9 The following tasks are to be performed on an assembly line: TASKS THAT MINT PRICHDE TASK SucONDS A 20 20 D 22 The workday is seven hours long. Demand for completed product is 750 per day. a. Find the cycle time. b. What is the theoretical number of workstations? e. Draw the precedence diagram. d. Balance the line using the longest-operating-time rule. e. What is the efficiency of the line balanc ed as in d? f. Suppose that demand rose from 750 to 800 units per day. What would you do? Show any amounts or calculations. g. Suppose that demand rose from 750 to 1,000 units per day. What would you do? Show any amounts or calculations.

9 The following tasks are to be performed on an assembly line: TASKS THAT MINT PRICHDE TASK SucONDS A 20 20 D 22 The workday is seven hours long. Demand for completed product is 750 per day. a. Find the cycle time. b. What is the theoretical number of workstations? e. Draw the precedence diagram. d. Balance the line using the longest-operating-time rule. e. What is the efficiency of the line balanc ed as in d? f. Suppose that demand rose from 750 to 800 units per day. What would you do? Show any amounts or calculations. g. Suppose that demand rose from 750 to 1,000 units per day. What would you do? Show any amounts or calculations.

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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The City Commission of Nashville has decided to build a botanical garden and picnic area in the heart of the city for the recreation of its citizens. The precedence table for all the activities required to construct this area successfully is as follows: Code Description A BCDEFGH G I Find location; determine resource requirements Requisition of lumber and sand Dig and grade Saw lumber into appropriate sizes Position lumber in correct locations Nail lumber together Put sand in and under the equipment Put dirt around the equipment Put grass all over the garden, landscape, paint Time (hrs) 20 60 100 35 20 10 20 30 Immediate Predecessor(s) None A A B D, C E F F- G, H Refer to the legend for the activity that corresponds to each code. Using the line drawing tool, draw a Gantt chart for activities E through I of the project.
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.
layout The grouping of equipment by the operations needed to perform similar work for part families need O a. cellular O b. functional manufacturing Oc. product O d. fixed-position O e. process NEXT PAGE OUS PAGE 321 82° acer F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 PrtSc Pause 国 Scr Lk SysRq Break # 2$ % 4. 7 V 8 9. Y ! U 10 * DIF1 G YHi K 11 L. M .. .- •1 6 47
A shop works a 400-minute day. The manager of the shop wants an output of 200 units per day for the assembly line that has the elemental tasks shown in the table. Do the following:a. Construct the precedence diagram.b. Assign tasks according to the most following tasks rule. Break ties with the greatest positional weight rule.c. Assign tasks according to the greatest positional weight rule. Break ties with the most following tasks rule.d. Compute the balance delay for each rule. Which one yields the better set of assignments in this instance? TaskImmediatePredecessorTaskTimea — 0.5b a 1.4c a 1.2d a 0.7e b, c 0.5f d 1.0g e 0.4h g 0.3i f 0.5j e, i 0.8k h, j 0.9m k 0.3