Question: One thousand circular mils or (1 mathrm{kcmil}) is sometimes designated by the abbreviation MCM. Data for commercial bare-aluminum electrical conductors lists a (60 mathrm{~Hz}) resistance

One thousand circular mils or \(1 \mathrm{kcmil}\) is sometimes designated by the abbreviation MCM. Data for commercial bare-aluminum electrical conductors lists a \(60 \mathrm{~Hz}\) resistance of \(0.0080 \mathrm{ohm}\) per kilometer at \(75^{\circ} \mathrm{C}\) for a 793-MCM AAC conductor.

(a) Determine the cross-sectional conducting area of this conductor in square meters.

(b) Find the \(60 \mathrm{~Hz}\) resistance of this conductor in ohms per kilometer at \(50^{\circ} \mathrm{C}\).

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