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EEE 415: ELECTRODYNAMICS & INSULATING MATERIALS
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| bet | 23/48 | | Sana | 02.01.2024 | | Hajmi | 327 Kb. | | #129611 |
Bog'liq BACHELOR OF SCIENCE ELECTRICAL ELECTRONICS ENGINEERING
Revision of Maxwell's Equations:Maxwell's equations, Laplace equation, Poisson's equation, Helmholtz equation and their solution in rectangular, cylindrical and spherical co-ordinates. Retarded potentials. Numerical methods in boundary value problems. Propagation of Uniform Plane Waves:Propagation of uniform plane waves in uniform dielectric, reflection and refraction and refraction of waves at dielectric boundaries. Phase velocity, group velocity wavelength and wave number. Polarisation: linear, circular and elliptical. Introduction to propagation in anisotropic media. Transmission line analogue of wave propagation. The concept of wave impedance. Introduction to Diffraction and Scattering: Fresnel and Fraunhoffer diffraction, geometrical theory of diffraction, scattering. Insulating Materials:Classification of insulators on the basis of thermal stability. Types of insulators; solids, liquids, gases. Mechanical, thermal and electrical properties of insulating materials. Gaseous insulation: ionisation and breakdown in gases (Townsend breakdown). Factors influencing breakdown voltages. Guided electromagnetic Waves: Basic equations of waves along uniforms systems. Basic wave types TEM, TE, TM. Field analysis and distributed parameter analysis of transmission lines. Rectangular and cylindrical waveguides. Surface waveguides, optical fibres, dielectric slab wave guides. Power transmission and attenuation. Wave velocities. Introduction to Antennas: Concept of radiation, some elementary antennas. Antenna parameters, thin wire antenna, cylindrical dipole antenna, halfwave dipole antenna, antenna arrays. Effect of the earth and nearby objects. Introduction to Electromagnetic Compatibility: Concept of electromagnetic wave interference and noise. Calculation of near and far fields, electromagnetic radiation standards. Atmospheric electricity. Shielding and earthing. Insulating Materials: Solid insulation. thermal breakdown in solids, breakdown due to gradual deterioration. Effects of voids. Liquid insulation. Gases dissolved in mineral oils. Ageing and faults,
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