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     EduGorilla 
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    During a steady state gas metal are welding with direct current electrode positive, the welding current, voltage and welding speed are 150A, 30V, 6 m/min. A metallic wire electrode of diameter 1.2 mm is being fed at a constant rate of 12 m/min. The density, specific heat and melting temperature of the wire electrode are 7000 kg/m3, 500 J/kg, 1530 °C. Assuming ambient to be 30 °C and neglect latent heat of melting, further consider that of the total electrical power is available for melting. The melting efficiency of the wire electrode (%) is

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