Two real written-test problems for IE executives, solved step by step: line and group efficiency and performance, pitch time, balancing ratio, throughput time, production achievement and thread cones for an order.
Factories often give IE candidates a written test with numbers. Here are two typical problems, solved step by step. Try them yourself first, then check.
| Line | Garment SMV | Workers | Left in OT | Production (10 h) | Lost time (min) | Bottleneck SMV |
|---|---|---|---|---|---|---|
| 1 | 18.65 | 73 | 27 | 1700 | 800 | 0.30 |
| 2 | 19.12 | 75 | 31 | 1630 | 620 | 0.33 |
| 3 | 20.55 | 71 | 25 | 1590 | 785 | 0.35 |
| 4 | 17.12 | 70 | 22 | 1810 | 665 | 0.28 |
Working day is 10 hours: 8 regular hours with all workers + 2 OT hours after some workers left.
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Efficiency is doing things right. Effectiveness is doing the right things.
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