Q.

           grades wire are used in automatic re-threading mechanisms.

A. malleable
B. softer
C. harder
D. commercial
Answer» C. harder
Explanation: the harder grades are used in automatic re-threading mechanisms and also if the machined shapes contain high flat surfaces. hard wires resist change in direction and for that reason are likely to produce nice flat surfaces.
1.9k
0
Do you find this helpful?
8

Discussion

No comments yet