Exercise 5: An air line is a transmission line for which air is the dielectric material present between the two conductors , which renders G= 0. In addition, the conductors are made of a material with high conductivity so that R = 0. For an air line with characteristic impedance of 500 and phase constant of 20 rad/m at 700MHZ, find the inductance per unit length and capacitance per unit length of the line.

Q: A poor conductor is characterized by a conductivity 200 (S/m) and permittivity € = 460. At what…

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Q: 3. The three conductors A, B and Cof a 3-0 line are arranged in a horizontal plane with DA = 2 m and…

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Q: 2- Consider the three dielectric materials listed in the below table. At a given voltage, which…

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Q: The conductors of a three phase transmission line are symmetrically arranged in a triangle. If the…

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Q: The conductors of a three phase transmission line are symmetrically arranged in a triangle. If the…

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Q: 2. A 200 km, 3-phase transmission line has its conductors placed at the corners of an equilateral…

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Q: The conductors of a 66 kV, 50 Hz three phase transmission line are suspended horizontally as shown…

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Q: What is the width when Zo is 125 ohms?

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Dielectric Breakdown

A dielectric is a material with low electrical conductivity and so is classified as an insulator. Dielectric materials are used to block the flow of electricity through them, allowing them to behave as an insulators. They can also be used to store electric charge or improve capacitance.Dielectrics have no free electrons for conduction because electrons are tightly bound to the nucleus. Because dielectrics contain a small number of electrons for electrical conductivity, they have a dipole. The two primary roles of dielectrics in electrical devices are insulation and electrical energy storage. An electric field polarizes the dielectric, and the polarization of the molecules allows dielectric materials to store charge.