Unit-I
DC Circuits: Electrical circuit elements (R, L and C), voltage and current sources, Kirchoff current and
voltage laws, analysis of simple circuits with dc excitation. Superposition, Thevenin and Norton
Theorems.
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, and RL, RC, RLC combinations (series only). Three phase balanced circuits, voltage and
current relations in star and delta connections.
Unit-III
Transformers and 3-ph Induction Motors: Transformers: Electromagnetic induction, Faradays laws,
statically induced emf, Lenz law, BH characteristics, ideal and practical transformer, losses and
efficiency, Auto-transformer and three-phase transformer connections.
Three Phase Induction motor: Generation of rotating magnetic fields, Construction and working of a
three-phase induction motor, squirrel cage IM, slip-ring IM, Applications.
Unit-IV
Single-phase induction motor & DC Machines: Single-phase induction motor: Construction and
principle of operation, Capacitor start & capacitor run motor, applications
DC Generators: Dynamically induced emf, Flemming’s Right hand and Left hand rules, Construction
and principle of operation of DC generator, EMF equation, Types of DC Generators, OCC
characteristics, applications
DC Motors: principle of operation of DC Motor, Types of DC motors, applications.
Unit-V
Electrical Installations: Components of LT Switchgear: Switch Fuse Unit (SFU), MCB, ELCB,
MCCB, Types of Wires and Cables, Earthing. Types of Batteries, Important Characteristics for
Batteries. Elementary calculations for energy consumption, power factor improvement and battery
backup.
Suggested Reading:
1. N.K. De, “Basic Electrical Engineering”, Universities Press, 2015.
2. J.B. Gupta, “Fundamentals of Electrical Engineering and Electronics” S.K. Kataria & Sons
Publications, 2002.
3. J.B. Gupta, “Utilization of Electric Power and Electric Traction” S.K. Kataria & Sons
Publications, 2010
4. Abhijit Chakrabarti, Sudipta Nath, Chandan Kumar Chanda, “Basic Elactrical Engineering”
Tata McGraw Hill, Publications,2009
5. Hughes, “Electrical Technology”, VII Edition, International Student -on, Addison Welsey
Longman Inc., 1995.