A welding operation is being performed with voltage = 30 V and current = 100 A. The crosssectional area of the weld bead is 20 mm2. The work-piece and filler are of titanium for which of the specific energy of melting is 14 J/mm . Assuming a thermal efficiency of the welding process 70%, the welding speed (in mm/s) is (correct to two decimal places).

A welding operation is being performed with voltage = 30 V and current

1.	A welding operation is being performed with voltage = 30 V and current = 100 A. The crosssectional area of the weld bead is 20 mm2. The work-piece and filler are of titanium for which of the specific energy of melting is 14 J/mm . Assuming a thermal efficiency of the welding process 70%, the welding speed (in mm/s) is (correct to two decimal places).
A.	5.7
B.	2.1
C.	33.9
D.	7.5
Answer» E.

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