Gear hobbing produces more accurate gears than milling

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Gear hobbing produces more accurate gears than milling because in hobbing

1. there is a continuous indexing operation
2. pressure angle is larger than in milling
3. hob and work piece both are rotating
4. a special multi-tooth cutter (hob) is used

Correct Option: D

Gear hobbing is generating process and gear milling is gear cutting process.