Three jobs are to be assigned to three machines. Determine an appropriate assignment in order to minimise the total time required, based on the following information: JOB R-34 S-66 T-50 A 11 8 9 Machine time in hours B 14 10 12 с 6 11 7
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- An assembly task was broken down into four elements, and timed using the continuous timing method. The resulting data and performance ratings are provided below. Calculate the total standard time for this task. Element 1 2 3 4 Watch Time 1.85 2.96 5.42 7.10 Observed Time Rating 95 105 120 115 Normal Time Total ST Standard TimeDrew Rosen Automation Company estimates the data entry and verifying times for four jobs as follows: In what order should the jobs be done if the company has one operator for each job? The order is Choose the correct graph of the time-phased flow of this job sequence. O A. O C. Job Entry Time A 2.0 Job Verify Time S 2.0 - Idle B Job Entry Time A 3.4 3.4 5.4 - Idle A Job Verify Time A B 5.6 5.4 C B B 199 5.8 7.2 8.2 D 11 7.9 9.5 D 194 8.0 9.4 10.5 C D 111 9.4 11.7 13.3 Q ✔ Q JOB ABCD DATA ENTRY (HOURS) 2.0 3.6 2.3 1.6 B. O D. VERIFY (HOURS) 3.4 2.4 1.4 1.0 Job Entry Time A H 2.0 Job Verify Time A ㅏ Job Entry Time A H 2.0 Job Verify Time D, C H 3.4 1.0 2.4 B - Idle B B 5.6 C 5.6 4 C, D 5.8 7.2 8.2 C 7.9 B 7.9 8.0 D D 9.5 9.5 A 11.4 Q G Q1. A production department of a textile firm received six different orders this week. They have calculated the processing time presented as a table (below). They have also put the due dates for each job. Job A с E B D F Process. Time 2 4 5 8 10 12 Due Date 7 4 15 16 17 18 Based on the table please provide four sequences to complete the jobs: a) Using first come first served (FCFS) assuming the letters represent the order they arrive (A first, B next, then C, etc..) b) Using shortest processing time c) Using longest processing time d) Using due dates Calculate "average completion time", "average number of jobs in the system" and "average job lateness" for all the sequences you have generated above.
- Drew Rosen Automation Company estimates the data entry and verifying times for four jobs as follows: JOB A DATA ENTRY (HOURS) VERIFY (HOURS) 3.5 2.6 B 2.1 1.2 с 1.8 3.2 D 2.3 1.5 In what order should the jobs be done if the company has one operator for each job? The order is Choose the correct graph of the time-phased flow of this job sequence. ОА. Job Entry Time с A D B ○ B. Job Entry Time с H A ○ C. 3.2 5.0 9.3 11.6 13.7 Job Verify Time с A DB 3.2 - Idle 5.8 7.3 8.5 Job Entry Time с H A D B 1.8 5.3 7.6 9.7 Job Verify Time B. D A с 1.2 2.7 - Idle 7.9 11.1 B 1.8 Job Verify Time C 5.3 7.6 9.7 A D B 3.2 5.8 7.3 8.5 ○ D. Q с Job Entry Time A D B H 1.8 5.3 7.6 9.7 Job Verify Time с A D B 1.8 5.0 7.9 9.4 10.9 - IdleRockness Recycling refurbishes rundown business students. The process uses a moving belt, which carries each student through the five steps of the process in sequence. The five steps are as follows: STEP DESCRIPTION TIME REQUIREDPER STUDENT 1 Unpack and place on belt 1.2 minutes 2 Strip off bad habits 1.0 minutes 3 Scrub and clean mind 1.5 minutes 4 Insert modern methods 0.8 minute 5 Polish and pack 1.0 minutes One faculty member is assigned to each of these steps. Faculty members work a 40-hour week and rotate jobs each week. Mr. Rockness has been working on a contract from General Eclectic, which requires delivery of 2,000 refurbished students per week. A representative of the human resources department has just called complaining that the company hasn’t been receiving the agreed-upon number of students. A check of finished goods inventory by Mr. Rockness reveals that there is no stock left. a. Calculate the maximum output for each step. b. Which step…Medical Solutions, Inc. has the following claims it must complete in the next week (40 hours). The jobs are as follows: Claim Type Spinal injury Number of Claims Setup (Changeover) to Process (Work Time per Claim Type (hours) Cancer treatment 15 Hip replacement Order Quantity) 14 10 SI Claims Workload: hours Processing Time per Claim (hours) HR Claims Workload: hours 3.0 1.1 2.5 0.9 1.5 All claims of the same type are processed together. Is 40 hours enough capacity? (Hint: use Equation 10.3.) Round your answers to one decimal place. CT Claims Workload: hours 0.5 Total workload is hours while capacity is 40 hours. The work -Select-cancannotItem 5 be completed using regular time hours.
- The Sun River beverage company is a regional producer of teas, exotic juices, and energy drinks. With an interest in healthier lifestyles, there has been an increase in demand for its sugar-free formulation. The final packing operation requires 13 tasks. Sun River bottles its sugar-free product 5 hours a day, 5 days a week. Each week, there is a demand for 3,000 bottles of this product. TASK TIME (MINUTES) PRECEDING TASK 1 0.1 — 2 0.1 1 3 0.1 2 4 0.2 2 5 0.1 2 6 0.2 3, 4, 5 7 0.1 1 8 0.1 7 9 0.2 8 10 0.1 9 11 0.2 6 12 0.2 10, 11 13 0.1 12 Using the following data, solve the assembly-line balancing problem and calculate the efficiency of your solution. Use the longest task time for your decision criteria. Note: Round your answer to the nearest whole percent.Discuss the consequences of task time variability in line balancing ?Is this data regarding missing jobs pulled directly from the FRED database?
- Enter data only in Number of Jobs 5 Job 1 2 3 yellow-shaded cells. Up to 10 jobs may be sequenced Average Average Average Number o Maximum Flowtime Lateness Tardines: Tardy Job: Tardiness 14.40 4.20 5.00 3 12.00 4 5 6 7 8 9 10 'rocessing Tim 7 3 5 2 6 Due Dat 11 10 8 5 17 iequence Processing Time Due Date Flowtime Lateness Tardiness 1 11 7 -4 0 2 10 10 0 0 3 8 15 7 7 4 5 17 12 12 5 17 23 6 6 7 3 5 2 6Raquel’s Landscaping Company has contracted forseveral landscaping jobs. Each job requires preparing the areas(identifying the locations and types of plants, preparing the soil,etc.) and then planting the trees, bushes, and shrubs. Th e expectedtime for each of the jobs is shown next. (a) Using FCFS (fi rst come, fi rst served), assume the jobsarrive in the order shown (R, then S, then T, etc.). Showthe beginning and ending time for each job.(b) Calculate the makespan, the mean job fl ow time, and theaverage number of jobs in the system.The following table lists the jobs of the network with their time estimators in days the value of Z on 54 days i-j to tm A-B 2 16 B-C 12 31 B-D 1 5 9 C-E 4 11 18 D-E 8 16 B-F 3 5 13 E-F 19 25 1.66 0.77 2.66 0.66 O