The range of the helix angle of the twist drill is ________Question 5Select one:a.> 0 and < 90b.0-180c.> 90 and < 180d.> 180e.90-180
Question
The range of the helix angle of the twist drill is ________Question 5Select one:a.> 0 and < 90b.0-180c.> 90 and < 180d.> 180e.90-180
Solution
The correct answer is a. > 0 and < 90. The helix angle of a twist drill typically ranges between 0 and 90 degrees. This angle is important as it affects the rate of chip removal, the quality of the hole, and the tool's life span. A low helix angle is used for materials like brass
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