Exam (elaborations)
DML Test Questions And Answers 2022/2023
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If the cutting speed (CS) for low-carbon steel is 9-, and the formula for rpm is (CSx4)/D, what should the rpm of the spindle of a drill press be for a 1/8 in diameter high-speed twist drill? For a .750 in diameter drill? - Answer - The rpm for the 1/8in twist drill should be 2880, and for the 3/4-...
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