Consider t fcowing parameters in a steady state gas metal arc welding with DC positiveelectrode polarity:Welding speed:8 m/minWelding voltage : 40VElectrode diameter : 1.5 mmElectrode feed rate : 14 m/minDensity of electrode : 8000 kg/m3Specific heat of electrode : 600 J/kg-KMelting temperature of electrode : 1580°CLatent heat of electrode : 265.6 kJ/kgAmbient temperature : 30°CElectrical efficiency : 65%Melting efficiency : 40%The required welding current is(a) 620 Amp(b) 295 Amp(c) 482 Amp(d) 380 Amp

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Engineering

Mechanical Engineering

of electrode : 600 J/kg-K erature of elect ode 1530°C

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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Concept explainers

Thermodynamic Relations

Thermodynamics is the division of physics that deals with the transfer of any kind of energy, whether it be heat, temperature, or work, from one object to another.

Question

Consider t fcowing parameters in a steady state gas metal arc welding with DC positive
electrode polarity:
Welding speed:8 m/min
Welding voltage : 40V
Electrode diameter : 1.5 mm
Electrode feed rate : 14 m/min
Density of electrode : 8000 kg/m3
Specific heat of electrode : 600 J/kg-K
Melting temperature of electrode : 1580°C
Latent heat of electrode : 265.6 kJ/kg
Ambient temperature : 30°C
Electrical efficiency : 65%
Melting efficiency : 40%
The required welding current is
(a) 620 Amp
(b) 295 Amp
(c) 482 Amp
(d) 380 Amp

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