Piercing is an operation of cutting

Question

Options:

A . A cylindrical hole in a sheet of metal by the punch and the die

B . A hole (other than cylindrical) in a sheet of metal by the punch and the die

C . A flat sheet to the desired shape

D . A number of holes evenly spaced in a regular pattern on a sheet of metal

Answer: Option B

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Question 8. Which of the following methods can be used for manufacturing 2 meter long seamless metallic tubes?....

Question 9. In arc welding, the temperature of heat produced by the electric arc is of the order of....

Question 10. The adhesiveness is the property of sand due to which....

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