

MCQOPTIONS
Saved Bookmarks
1. |
When a double –threaded screw is made to turn 120 degrees about axis. How much the screw advances through axis? |
A. | 1⁄3 of pitch of helix |
B. | 1⁄3 of pitch of screw |
C. | 1⁄4 of pitch of helix |
D. | The advancement is equal to pitch of helix. |
Answer» B. 1⁄3 of pitch of screw | |