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Q. |
What is the frequency of the pulse of electrons used in EBM process? |
A. | 10 hz |
B. | 102 hz |
C. | 103 hz |
D. | 104 hz |
Answer» D. 104 hz | |
Explanation: a pulsed electron beam at 104 hz reduces the temperature of the work piece outside the region being machined. |
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