B D A E Question : (a) A Muscat Tools company manufactures toolkits and supplies to the local and overseas market within the GCC region. In the assembly line, the kits are packed in the tool boxes. The company produces the specified demand rate oftoolkit in 8 hours per day with tasks, description of tasks, and time for each task shown in Table Q2a. (0) Draw the precedence diagramand determine the cycle time, and number of workstations, [5] iii) Balance the line using the longesttask time rule, and determine the line efficiency. [5] Table Q2(a) Demand rate (units/day) 1200 Task Description Time (sec) Predecessors 15 B 9 C 7 D 7 A Open tool box and place on assembly line Place spanner in tool box Place spark plug spanner in toolbox Place screw driver in tool box Close intemal lid Place jack in tool box Place jack handle in tool bax Place polishing cloth in toolbox Close tool box 7 B.CD m F E 18 6 G E Page 2 10 F.GH Shrink wrap tool box 21 > Questions eady (b) A company is unableto satisfy customer demand for one of their products. The ratios for mixing the outputs from processes C, D andE are 2, 1 and 1 respectively. The ratio for the departments F and Gis 3 and 1, and the ratio for departments Handl is 4 and 1. Using Table Q2(b), Determine; (i) The system capacity and bottleneck, [4] (ii) How much system capacity can be gained by adding capacity to the bottleneck [2] Predecessors Table Q2(b) Department Capacity (liters/hour) 450 450 350 B D E 250 250 750 C, D and E F G H F, and G 300 950 350 1100 1400 J H and I K j