Using the assembly-line balancing procedure, which of the following is the theoretical minimum number of workstations if the task times for the eight tasks that make up the job are 7, 4, 7, 8, 9, 4, 3, and 6 minutes, and the cycle time is 8 minutes?
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Using the assembly-line balancing procedure, which of the following is the theoretical minimum number of workstations if the task times for the eight tasks that make up the job are 7, 4, 7, 8, 9, 4, 3, and 6 minutes, and the cycle time is 8 minutes?
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None of these choices are correct.
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3
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8
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5
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6
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- As part of a major plant renovation project, the industrial engineering department has been asked to balance a revised assembly operation to achieve an output of 240 units per eight-hour day. Task times and precedence relationships are as follows: Task Duration(minutes) ImmediatePredecessor a 0.2 - b 0.4 a c 0.2 b d 0.4 - e 1.2 d f 1.2 c g 1.0 e, f Click here for the Excel Data File Do each of the following: a. Determine the minimum cycle time, the maximum cycle time, and the calculated cycle time. (Round your answers to 1 decimal place.) b. Determine the minimum number of stations needed. (Round your answer to the next whole number.) c. Assign tasks to workstations on the basis of greatest number of following tasks. Use longest processing time as a tiebreaker. If ties still exist, assume indifference in choice. d. Compute the percentage of idle time for the assignment in part d. Use the actual bottleneck cycle time in your calculation.…As part of a major plant renovation project, the industrial engineering department has been asked to balance a revised assembly operation to achieve an output of 230 units per 8-hour day. Task times and precedence relationships are as follows: Task Duration(minutes) ImmediatePredecessor a 0.2 - b 0.6 a c 0.4 b d 0.7 - e 1.6 d f 1.8 c g 2 e, fAlocal 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 performied. The daily demand is 150 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 taskA to be completed. To start task Cand 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 Eto be completed. Finally, task G can start only once taskFis completed.What is the minimum number of workstations needed?
- A company needs to rebalance a product layout for producing new plastic license plates. They plan to use the assembly line six hours in order to meet projected demand of 2,160 license plates each day. The following table describes the tasks involved in the production of this product: Without regard to projected demand, what is the maximum possible cycle time for this assembly line? Task Time (secs) Immediate Predecessor a 3 none b 4 none c 5 a,b d 7 none e 9 c,dA producer of inkjet printers is planning to add a new line of printers, and you have been asked to balance the process, given the following task times and precedence relationships. Assume that cycle time is to be the minimum possible. Task Length(minutes) Immediate(Predecessor) a 0.2 - b 0.4 a c 0.3 - d 1.3 b, c e 0.1 - f 0.8 e g 0.3 d, f h 1.2 g Click here for the Excel Data File a. Do each of the following: (1) Enter the number of following tasks for each of the tasks shown in the table below. (2) Assign tasks to stations in order of greatest number of following tasks. Use greatest positional weight as a tiebreaker rule. (3) Determine the percentage of idle time. (Round your answer to 2 decimal places.) (4) Compute the rate of output in printers per day that could be expected for this line, assuming a 420-minute working day. (Round your answer 2 decimal places.) b. Answer these questions: (1) What is the…Twelve tasks, with times and precedence requirements as shown in the following table, are tobe assigned to workstations using a cycle time of 1.5 minutes. Two heuristic rules will be tried:(1) greatest positional weight, and (2) most following tasks.In each case, the tiebreaker will be shortest processing time. TaskLength(minutes)ImmediatePredecessora 0.1 —b 0.2 ac 0.9 bd 0.6 ce 0.1 —f 0.2 d, eg 0.4 fh 0.1 gi 0.2 hj 0.7 ik 0.3 jl 0.2 k a. Draw the precedence diagram for this line.b. Assign tasks to stations under each of the two rules.c. Compute the percentage of idle time for each rule
- Sue Helms Appliances wants to establish an assembly line to manufacture its new product, the Micro Popcorn Popper. The goal is to produce five poppers per hour. The tasks, task times, and immediate predecessors for producing one Micro Popcorn Popper are as follows: Task Performance Time (mins) Task Must Follow Task Listed Below A 8 − B 11 A C 10 A, B D 9 B, C E 8 C F 4 D, E A C F B E D In the diagram, there are 6 circles labeled using the letters from A to F. There are 8 of arrows, and each arrow connects one circle to another circle. The arrows are situated in the following manner: A to B, A to C, B to C, C to D, B to D, C to E, D to F, and E to F. Part 2 a) The theoretical minimum number of workstations=55 (round your response up to the…Udesign is a plant producing mass production dresses. The following table shows the tasks needed to be preformed, their task times and proceeding tasks. It is required to produce 30 dresses per hour. Task Immediate predecessor Task time (sec) A - 30 B - 40 C - 20 D A 100 E B,D 25 F C,D 50 G D,E,F 50 H G 90 a- Compute the cycle time and minimum number of workstations required b- Draw the precedence diagram c- What is the maximum output for this line d- Assign tasks to workstations using most number of followers e- Compute efficiency of such lineThe desired daily output for an assembly line is 540 units. This assembly line will operate 720 minutes per day. The following table contains information on this product's task times and precedence relationships: TASK TASK TIME(SECONDS) IMMEDIATEPREDECESSOR A 35 — B 25 A C 35 A D 55 B E 5 B F 15 C G 30 E-D H 5 F-G b. What is the workstation cycle time? c. Balance this line using the largest number of following tasks. Use the longest task time as a secondary criterion. (Leave no cells blank - be certain to enter "0" wherever required.)
- A dress-making operation is being designed as an assemblyline. Table 10-22 shows the tasks that need to be performed, theirtask times, and preceding tasks. If the goal is to produce 30 dressesper hour, answer the questions that follow the table. (a) Compute the cycle time.(b) Which task is the bottleneck?(c) What is the maximum output for this line?(d) Compute the theoretical minimum number of stations.(e) Assign work elements to stations, using the longest tasktime rule.(f) Compute the effi ciency and balance delay of yourassignment.Francis Johnson’s plant needs to design an efficient assembly line to make a new product. The assembly line needs to produce 15 units per hour, and there is room for only four workstations. The tasks and the order in which they must be performed are shown in the following table. Tasks cannot be split, and it would be too expensive to duplicate any task. TASK TASK TIME (MINUTES) IMMEDIATE PREDECESSOR A 1 — B 2 — C 3 — D 1 A, B, C E 3 C F 2 E G 3 E What is the workstation cycle time required to produce 15 units per hour? Note: Round your answer to 1 decimal place. Balance the line to use the fewest possible workstations to meet the cycle time found in part (b). Use whatever method you feel is appropriate. What is the efficiency of your line balance, assuming the line operates at the cycle time from part (b)? Note: Round your answer to 1 decimal place.A local bakery makes custom cakes for special eventssuch as weddings and graduations. Making cakes is a two-step process of baking and decorating. The bakery has received eight orders, and the times required in hours for baking and decorating for each order are given in the following table:Cake Orders Baking DecoratingA 3 4B 1 2C 4 7D 2 4E 5 10F 2 6G 5 7H 6 13Determine a sequence that will minimize the makespan time.Construct a chart of the resulting sequence, and determine the idle time in te decoration process.