Workshop Technology
During drawing operation, the states of stress in cup would include

Compressive stress in the flange
None of these
Both (A) and (B)
Tensile stress in the wall

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Workshop Technology
The welding set up is said to have straight polarity, when

Work is connected to the positive terminal and the electrode holder is earthed
Work is connected to the positive terminal and the electrode holder to the negative terminal
Work is connected to the negative terminal and the electrode holder is earthed
Work is connected to the negative terminal and the electrode holder to the positive terminal

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