Three Phase Circuits - I Three phase circuits : Phase sequence - Star and delta connection - Relation between line and phase voltages and currents in balanced systems - Analysis of balanced three phase circuits - Measurement of active and reactive power in balanced three phase systems. Three Phase Circuits - II Analysis of three phase unbalanced circuits - Loop method - Application of Millman's theorem - Star delta transformation technique - Two wattmeter method of measurement of three phase power. D.C. Transient Analysis Transient response of R-L, R-C, R-L-C series circuits for D.C. excitation - Initial conditions - Solution method using differential equation and Laplace transforms, Response of R-L and R-C networks to pulse excitation. A.C. Transient Analysis Transient response of R-L, R-C, R-L-C series circuits for sinusoidal excitations - Initial conditions - Solution method using differential equations and Laplace transforms. Two Port Networks - I Two port network parameters - Z, Y, ABCD and hybrid parameters and their relations. Two Port Networks - II Concept of transformed network - 2 port network parameters using transformed variables - Cascaded networks. Fourier Analysis of A.C. Circuits Fourier theorem - Trigonometric form and exponential form of Fourier series - Conditions of symmetry - Line spectra and phase angle spectra - Analysis of electrical circuits to non sinusoidal periodic waveforms. Fourier Transforms Fourier integrals and Fourier transforms - Properties of Fourier transforms and application to electrical circuits.