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The following data refers to the study conducted for an operation. Table shows actual time for the elements in minutes.
written 5.9 years ago by
ishandaftardar
• 170
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modified 3.0 years ago
by
sagarkolekar
★ 11k
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i) Element no. 2 is machine element.
ii) Consider observation as abnormal & delete the same if they are more than 20% of average time of the element.
iii) Take performance rating as 110.
iv) Assume personal & fatigue allowance as 29% of the normal time.
Estimate the basic time & standard time for the operation.
| Elements | Cycle (minutes) | |||
|---|---|---|---|---|
| 1 | 3.5 | 3.4 | 3.3 | 3.5 |
| 2 | 4.5 | 4.6 | 4.5 | 4.5 |
| 3 | 2.4 | 2.2 | 2.3 | 2.3 |
| 4 | 1.5 | 1.6 | 3.5 | 1.6 |
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