Rework Problem 4.50 if the diameter of each conductor is: (a) increased by $25 %$ to $1.875 \mathrm{~cm}$, (b) decreased by $25 %$ to $1.125 \mathrm{~cm}$, without changing the phase spacings. Compare the results with those of Problem 4.50.

Data From Problem 4.50:-

Calculate the conductor surface electric field strength in \(\mathrm{kV}_{\mathrm{rms}} / \mathrm{cm}\) for the singlephase line when the line is operating at \(20 \mathrm{kV}\). Also calculate the ground-level electric field strength in \(\mathrm{kV}_{\text {rms }} / \mathrm{m}\) directly under one conductor. Assume a line height of \(10 \mathrm{~m}\).