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A small electrical appliance is to be produced on a single model assembly line. The tasks, their processing times and precedence relationships are listed in Table Q3. The line is to be designed to operate 5 shifts/week and 7.5 hours/shift, for a weekly demand of 2250 units. Table Q3 Task Task description Processing Immediate No time predecessor (minutes) A 0.2 B Place frame in workholder and clamp Assemble plug, gromment to power cord Assemble brackets to frame 0.4 0.7 A D 0.1 A,B E 0.3 B Wire power cord to motor Wire power cord to switch Assemble mechanism plate to bracket Assemble blade to bracket F 0.11 G 0.32 H Assemble motor to brackets 0.6 1 Aline blade and attach to motor 0.27 C D F, G, H , J Assemble switch to motor bracket 0.38 K 0.5 1,J Attach cover, inspect, and test Place in tote pan for packing L 0.12 K contd./ MEE 3014/2021 Q3. contd (a) Draw the precedence diagram. (b) What is the workstation cycle time? (c) What is the theoretical minimum number of workstations? (d) Assign tasks to workstations using the Ranked Positional Weight method. (e) What is the actual efficiency of the balanced line? [1 mark] [1 mark] [1 mark] [6 marks] [1 mark] na