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| Q. |
What is the frequency of mixing chamber, consisting of gas and abrasives? |
| A. | 10 hz |
| B. | 30 hz |
| C. | 50 hz |
| D. | 70 hz |
| Answer» C. 50 hz | |
| Explanation: mixing chamber consisting of carrier gas and the abrasive grains, vibrates at a frequency of 50 hz. | |
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