In horizontal milling process ............................ (up/down) milling provides better surface finish and .............................. Up/down ) milling provide longer tool life.

Component process

The thickness of the blank needed to produce, by power spinning a missile cone of thickness $$1.5mm$$ and half cone angle $$30deg$$

Two shafts $$A$$ and $$B$$ have their diameters specified as $$100 \pm 0.1\,\,mm$$ and $$0.1 \pm 0.0001\,\,mm$$ respectively. Which of the following statements is/are true