Workshop Technology
For gas welding, the pressure desired at the welding torch for acetylene is

70 to 280 kN/m²
280 to 560 kN/m²
560 to 840 kN/m²
7 to 103 kN/m²

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Workshop Technology
For arc welding

Direct current is used
Alternating current with high frequency is used
Alternating current with low frequency is used
Any one of these

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