1. Calculate the dc resistance in ohms per kilometer for an aluminum conductor with a 3 cm diameter.
2. Calculate the dc resistance in ohms per mile for a hard-drawn copper conductor with a 1 inch diameter. (Note that 1 mile = 1.609 km).
3. Calculate the inductive reactance of this line in ohms.
4. Assume that the 50 Hz ac resistance of the line is 5% greater than its dc resistance, and calculate the series impedance of the line in ohms per km.