Example

The power source in a particular welding setup can be transferred to the work surface with a heat transfer factor $\backslash (=0\mathrm{.}7\backslash ).$ The metal to be welded is low carbon steel, whose melting temperature is $\backslash (1510^\{\backslash$circ$\}\backslash$mathrm$\{$C$\}\backslash ).$ The melting factor in the operation is $0\mathrm{.}55.$ A continuous fillet weld is to be made with a crosssectional area $\backslash (=20\backslash$mathrm$\{$~mm$\}^\{2\}\backslash )$ at a travel speed of $\backslash (7\mathrm{.}5\backslash$mathrm$\{$~mm$\}/\backslash$mathrm$\{$s$\}\backslash ).$ Determine the required power source at which the welding operation can be accomplished.