 230E 130 18 210 In what sequence would the jobs be ranked according to the fol-lowing rules: (a) FCFS, (b) EDD, (c) SPT, and (d) LPT? All dates are according to shop calendar days. Today on the planning cal-endar is day 130, and none of the jobs have been started or sched-uled. Which rule is best?Five jobs are ready for processing at time zero through a workstation. The details of the processing time and the due date of completion is provided in the following table. According to EDD, what is the optimal sequence? Job Processing Time (days) Due Date A 8 12 B 4 9 IC 3 6 7 E 5 20 a) E-A-B-D-C b) C-B-E-D-A c) A-B-C-D-E d) C-D-B-A-EJack's Refrigeration Repair Service repairs and reconditions commercial icemakers at restaurants. Jack has four jobs to complete. Below are their processing times and due dates: Job Processing time (hours) Due date (hour) A 20 50 B 10 40 C 15 35 D 55 75 What is the average inventory if jobs are processed using the earliest due date rule?
- The following jobs are waiting to be processed at thesame machine center. Jobs are logged as they arrive:JOB DUE DATE DURATION (DAYS)A 313 8B 312 16C 325 40D 314 5E 314 3 In what sequence would the jobs be ranked according to the follow-ing decision rules: (a) FCFS, (b) EDD, (c) SPT, and (d) LPT? All dates are specified as manufacturing planning calendar days. Assumethat all jobs arrive on day 275. Which decision is best and why?In a few words, explain how to prevent a process getting starved in priority scheduling.TIme lert 1:08:20 tion A local toy manufacturer is using a production line that runs 8 hours per day and produces a toy that requires a total of 7 tasks to be performed. The daily demand is 120 toys. Times of the tasks are 2.73, 2.01, 2.13, 2.0, 2.61, 2.71, and 2.95 minutes for A, B, C, D, E, F, and G, respectively. However, due to the nature of the product there are precedence rules that must be observed. Such that Task A does not need any predecessors; task B requires task A to be completed. To start task C and task D, each require task B to be completed. Task C must be completed prior to stating task E. Task F needs both task D and task E to be completed. Finally, task G can out of start only once task F is completed.What is the minimum number of workstations needed? O a. 8 O b. 6 O c. 5 O d. None of them e. 4 Fir NEXT PAGE EVIOUS PAGE
- Write the Objectives of Workcenter Scheduling?What does it mean for a process to be "starved" according to the priority scheduling method? What are some ways that this may be avoided?← Using the FCFS rule for scheduling, the sequence is 1-2-3 For the schedule developed using the FCFS rule, the total length of time taken to complete the three suits (including delivery)= 225 hours (enter your response as a whole number). Using Johnson's rule for 2-machine scheduling, the sequence is A Sunny Park Tailors has been asked to make three different types of wedding suits for separate customers. The table below highlights the time taken in hours for cutting and sewing (process 1) and delivery (process 2) of each of the suits. Times Taken for Different Activities (hours) Cut and Sew 7 4 5 Suit 1 2 3 Deliver 2 3 6 Assume that orders for suits have been listed in the above table in the order in which they were received
- Explain the machine-scheduling problem?Five jobs are ready for processing at time zero through a workstation. The details of the processing time and the due date of completion is provided in the following table. Job A B Processing Time (days) I5 Due Date 11 6 3 16 19 10 D E 15 Using the earliest due date (EDD) rule, the average lateness for the five jobs is decimal place. Round your answer to one Your Answer: AnswerIf the cycle time is 65.4 seconds and A is assigned as the first task in Workstation #1, what is the idle time after assigning task A? Task Task Time (seconds) Tasks That Must Precede Other Tasks Number of Following Tasks A 28 - 7 B 13 - 8 C 35 B 7 D 11 A 6 E 20 C 6 F 6 D, E 5 G 23 F 3 H 25 F 2 I 37 G 1 J 11 G, H 1 K 27 I, J 0 Total 236 a. 26.9 minutes b. 37.4 seconds c. 28.5 seconds d. 31.6 seconds e. 57.6 seconds