MCQOPTIONS
Saved Bookmarks
| 1. |
What will be step ratio of headstock spindle for a lathe machine of following data?Maximum speed = 2100 rev/minMinimum speed = 70 rev/minNo. of speeds = 21 |
| A. | (30)1/9 |
| B. | (30)1/20 |
| C. | (30)1/21 |
| D. | (30)1/22 |
| Answer» C. (30)1/21 | |