Introduction to Electrical Engineering (1BESC104B/204B)

Introduction to Electrical Engineering

Course Code 1BESC104B/204B 
Semester I/II
CIE Marks 50
Teaching Hours/Week (L:T:P: S) 3:0:0:0 
SEE Marks 50
Total Hours of Pedagogy 40 Hours Total Marks 100
Credits 03 Exam Hours 03
Examination type (SEE) Theory

Module-1

Power Generation: Conventional and nonconventional energy sources. Single-line diagram of power

supply system showing power station, transmission system and distribution system. Definition of power

grid.

DC circuits: Ohm’s law and Kirchhoff’s laws, analysis of series, parallel and series-parallel circuits.

Power and energy.Problems.

Number of Hours: 08

Module-2

Single-Phase Circuits: Generation of single-phase system. Equation of AC voltage and current, average

value, RMS value, form factor, peak factor and their relation [No derivations]. Voltage and current

relationships in R, L and C circuits, concept of power, reactive power, apparent power and power factor,

analysis of R-L, R-C and R-L-C series circuits, parallel circuits, illustrative examples.

Three-Phase Circuits: Generation of three-phase systems, star and delta (mesh) connections, relation

between phase and line values of voltages and of currents of star and delta connections. Definition of

balanced and unbalanced source and load. Power, reactive power and power factor. Problems with balanced loads.

Number of Hours: 08

Module-3

DC Generator: Principle of operation, constructional details, induced emf expression, types of

generators. Relation between induced emf and terminal voltage. Simple problems.

DC Motor: Principle of operation, back emf and its significance. Torque equation, types of motors,

characteristics and speed control of DC shunt motor. Applications of DC motors. Simple problems.

 Number of Hours:08

Module-4

Transformers: Introduction to transformers, necessity of transformer, principles of operation,

constructional features of single phase transformers. EMF equation, losses, variation of losses with

respect to load. Calculation of efficiency at different loads.

Three-phase induction Motors: Definition of rotating magnetic field (without derivation), Principle of

operation. Constructional features of squirrel cage type and wound rotor type induction motor. Slip and its significance, problems. Applications.

Number of Hours: 08

Module-5

Domestic Wiring: Two-way and three-way control of loads.

Electricity Bill: Definition of “unit” used for consumption of electrical energy, power rating of common

household appliances. Two-part electricity tariff.

Equipment Safety measures: Working principle of fuse and miniature circuit breaker (MCB), merits and

demerits.

Personal safety measures: Electric shock, safety precautions to avoid shock. Earthing and types: Plate

earthing and pipe earthing.

 Number of Hours: 08

Suggested Learning Resources

Textbooks:

1. A text book of Electrical Technology by B.L. Theraja, S Chand and Company, reprint edition 2014.

2. Principles of Electrical Engineering & Electronics by V. K. Mehta, Rohit Mehta, S. Chand

and Company Publications, 2nd edition, 2015.

Reference books

 1.Basic Electrical Engineering, D. P. Kothari and I. J. Nagrath, Tata McGraw Hill 4th edition, 2019.0

 2.Fundamentals of Electrical Engineering by Rajendra Prasad, PHI, 3rd edition, 2014.

 3.Electrical Technology by E. Hughes, Pearson, 12th Edition, 2016.

 4.Basic Electrical and Electronics Engineering, K.Vijayarekha, et al, Cengage. Reprint 2023.

 5. Handbook of Electrical Engineering formulae, Harish C Rai, CBS Publications, 2018