A small electrical appliance is to be produced on a single-model assembly line. The individual tasks of assembling the product are shown in Table 2. The table also lists the times for each task and the precedence order in which they must be performed. The line is to be balanced for an annual demand of 100,000 units/year. The line will operate 50 week/ year, 5 shifts/ week, and 7.5 hours/ shift. Table 2 Task Task Description Task Time Must be Preceded (min) By Place frame and clamp 0.2 2 Assemble plug, grommet to power cord 0.4 3 Assemble brackets to frame 0.7 4 Wire power cord to motor 0.4 1,2 5 Wire power cord to switch 0.3 2 6 Assemble mechanism plate to bracket 0.11 3 7 Assemble blade to bracket 0.32 3 8 Assemble motor to brackets 0.6 3,4 9 Align blade and attach to motor 0.27 6, 7, 8 10 Assemble switch to motor bracket 0.38 5,8 11 Attach cover, inspect, and test 0,5 9,10 12 Place in tote pan for packing 0.12 11

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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i. Draw the precedence diagram.
ii. Calculate the cycle time and theoretical number of required workstations.
iii. Assign tasks to workstation using greatest positional weight rule.
iv. Determine the efficiency of your line balance.

A small electrical appliance is to be produced on a single-model assembly line. The
individual tasks of assembling the product are shown in Table 2. The table also lists
the times for each task and the precedence order in which they must be performed. The
line is to be balanced for an annual demand of 100,000 units/year. The line will operate
50 week/ year, 5 shifts/ week, and 7.5 hours/ shift.
Table 2
Task
Task Description
Task Time Must be Preceded
(min)
By
Place frame and clamp
0.2
2
Assemble plug, grommet to power cord
0.4
3 Assemble brackets to frame
0.7
4
Wire power cord to motor
0.4
1,2
5
Wire power cord to switch
0.3
2
6 Assemble mechanism plate to bracket
0.11
3
7
Assemble blade to bracket
0.32
3
8
Assemble motor to brackets
0.6
3,4
9
Align blade and attach to motor
0.27
6, 7, 8
10
Assemble switch to motor bracket
0.38
5,8
11
Attach cover, inspect, and test
0,5
9,10
12
Place in tote pan for packing
0.12
11
Transcribed Image Text:A small electrical appliance is to be produced on a single-model assembly line. The individual tasks of assembling the product are shown in Table 2. The table also lists the times for each task and the precedence order in which they must be performed. The line is to be balanced for an annual demand of 100,000 units/year. The line will operate 50 week/ year, 5 shifts/ week, and 7.5 hours/ shift. Table 2 Task Task Description Task Time Must be Preceded (min) By Place frame and clamp 0.2 2 Assemble plug, grommet to power cord 0.4 3 Assemble brackets to frame 0.7 4 Wire power cord to motor 0.4 1,2 5 Wire power cord to switch 0.3 2 6 Assemble mechanism plate to bracket 0.11 3 7 Assemble blade to bracket 0.32 3 8 Assemble motor to brackets 0.6 3,4 9 Align blade and attach to motor 0.27 6, 7, 8 10 Assemble switch to motor bracket 0.38 5,8 11 Attach cover, inspect, and test 0,5 9,10 12 Place in tote pan for packing 0.12 11
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