Basic Electrical Engineering
4b. Three Phase Synchronous Generators: Principle of operation, Types and constructional
features, Advantages of rotating field type alternator, Synchronous speed, Frequency of
generated voltage,Emf equation. Concept of winding factor (excluding the derivation of
distribution and pitch factors). Illustrative examples on emf equation.
Module – 5
5a. Single Phase Transformers: Necessity of transformer, Principle of operation and
construction of single-phase transformers (core and shell types). Emf equation, losses, variation
losses with respect to load, efficiency, Condition for maximum efficiency, Voltage regulation
and its significance (Open Circuit and Short circuit tests, equivalent circuit and phasor diagrams
are excluded). Illustrative problems on emf equation and efficiency only.
5b. Three Phase Induction Motors: Principle of operation, Concept and production of rotating
magnetic field, Synchronous speed, rotor speed, Slip, Frequency of the rotor induced emf, Types
and Constructional features. Slip and its significance. Applications of squirrel - cage and slip –
ring motors. Necessity of a starter, starting of motor using stars-delta starter. Illustrative
examples on slip calculations.
“Basic Electrical Engineering”, D C Kulshreshtha, TMH, 2009 Edition.
“Fundamentals of Electrical Engineering”, Rajendra Prasad, PHI, Second Edition, 2009.
1. "Electrical Technology", E. Hughes International Students 9th Edition, Pearson, 2005.
2. “Basic Electrical Engineering”, Abhijit Chakrabarti, Sudiptanath, Chandan Kumar Chanda,
TMH, First reprint 2009.
3. Problems in Electrical Engineering, Parker Smith, CBS Publishers and Distributors, 9th
Department of EEE, SJBIT