1.a) An oil-insulated (ɛ,=2.5, Ed=60 kV/em) coaxial cylindrical electrode system has inner andouter cylinder radiuses as ri= 10 cm and R=30 cm, respectively. Determine the maximumfield stress for a test voltage of U = 200 kV.b) Design a uniformly-stressed coaxial cylindrical electrode system using three differentinsulating materials with relative dielectric constants 2.5, 4, and 6 (determine the layerthicknesses for the inner and outer radiuses of case-a). Calculate the maximum fieldstrength of the layers for a test voltage of U = 200 kV.c) Design a uniformly-stressed coaxial cylindrical electrode system using three differentinsulating materials with relative dielectric constants 2.5, 4, and 6, where the maximumlayer stresses are equal to the stress of case-a for the same test voltage, and the outercylinder radius is minimum (determine the layer thicknesses and the inner and outer radiusof the system).

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An oil-insulated (ɛ=2.5, Ed=60 kV/cm) coaxial cylindrical electrode system has inner and outer cylinder radiuses as ri= 10 cm and R=30 cm, respectively. Determine the maximum field stress for a test voltage of U = 200 kV.

An oil-insulated (ɛ=2.5, Ed=60 kV/cm) coaxial cylindrical electrode system has inner and outer cylinder radiuses as ri= 10 cm and R=30 cm, respectively. Determine the maximum field stress for a test voltage of U = 200 kV.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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Question

1.a) An oil-insulated (ɛ,=2.5, Ed=60 kV/em) coaxial cylindrical electrode system has inner and
outer cylinder radiuses as ri= 10 cm and R=30 cm, respectively. Determine the maximum
field stress for a test voltage of U = 200 kV.
b) Design a uniformly-stressed coaxial cylindrical electrode system using three different
insulating materials with relative dielectric constants 2.5, 4, and 6 (determine the layer
thicknesses for the inner and outer radiuses of case-a). Calculate the maximum field
strength of the layers for a test voltage of U = 200 kV.
c) Design a uniformly-stressed coaxial cylindrical electrode system using three different
insulating materials with relative dielectric constants 2.5, 4, and 6, where the maximum
layer stresses are equal to the stress of case-a for the same test voltage, and the outer
cylinder radius is minimum (determine the layer thicknesses and the inner and outer radius
of the system).

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