A gas tungsten arc-welding operation is performed at a current of 500 A and voltage of 20 V. The melting factor f2 = 0.5, and the unit melting energy for the metal Um = 10 Jmm-3. Calculate the volume of metal welded? (Heat transfer factor is 0.7)

A gas tungsten arc-welding operation is performed at a current of 500

1.	A gas tungsten arc-welding operation is performed at a current of 500 A and voltage of 20 V. The melting factor f2 = 0.5, and the unit melting energy for the metal Um = 10 Jmm-3. Calculate the volume of metal welded? (Heat transfer factor is 0.7)
A.	350mm/sec
B.	950mm/sec
C.	450mm/sec
D.	550mm/sec
Answer» B. 950mm/sec

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A gas tungsten arc-welding operation is performed at a current of 500 A and voltage of 20 V. The melting factor f2 = 0.5, and the unit melting energy for the metal Um = 10 Jmm-3. Calculate the volume of metal welded? (Heat transfer factor is 0.7)

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