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Exam I - Review Questions- KEY2

# Exam I - Review Questions- KEY2 - Review Question 2 For the...

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Review Question 2 For the precedence diagram shown here, task times are in seconds. Determine Rank positional weights (RPW) and Smaller Processing Time order (SPT) order. ……………………………………………………………………………………………. Solve the problem with the RPW rule for a target cycle time of 58 (sec/unit). Use alphabetical order as a tie-breaker if needed. Total task time = 168 sec. ……………………………………………………………………………………………………… Show the layout and calculate the line efficiency (round off to 2 decimal places) Effective CT = 58 sec / unit Efficiency = 100 * 168 / (3 * 58) = 96.55% Task A B C D E F G Weight 87 136 75 55 30 35 20 RPW order B A C D F E G SPT order E F G B C A D Station Tasks Cumulative St. time Eligible tasks I B, A 26, 58 B,A / A,C / C, D II C, F, E 30, 45, 55 C,D / D,F,E / D,E / D III D, G 35, 55 D / G A 32 B 26 C 30 D 35 E 10 G 20 F 15 2, 1 58 3, 6, 5 55 4, 7 55

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Review Question 3 Calculate aggregate requirement in terms of the standard model (E).
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