Question

In arc welding, the arc length should be equal to (a) 4.5 times the rod diameter (b) 3 times the rod diameter (c) 1.5 times the rod diameter (d) rod diameter

Answer 1

Answer:(d) rod diameter

Explanation:

Answer 2

To get the optimum size of the weld bead, Arc Length should be equal to the rod diameter. ( L = D ) [ Option - d ]

• In general terms, the Arc length should be from a minimum of 4 mm to a maximum of 6 mm.
• To get the optimum or perfect weld bead, the Arc length should be exactly equal to the diameter of the rod ( L = D ).
• If the Arc length is less than the diameter of the rod ( L < D ), then the size of the weld bead becomes larger than the optimum size.
• If the Arc length is greater than the diameter of the rod ( L > D ), then the size of the weld bead becomes smaller than the optimum size.
• Therefore, the prescribed Arc Length is equal to Rod Diameter to get the optimum size of the weld bead ( D = L ).

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