Use the precedence diagram above. The cycle time is 80 seconds. The layout is: WS # 1 - AC, WS #2 - BD, WS #3 - FEG, WS #4 - HJ What would be the idle time for this line?
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- MGT-314 (Operations Management) MCQ: 1. Tesla is launching a new model of their cars. It is known as the Tesla-model X. Their production facility in Chicago cannot fit the assembly line needed for making the new model. They bought robots, tools, and materials to expand the manufacturing facility. This assembly line is only going to make model-X's and no other models. Their layout is: a) Services Layout b) Product Layout c) Fixed Position Layout d) Process Layout 2. A country is only as strong as its citizens. Due to Bangladesh being a third world country, the crisis is everywhere. With a massive number of people believing in hard work for a minimum wage, these blue-collar employees are having the harshest time surviving this countrywide condition. They simply don't have the means to withstand this situation and that is where the government comes in to aid these people with essentials such as food and equipment (Tran) which will help them to stay afloat from this pandemic. While…To meet holiday demand, Alex's Pie Shop requires a production line that is capable of producing 50 pecan pies per week, while operating only 40 hours per week. There are only four steps required to produce a single pecan pie with respective processing times of 5 minutes, 5 minutes, 45 minutes, and 15 minutes. a. What should be the line's cycle time? b. What is the smallest number of workstations Alex could hope for in designing the line considering this cycle time? c. Suppose that Alex finds a solution that requires only four stations. What would be the efficiency of this line?The three-station work cell illustrated in Figure S7.7has a product that must go through one of the two machines atstation 1 {they are parallel) before proceeding to station 2. a) What is the bottleneck time of the system?b) What is the bottleneck station of this work cell?c) What is the throughput time?d) If the firm operates I 0 hours per day, 5 days per week, what isthe weekly capacity of this work cell?
- The trim line at PW is a small subassembly line that, alongwith other such lines, feeds int1, o the final chassis line.The entire assembly line, which consists of more than 900workstations, is to make PW’s new E cars. The trim line itselfinvolves only 13 work elements and must handle 20 cars perhour. Work-element data are as follows:Work Element Time (Sec) Immediate Predecessor(s)A 2.4 NoneB 0.5 NoneC 2.1 NoneD 1.8 CE 1.1 BF 0.9 A G 2 AH 0.7 FI 0.7 DJ 1.8 H, EK 1.3 JL 1.9 GM 1.1 L, I, Ka. Draw a precedence diagram.b. What cycle time (in minutes) results in the desired outputrate?c. What is the theoretical minimum number of stations?d. Use the longest work element decision rule to balance theline and calculate the efficiency of your solution.e. Use the most followers work element decision rule tobalance the line and calculate the efficiency of yoursolution.The three-station work cell at Pullman Mfg., Inc.is illustrated in Figure S7.8. It has two machines a t station I inparallel (i.e., the product needs to go through only one of the twomachines before proceeding to station 2). a) What is the throughput time of this work cell?b) What is the bottleneck time of this work cell?c) What is the bottleneck station?d) If the firm operates 8 hours per day, 6 days per week, what isthe weekly capacity of this work cell?Discuss the main principles of the theory of constraints (TOC)?
- For remaining questions consider the line balancing situation below. Task Time Immediate Task A (minutes) 10 Predecessors ---- - В 4 A 8 А,В 3 E 9 C F G E,F G 8. H 7 Wage Rate = $12 per hour Daily requirement = 20 The production line currently operates with the line balance shown below. Station 1 Station 2 Station 3 Station 4 А-В C-E D-F G-Ha) 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?Arrange the eight departments shown in the accompanying Muther grid into a 2 × 4 format. Note: Department 1 must be in the location shown.
- Consider an assembly line such as the burrito assembly line at Chipotle Mexican Grill. During slow times of the day, one server can handle assembly, but during very busy times, having many servers would be prudent. Explain why either approach wouldn’t work all the time, and the benefit ofmatching the number of servers to the pace of customer arrivals.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 A. А, В В E 4 H D, E 1 H. 6. E 4 G, I, JThe table below defines the precedence relationships and element times for a new assembled product. Annual demand for the product will be 126,000 units. The uptime efficiency-96%. The line will operate one 8 hours-shift/day, 6 shifts/wk. The repositioning time is 0.1 min. Manning level is 1.0 for all stations. Work Te (min) Immediate Work T.(min) Immediate element predecessors element predecessors 0.5 0.6 3 2. 0.3 1 7. 0.4 4,5 3 0.8 8. 0.5 3,5 4 0.2 9. 0.3 7,8 0.1 10 0.6 6,9 Determine (a) Available service time (b) Actual number of workers/stations using the Most following tasks Rule (c) Total Ideal Time (d) Ideal time of station # 2 (e) Repositioning efficiency () Line Balance efficiency (g) Balance delay (h) Overall Labor efficiency