EE-241 ELECTROMECHANICS-I L T P 3 1 3 Transformers:

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EE
-
241

ELECTROMECHANICS
-
I




L
T P


3 1 3


1.
Transformers:
Construction, Theory and operation, E.M.F.
equation, phasor diagram,

equivalent circuit, open and short circuit tests, back to back test, voltage regulation and

efficiency, autotransformers, three winding transformer, parallel operation of single phase
and
three

phase transformers, three phase tran
sformer connections, phasor groups, three phase to

two phase and six phase conversion, Harmonics and excitation phenomenon, inrush current

phenomenon.


2.
Basic concepts of Rotating Electrical Machines:
Constructional details of various rotating

machines,
Introduction to Lap and wave windings, EMF generation, Effect of chording and

distribution of winding on EMF, Harmonics in generated emf, MMF of distributed winding,


3.
Energy Conversion:
Principle of electromechanical energy conversion, energy stored in
a

magnetic field system, singly and doubly excited systems.


4.
DC Machines:
Action of commutator, E.M.F. generated in armature, Torque in DC
machines,

Methods of excitation, armature reaction, MMF and flux density wave from the DC
Machines,

Commutation pr
ocess, interpoles and compensating windings. Basic performance
equations of

DC machine. Magnetization and operating characteristics of DC generators and
DC motors,

starters, Speed control, Ward Leonard system, losses and efficiency.


5.
Crossfield Machines
:
Principle of operation of Rosenberg generators, amplidyne and

metadyne.


BOOKS:


1. Electrical Machinery by P.S. Bhimbra.

2. Electric Machinery by Fitzerald, Kingsley and Umans.

3. Theory of AC Machinery by A.S.Langsdorf.

4. Electrical Machines, Ashfaq H
ussian, Dhanpat Rai& Co.

5. Electrical Machinery by Chapman.


EE
-
242



POWER SYSTEM

L T P


3 1 0


1.
Introduction to MATLAB and its application


2.
Me
chanical Design of Line:
Catenary method, loading on conductors, conductor, clearance

from ground, erection sag and tension, sag
-
template.


3.
Insulators:
Types of insulator, voltage distribution and string efficiency method to improve

voltage distribution
.


4.
Parameters of Transmission Line:
Inductance of two
-
write line, three
-
phase line
inductance

and bundle conductor line, line capacitance of two


wire line, three phase line.
Effect of earth on the

line capacitance of bundled conductors lines.


5.
Tran
smission Line Performance:
Classification of the line, ABCD constant of line, short

time, T & II model of medium length line, rigorous analysis of long transmission line, Ferranti

effect, surge impedance loading, power flow through a line, power circle dia
gram, control of
voltage

and reactive power.


6.
Traveling Waves:
Wave equations, surge impedance, energy and power of a surge, velocity
of

traveling of waves, reflection and refraction of waves, Bweley lattice diagram.

7.
Corona:
The phenomenon of corona c
ritical disruptive voltage, corona power loss, radio

interference minimization of corona.


8.
Underground Cables:
Cable construction, dielectric stress insulation resistance, grading of

cables, cable capacitance, and types of cable.


9.
Power Generation an
d Distribution System:
Different types of generating systems, radial

and ring main distribution systems.


BOOKS:

1. Electrical Power System by Ashfaq Hussain, CBS Publisher Distributors, New Delhi

2. Power System Analysis by Hadi Sadat Tata McGraw
-
Hill Pub
lishing Co. Ltd.

3. Elements of power System Analysis by WB Stevenso, Mc Graw Hill

4. Modern Power System Analysis by Nagrath & Kothari Tata McGraw Hill


EE
-
243

ELECTROMAGNETIC FIELD THEORY

L T P


3 1 0


1. INTRODUCTION
: Review of vec
tor analysis: Scalar & vector, products: gradient,
divergent and

curl of a vector and their physical explanation
-
Transformation amongst
rectangular, cylinderical and

spherical co
-
ordinate system.


2. ELECTROSTATICS
: Coulomb's law, electric field intensity
from point charges, field due
to

continuous distribution of charges, gauss’s law, Electric displacement and displacement
density

potential function, potential field of a point charge, laplace’s and poison’s equations.


3. MAGNETOS
-
TATICS
: Magnetic field in
tensity and magneto motive force, Ampere’s
Circuital

law, Energy stored, biot
-
savart law, vector potential, magnetic dipole.


