The operations manager of an instruments company is balancing an assembly line. The company needs to build 96 instruments per 24-hour day. The assembly line activities are: Task Time (min) Predecessor A. 3. None 6. None C 7. D А, В E 2. F 4 C H. 7 D,E H. E K 4. G,I, J
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- Management wants to design an assembly line that will turn out 800 videotapes per day. There will be eight working hours in each day. The industrial engineering staff has assembled the information below: Task a Time (min. .2 .2 .4 .1 .3 .2 .1 .2 Immediate Predecessor none a none none c, d be none £ g (A) Determine the maximum and minimum cycle time. (B) Determine the optimum cycle time. (C) What is the minimum number of stations needed? (D) Draw the precedence diagram. (E) Assign tasks to stations in order of most following tasks first.An assembly line is to be designed to operate 7½ hours per day and supply a steady demand of 300 units per day. Here are the tasks and their performance times: TASK PRECEDING TASKS PERFORMANCETIME (SECONDS) A — 70 B — 40 C — 45 D A 10 E B 30 F C 20 G D 60 H E 50 I F 15 J G 25 K H, I 20 L J, K 25 What is the workstation cycle time required to meet the desired output rate? What is the theoretical minimum number of workstations required to meet the desired output rate? Note: Round up your answer to the next whole number. Assign tasks to workstations using the longest operating time. What is the efficiency of your line balance, assuming it is running at the cycle time determined in part b? Note: Round your answer to 1 decimal place. Suppose demand increases by 10 percent. How would you react to this? Assume that you can operate only 71/2 hours per day. Note: Round your answer for cycle time down to the nearest whole number. Round your…Assembly-Line Balancing The time to perform each task and the tasks that must be immediately preceded are shownbelow: Task Time (Minutes) Immediate PredecessorsA 0.25 -B 0.08 AC 0.12 BD 0.17 BE 0.06 C, DF 0.05 EG 0.09 EH 0.11 EI 0.16 F, G, HJ 0.08 I If 150 products are needed per hour and 50 minutes per hour are productive. Calculate the following:(a) Use the longest-task-time heuristic to balance the production line.(b) What is the efficiency of this assembly line balancing?
- An assembly line is to operate eight hours per day with a desired output of 200 units per day. The following table contains information on this product’s task times and precedence relationships: TASK TASK TIME(SECONDS) IMMEDIATEPREDECESSOR A 60 — B 60 A C 50 A D 70 A E 30 B, C F 110 C, D G 70 E, F H 70 G b. What is the required workstation cycle time to meet the desired output rate? (Round your answer to the nearest whole number.) c. Balance this line using the longest task time. (Leave no cells blank - be certain to enter "0" wherever required.) d. What is the efficiency of your line balance, assuming it is running at the cycle time determined in part b? (Round your answer to 1 decimal place.)Daily demand of a product is 240 units and the assembly line operates 8-hour per day. The task times and precedence relationship are given below. Task Task time (sec) Immediate predecessor A 60 B 80 A C 20 A D 50 A E 90 B,C F 30 C,D G 30 E,F H 60 G a. What is the assignment task-workstation assignment obtained using ranked positional weight heuristic? b. What is the cycle time achievable? c. What is the efficiency of the line?An assembly plant for the Blood Pressure RX, a portable blood pressure device, has 400 minutes available daily in the plant for the device, and the average demand is 80 units per day. Final assembly requires 6 separate tasks. Information concerning these tasks is given in the following table. Task Performance Time (minutes) Task Must Follow Task Listed Below A 4 - B 1 - C 1 A, B D 3 C E 4 D F 2 E b) Given the demand, what is the cycle time for this operation? The cycle time for this operation is enter your response here minutes/unit (enter your response as a whole number). c) What is the theoretical minimum number of workstations? The theoretical minimum number of workstations is enter your response here stations (enter your response as a whole number and, if your unrounded answer includes decimal values,…
- An assembly line must be designed to produce 50 packagesper hour. Th e following data in Table 10-17 give the necessaryinformation. (a) Draw a precedence diagram.(b) Compute the cycle time (in seconds) to achieve thedesired output rate.(c) What is the theoretical minimum number of stations?(d) Which work element should be assigned to whichworkstation?(e) What are the resulting effi ciency and balance delaypercentages?Stanford Rosenberg Computing wants to establish an assembly line for producing a new product, the Personal Digital Assistant (PDA). The tasks, task times, and immediate predecessors for the tasks are as follows: Task Time (sec) Immediate Predecessor A 11 − B 14 A C 8 A D 4 B, C E 20 D Rosenberg's goal is to produce 180 PDAs per hour. a) The cycle time for the production of a PDA = 20 seconds (round your response to two decimal places). Part 3 b) The theoretical minimum number of workstations that Rosenberg can achieve in this assembly line=3(round your response up to the next whole number). c) For one to assign the tasks to the actual workstations and be able to use the "theoretical minimum" number, the activity assignment should be: Workstation # Tasks Assigned to Workstation 1 A ▼…Stanford Rosenberg Computing wants to establish an assembly line for producing a new product, the Personal Digital Assistant (PDA). The tasks, task times, and immediate predecessors for the tasks are as follows: Task Time (sec) Immediate Predecessor A 11 − B 15 A C 7 A D 4 B, C E 20 D Rosenberg's goal is to produce 175 PDAs per hour. a) The cycle time for the production of a PDA = nothing seconds (round your response to two decimal places). B) what's the minimum number of workstations in the assembly line? C) Can the minimum actually be reached when workstations are assigned?
- Klassen Toy Company, Inc., assembles two parts(parts I and 2): Part I is first processed at workstation A for15 minutes per unit and then processed at workstation B for330 PART 2 DESIGNING OPERATIONS10 minutes per unit. Part 2 is simultaneously processed at workstationC for 20 minutes per unit. Workstations B and C feed theparts to an assembler at workstation D, where the two parts areassembled. The time at workstation Dis 15 minutes.a) What is the bottleneck of this process?b) What is the hourly capacity of the process?An assembly plant for the Blood Pressure RX, a portableblood pressure device, has 400 minutes available daily in theplant for the device, and the average demand is 80 units per day.Final assembly requires 6 separate tasks. Information concerningthese tasks is given in the following table. a) Draw a precedence diagram of this operationb) Given the demand, what is the cycle time for this operation?c) What is the theoretical minimum number of workstations?f d) Assign tasks to workstations.e) What is the overall actual efficiency of the assembly line?Kiko Teddy Bear is a manufacturer of stuffed teddy bears. Kiko would like to be able to produce 40teddy bears per hour on its assembly line. The following information will assist in answering thequestions that follow:Task Information for Kiko Teddy BearWorkElementTask Description ImmediatePredecessorTask Time (inseconds)A Cut teddy bear pattern None 90B Sew teddy bear cloth A 75C Stuff teddy bear B 50D Glue on eyes C 20E Glue on nose C 15F Sew on mouth C 35G Attach manufacturer’s label B 15H Inspect and pack teddy bear D,E,F,G 40 d. What is the theoretical minimum number of workstations using the cycle time computed in” b “above? e. Assign tasks to workstations using the cycle time in “b” above. f. Calculate the efficiency and idle time percentage of the line.