MCQOPTIONS
Saved Bookmarks
| 1. |
If α is switch angle and is radius of the turnout, the length of the tongue rail, is |
| A. | sin α |
| B. | tan α |
| C. | R sin α/2 |
| D. | R tan α/2 |
| E. | R cos α/2 |
| Answer» E. R cos α/2 | |