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In a single point turning tool, the side rake angle and orthogonal rake angle are equal. φ is the principal cutting edge angle and its range is 0° ≤ φ ≤ 90°. The chip flows in the orthogonal plane. The value of φ is closest to
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- 0°
- 45°
- 60°
- 90°
Correct Option: D
Side rake angle is equal to orthogonal rake angle when principle cutting edge angle become 90° and corresponding approach angle SCEA = 0°
