Branch: Common Semester
Electrical Circuit Analysis Voltage & current sources, dependent & independent sources, source conversion, analysis of D.C. circuits, KLC & KVL, Mesh & loop analysis, concept of dummy node & dummy mesh, Thevenin’s & Superposition theorem, star-delta circuits.
AC Circuits Review of 1-phase AC circuits under sinusoidal steady state, active, reactive and apparent power, power factor. 3-Phase AC circuits, star and delta connections. 3-phase source and load, analysis of balanced and unbalanced systems, power in 3-phase circuits and their measurements.
Magnetic Circuits, Review of laws of electromagnetism. Flux, mmf and their relation. analysis of magnetic and electric circuits. Saturation, B-H curves, fringing and leakage. AC excitation in magnetic circuits induced voltage, hysteresis effect and eddy currents.
Transformers, Single-phase transformer, Basic concepts and construction features. Types of transformers. Voltage, current and impedance transformation. Equivalent circuits. Per unit system, voltage regulation, losses and efficiency. Testing of transformers. Auto transformers.
Rotating Electric Machines Basic concepts, working principle & general construction of DC machines (motor and generator) 3-phase and 1- phase induction motors and synchronous machines ( motor and generator).