A coaxial cable has the following specifications: a = 1.0mm, b = 3.2mm, spacer er = 2.1 The outer conductor is earthed and has thickness 0.2mm. The inner conductor is raised to a potential of 1kV, and balanced opposing charges allowed to accumulate on the conductor surfaces. (i) Show that the charge per unit length deposited on each conductor is approximately 100nC m (ii) Calculate the magnitude of the electric field IE| at radial positions 0.5mm, 1.0mm, 2mm, 3.2mm and 5mm from the midpoint. (ii) Sketch plots of |E](r) and $(r) with increasing radial distance from the cable axis.
A coaxial cable has the following specifications: a = 1.0mm, b = 3.2mm, spacer er = 2.1 The outer conductor is earthed and has thickness 0.2mm. The inner conductor is raised to a potential of 1kV, and balanced opposing charges allowed to accumulate on the conductor surfaces. (i) Show that the charge per unit length deposited on each conductor is approximately 100nC m (ii) Calculate the magnitude of the electric field IE| at radial positions 0.5mm, 1.0mm, 2mm, 3.2mm and 5mm from the midpoint. (ii) Sketch plots of |E](r) and $(r) with increasing radial distance from the cable axis.
Related questions
Question
 and $(r) with increasing radial distance
from the cable axis.
(iv) The dielectric strength of the spacer is 20kV/mm. Calculate the
maximum operating voltage of the cable, allowing for a safety
margin of 5:1](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc793ee27-08ae-4cc1-8772-118e18eac9c1%2F8f9af9ec-6e6e-46a3-85e1-a05d0b64680c%2Fgbu7mgn_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A coaxial cable has the following specifications:
a = 1.0mm, b = 3.2mm, spacer tr = 2.1
The outer conductor is earthed and has thickness 0.2mm. The inner
conductor is raised to a potential of 1kV, and balanced opposing
charges allowed to accumulate on the conductor surfaces.
(i) Show that the charge per unit length deposited on each
conductor is approximately 100nC m
(ii) Calculate the magnitude of the electric field JE| at radial
positions 0.5mm, 1.0mm, 2mm, 3.2mm and 5mm from the
midpoint.
(iii) Sketch plots of E](r) and $(r) with increasing radial distance
from the cable axis.
(iv) The dielectric strength of the spacer is 20kV/mm. Calculate the
maximum operating voltage of the cable, allowing for a safety
margin of 5:1
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps with 2 images
