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| Q. |
In the following ratios of metal dissolved amounts, which one represent the current efficiency? |
| A. | observed to theoretical |
| B. | theoretical to observed |
| C. | all of the mentioned |
| D. | none of the mentioned |
| Answer» A. observed to theoretical | |
| Explanation: in electrochemical machining, current efficiency is the ratio of observed amount of metal dissolved to the theoretical amount of metal dissolved. | |
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