aws cwi questions and answers pdf

Q:-Which of the following welding processes. Uses to resistance spot welding?

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1. Electro slag welding
2. Resistance spot welding
3. Tig
4. Mag


Q:-With reference to the various grades of stainless steel which of the following statement is true?

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1. They are all nonmagnetic
2. Only certain grades can be used for service at a very low temperature
3. They are all 100 ar for the mag
4. They are all very high thermal conductivity