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Which of the following lenses are used for refocussing the electrons in EBM process?(a) Magnetic lens(b) Electronic lens(c) Magnetic & Electronic lens(d) None of the mentionedThis question was posed to me in a job interview.My question comes from Electronbeam Machining-Introduction, Equipment and Material removal topic in portion Thermal Processes of Advanced Machining |
Answer» The correct CHOICE is (c) Magnetic & Electronic lens |
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