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

सपाट स्थिति वेल्डिंग में इलेक्ट्रोड का कोण क्या होना चाहिए?

1
50° से 70°
2
60° से 70°
3
70° से 80°
4
80° से 90°
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