A singl core cable of voltage 30 kv. The diameter of Conductor is 3 cm. The diameter of cable is 25 cm. This cable has Two layer of insulator having arelative permittivity 5-3 respectively of The ratio of maximum electric stress of maximum electric stress 8 First layer to the of second layer is 10 Find & 1- The thickness of each layers. 3- The voltage of each layers. §. Layers The saving in radius of cable if another ungrading cable has the Same maximum electric stress, Total village, Conductor diameter of grading cable.

66 KV sing care Cable has a drameter of conductor of 3 cm. The radius of cable is 10 cm. This Cable house Two relative permmitivity of insulation 6 and 4 respectively. If The ratio of maximum electric stress of first layer to the maximum eledric streep & second layer is s 1- find the village & each layers. 2- Min- electric stress J Cable 3- Compare the voltage of ungrading Cable has the same distance and relectric stresses.

Prelab Information 1. Laboratory Preliminary Discussion First-order Low-pass RC Filter Analysis The first-order low-pass RC filter shown in figure 1 below represents all voltages and currents in the time domain. It is of course possible to solve for all circuit voltages using time domain differential equation techniques, but it is more efficient to convert the circuit to its s-domain equivalent as shown in figure 2 and apply Laplace transform techniques. vs(t) i₁(t) + R₁ ww V₁(t) 12(t) Lic(t) Vout(t) = V2(t) R₂ Vc(t) C Vc(t) VR2(t) = V2(t) + Vs(s) Figure 1: A first-order low-pass RC filter represented in the time domain. I₁(s) R1 W + V₁(s) V₂(s) 12(s) Ic(s) + Vout(S) == Vc(s) Vc(s) Zc(s) = = VR2(S) V2(s) Figure 2: A first-order low-pass RC filter represented in the s-domain.