Which of the following holds true for electron beam machining?

1.	Which of the following holds true for electron beam machining?
A.	This process does not generate burr
B.	Holes having length/diameter ratio as high as 50 can be machined by this process
C.	In electron beam gun, magnetic lens is used to diverge the beam
D.	Electron beam is accelerated by electromagnetic coils
Answer» B. Holes having length/diameter ratio as high as 50 can be machined by this process

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Which of the following holds true for electron beam machining?

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