engineering recuitment DRDO Technician A 2022 Mock Test Series (Tier I) Fitter Joining Welding

How much gas flow rate is required to weld a butt joint with 0.8 mm dia MS filler rod of wire feed rate 3-4 m/min at 18 to 20 volts?

1

6 to 8 Lpm

2

8 to 10 Lpm

3

10 to 12 Lpm

4

12 to 14 Lpm

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