OBJECTIVE: On completing the course, the students will be able to apply the laws of electrostatic and electromagnetic in electrical machine theory and power line parameter calculations.
Electric charges - Coulomb's Law - Electric Field Intensity - Linear, Surface and Volume charge density - Gauss Law and its application - Electric Scalar Potentials and potential difference - Potentials due to uniformly charged disc and uniformly charged line, potentials between two coaxial cylinders and between two conducting spherical shells - Electric field lines and equipotential contours - Potential gradient and electric field due to electric dipoles - Conservative nature of electric field.
Dielectric boundaries - Capacitance - Capacitance of system of conductors - Overhead lines and underground cables - Methods of images and its application - Electrostatic energy and energy density -Force between charged conductors - Dielectric strength and breakdown. Divergence and curl of vector fields - Divergence theorem - Stoke's theorem - Solutions of Electrostatic problems - Examples on Laplace's equation.
Magnetic field intensity and magnetic flux density - Biot Savarat law - Force between current carrying wires. Torque on closed circuits - Ampere's law - Magnetic scalar and vector potentials - Boundary conditions at magnetic surfaces.
Faraday's law of electromagnetic induction - Inductor and inductance - Inductance of solenoids, toroids, transmission lines and cables - Mutual inductance - Inductors in series and parallel - Energy stored in magnetic field - Pull of an electromagnet - magnetic circuits.
Maxwell’s equations - Equation of continuity - Displacement current - Maxwell’s equation in point and integral forms - The wave equations - Uniform plane waves - Relation between electric and magnetic field intensities in a uniform plane wave - Poynting vector - Poynting theorem.
