4. Digital Eye must design an assembly line to produce a new line of slim digital cameras.Assembling a single camera requires the completion of nine distinct tasks, andinformation about each of these tasks is provided below:TaskImmediate PredecessorsTask Duration (sec)ANone10 SECВA20A25В15EВFВ19GD, E25HС, F30H12This assembly line operates 8 hours a day to produce 576 digital cameras daily. DigitalEye uses the LPT rule to create the design. (Noteshaper Scenarios #27) Please show allyour work as I did in PowerPoints to get full credit.a. What is the cycle time of Digital Eye's assembly line, in seconds?b. How many workstations are required by this design?c. What tasks are done at which workstation?d. Which workstation has the maximum idle time?e. How efficient is this design?

Answered: 4. Digital Eye must design an assembly…

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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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…
(3) The following information is given about an assembly line. The desired output rate is 360 units per 8-hour day. Task Time (sec) Immediate Predecessor(s) A 30 - B 25 A C 40 A, B D 45 B E 25 B F 28 C, E G 16 D H 40 F, G a. How many stations are required for the most efficient balance you can achieve? b. Balance the line according to the most following tasks rule. c. What is the idle time per unit for your solution? d. Identify the bottleneck for your solution.
A company needs to rebalance a product layout for producing sweet sour lollipop wrap. They plan to use the assembly line for an output rate of 4 units per minute each day. The following table describes the tasks involved in the production of this product: Work Element Time (seconds) Immediate Predecessor(s) A 12 -- B 6 A C 8 A D 4 B E 7 B, C F 10 E G 6 D, F Determine how many stations are required for the line to produce the desired output. Select one: A. 5.0 workstations B. 4.0 workstations C. 3.0 workstations D. 3.5 workstations E. 4.5 workstations
Dr. Lori Baker, operations manager at Nesa Electro-nics, prides herself on excellent assembly-line balancing. She has been told that the firm needs to complete 96 instruments per24-hour day. The assembly-line activities are: TASK TIME (min) PREDECESSORSA 3 —B 6 —C 7 AD 5 A, BE 2 BF 4 CG 5 FH 7 D, EI 1 HJ 6 EK 4 G, I, J 50a) Draw the precedence diagram.b) If the daily (24-hour) production rate is 96 units, what is thehighest allowable cycle time?c) If the cycle time after allowances is given as 10 minutes, whatis the daily (24-hour) production rate?d) With a 10-minute cycle time, what is the theoretical minimumnumber of stations with which the line can be balanced?e) With a 10-minute cycle time and six workstations, what is theefficiency?f) What is the total idle time per cycle with a 10-minute cycletime and six workstations?g) What is the best workstation assignment you can makewithout exceeding a 10-minute cycle time, and what is itsefficiency?
Dr. Lori Baker, operations manager at Nesa Electronics, prides herself on excellent assembly-line balancing. She has been told that the firm needs to complete 96 instruments per 24-hour day. The assembly-line activities are: a) Draw the precedence diagram.b) Tf the daily (24-hour) production rate is 96 units, what is the highest allowable cycle time?c) If the cycle time after allowances is given as 10 minutes, what is the daily (24-hour) production rate?d) With a 10-minute cycle time, what is the theoretical minimum number of stations with which the line can be balanced?e) With a I 0-minute cycle time and six workstations, what is the efficiency?f) What is the total idle time per cycle with a I 0-minute cycle time and six workstations?g) What is the best workstation assignment you can make without exceeding a I 0-minute cycle time, and what is its efficiency?
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?
Professional Image Briefcases is an exclusive producer ofhandcrafted, stylish cases. The company assembles eachcase with care and attention to detail. This laborious processrequires the completion of the six primary work elementslisted here a. Construct a precedence diagram for the manufacturingof briefcases.b. Compute the flow time required for assembling onebriefcase and the cycle time necessary to assemble 50cases in a 40-hour week.c. Balance the line and compute its efficiency.d. How would you change the line to produce 80 casesper week?
Professional Image Briefcases is an exclusive producer ofhandcrafted, stylish cases. The company assembles eachcase with care and attention to detail. This laborious processrequires the completion of the six primary work elementslisted here.a. Construct a precedence diagram for the manufacturingof briefcases.b. Compute the flow time required for assembling onebriefcase and the cycle time necessary to assemble 50cases in a 40-hour week.c. Balance the line and compute its efficiency.d. How would you change the line to produce 80 casesper week? Work Element Precedence Time (min)A Tan leather — 30B Dye leather A 15C Shape case B 10D Mold hinges and fixtures — 5E Install hinges and fixtures C, D 10F Assemble case E 10
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: A) Determine the maximum and minimum cycle times.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. Submit an Excel file based on Chapter 6 Excel Template to indicate your computation.
An assembly line must be designed to produce 40 containers per hour. The following data give the necessary information Table 1 TASK IMMEDIATE PREDECESSOR TASK TIME (sec) A None 60 B A 12 C B 35 D A 55 E D 10 F E 50 G F, C 5 Draw the precedence diagram. ii. Compute the cycle time (in seconds) to achieve the desired output rate. iii. What is the theoretical minimum number of stations? iv. Assign the tasks to workstation? v. What is the efficiency of the line? PLEASE ANSWER THE FOLLOWING QUESTIONS: iV, & v.
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.

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