Q1. A high-voltage coaxial cable comprises two concentric copper conductors separated by a dielectric barrier made of FEP (Fluorinated Ethylene Propylene). The inner conductor is solid, having radius a = 2.4mm. The outer conductor has inner radius b = 14.7mm and thickness t = 2mm. The FEP dielectric has a relative permittivity of ε, = 2.1. a) The outer conductor is initially grounded, and a potential difference Vab = 25kV is applied. c) Referring to the coaxial cable of Q1.: i) ii) iii) If the materials used in its construction are non-magnetisable, calculate the cable inductance at low and high frequency. What characteristic impedance is seen by a propagating electromagnetic wave? It is found that the application requires a cable of a higher voltage rating, but it is vital that the characteristic impedance is maintained. How would you adapt the cable design to meet this requirement?

Q1. A high-voltage coaxial cable comprises two concentric copper conductors separated by a dielectric barrier made of FEP (Fluorinated Ethylene Propylene). The inner conductor is solid, having radius a = 2.4mm. The outer conductor has inner radius b = 14.7mm and thickness t = 2mm. The FEP dielectric has a relative permittivity of ε, = 2.1. a) The outer conductor is initially grounded, and a potential difference Vab = 25kV is applied. c) Referring to the coaxial cable of Q1.: i) ii) iii) If the materials used in its construction are non-magnetisable, calculate the cable inductance at low and high frequency. What characteristic impedance is seen by a propagating electromagnetic wave? It is found that the application requires a cable of a higher voltage rating, but it is vital that the characteristic impedance is maintained. How would you adapt the cable design to meet this requirement?

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter4: Transmission Line Parameters

Section: Chapter Questions

Problem 4.17P: Determine the GMR of each of the unconventional stranded conductors shown in Figure 4.30. All...

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