1. Shear on the punch reduces the maximum cutting force. |
2. Shear increases the capacity of the press needed. |
3. Shear increases the life of the punch. |
4. The total energy needed to make the cut remains unaltered due to provision of shear. |
A) 1 and 2
B) 1 and 4
C) 2 and 3
D) 3 and 4.
Correct Answer: B
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