If the total efficiency is 0.35 in arc welding. Then what is the welding speed in mm/sec if the cross-sectional area is 5mm2, welding power is 2 kW and the heat required in melting the metal is 100 J/mm3.
A)1.4
B)14
C)1400
D)140

Question

Quizplus · Accepted Answer

The welding speed (v) can be calculated using the formula: v = (η * P) / (A * H), where η is the efficiency (0.35), P is the power (2000 W or 2 kW), A is the cross-sectional area (5 mm²), and H is the heat required per unit volume (100 J/mm³). Substituting the given values: v = (0.35 * 2000) / (5 * 100) = 1.4 mm/sec.

If the Total Efficiency Is 0