If worm helix angle is 30⁰, then worm should have at least ___ threads.
A. 5
B. 6
C. 7
D. 8
Answer:A
If worm helix angle is 30⁰, then worm should have at least ___ threads.
A. 5 B. 6 C. 7 D. 8
Explanation: The permissible helix angle is 6⁰ and hence there should be at least five threads i.e. 30/6.