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| Q. |
What happens to the Electro discharge machining process under unfavourable working conditions? |
| A. | will remain stable |
| B. | explosion may occur |
| C. | machining rate increases |
| D. | nothing happens |
| Answer» B. explosion may occur | |
| Explanation: explosion occurs if electro discharge machining is done under unfavourable process variables and conditions. | |
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