About the course

UNIT I

DC Circuits: Passive circuit components, Basic laws of Electrical Engineering, Temperature Resistance Coefficients, voltage and current sources, Series and parallel circuits, power and energy, Kirchhoff’s Laws, Nodal & Mesh Analysis, delta-star transformation, superposition theorem, Thevenin’s theorem, Norton’s theorem, maximum power transfer theorem, Time domain analysis of first Order RC & LC circuits.

UNIT II

AC Circuits: Representation of sinusoidal waveforms, peak and rms values, phasor representation, real power, reactive power, apparent power, power factor, Analysis of single-phase ac circuits consisting of R, L, C, RL, RC, RLC combinations (series and parallel), resonance, Three phase balanced circuits, voltage and current relations in star and delta connections.

UNIT III

D. C. Generators & Motors: Principle of operation of Generators & Motors, Speed Control of shunt motors, Flux control, Rheostatic control, voltage control, Speed control of series motors, A. C. Generators & Motors: Principle of operation, Revolving Magnetic field, Squirrel cage and phase wound rotor, Starting of Induction motors, Direct on line and Star Delta starters, Synchronous machines.

UNIT IV

Transformers: Construction and principle of operation, equivalent circuit, losses in transformers, regulation and efficiency, Auto-transformer and three-phase transformer connections, Measuring Instruments: Electromagnetism, Different Torques in Indicating instruments, Moving Iron Instruments: Construction & Principle, Attraction and Repulsion type, Moving Coil instruments: Permanent Magnet type, Dynamometer type Instruments