4. TIME DEPENDENT FIELDS
: Ampere's work law in differential vector form, continuity
of

currents, conduction and displacement curre
nt. Maxwell's equations and their
interpretations, boundary

conditions. Wave equations, sinusoidal time varying fields, uniform
plane wave in dielectric and

conductor media, skin effect and depth of penetration, reflection
and refraction of plane waves at

boundaries for normal and oblique incidence surface
impedance.


5. ENERGY FLOW AND POYNTING VECTOR
: Pointing theorem, interpretation of ExH.
Simple

application, complex pointing vector.


6. GUIDED WAVES
: (a) Transmission line theory from the circuit concep
t, properties;
constants;transmission line equations; infinite line; reflections in transmission lines; voltage,
current andimpedance relations
-
open and short circuit lines; Experimental determination of
line constants.

Standing wave ratio; impedance match
ing, quarter and half wave lines single
stub and double stub

matching; circle diagram
-

Smith chart.

(b) Waves between parallel plane;
Transverse Electric wave, Transverse magnetic waves;

characteristics of TE & TM waves;
Transverse Ele
ctromagnetic waves;
velocity of
propagation;

Attenuation in parallel plane
guides; wave impedance.


BOOKS:

1. Electromagnetic waves & radio system by Jorden R.F.

2. Principle and applications of Electromagnetic fields by Ptonsey R and Collin R.P.

3. Applied Electromagnetic by

Planus M.A.


EE
-
244


POWER ELECTRONICS


L T P


3 1 2


1.
Characteristics of Various Solid State Devices:
Power diode, Power transistor, MOSFET,

Thyristor & its two transistor model, Triac, Gate turn off thyristor (GTO), insul
ated gate
bipolar

transistor (IGBT), comparison of switching power devices, turn on & turn off
characteristics, driver

circuits.


2.
AC to DC Converters:
Natural commutation, single phase and three phase bridge rectifiers,
semicontrolled

& fully controlled

rectifiers, dual converters, effect of load and source
inductance,

inverter operation.


3.
DC to DC Converters:
Thyristor choppers, voltage, current and load commutation, step up

Choppers, basic principles of switch mode power supplies, buck, boost and bu
ck
-
boost
converters.


4.
DC to AC Inverters:
Voltage source inverters, single phase inverter, three phase inverter,

harmonic reduction techniques and PWM techniques, current source inverter.


5.
AC to AC Converters:
Single phase & 3
-
phase AC voltage contro
llers using thyristors &
trial

integral cycle control, AC choppers, single phase cycle converters, applications, effects of

harmonics & electromagnetic interference.


BOOKS:

1. Recent Advances in Semiconductor Devices by B.K.Bose.

2. An Introduction to Thy
ristor and their applications by M.Ramamurthy.

3. Power Electronics
-

P.S.Bhimbra.

4. Thyristorised Power Controllers
-

Dubey, Doradla, Joshi and Sinha

5. Power Electronics, M.H. Rashid

6. Power Electronics (Converter, Applications & Design), Ned Mohan, T.
M Undeland & W.
P.

Robbin


EE
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245

TRANSDUCERS & SIGNAL CONDITIONING

L T P


3 1 2


1.
Transducers:
Introduction, classification, Mechanical devices as primary detectors,
Basic
requirements

of a transducer, Electrical transducers, Type
of transducers for measuring

displacement, strain, vibration, pressure, Flow, temperature, force, torque, liquid level,

Humidity, P. H. value, velocity (angular & linear), acceleration, Basic principles of resistive

transducers, Inductive transducers, capa
citive transducers, Thermoelectric transducers,

Piezoelectric transducers, Hall effect transducers, Electromechanical transducers, Photoelectric

transducers, Digital transducers


2.
Signal Processing Circuits:
Introduction, ideal op
-
amp, Operational amplif
ier
specifications,

Zero crossing detector, Zero crossing detector with Hysteresis, inverting and
non
-
inverting

amplifiers, Voltage
-
follower, Adder, subtractor, Multiplier, divider, integrator,
Differentiator,

voltage to current converter, current to volta
ge converter, Phase shifter circuit,
Absolute
-
Value

circuit, Peak detector, AC to DC converter, logarithmic converter,
Differential
-
amplifier,

Instrumentation amplifier, Ana
log Modulators & demodulators.


3.
Data Display and Recording Systems:
Introduction

to Analog and digital display methods,

Analog Recorders, C.R.O., Magnetic tape recorders, digital input
-
output Devices, Digital

frequency meter, Digital Voltmeter.


4.
Data Transmission and Telemetry:
Introduction, Characteristics of Frequency division

mu
ltiplexing, Time
-
division multiplexing, Transmission channels and media.


5.
Data Acquisition and Conversion:
Introduction, signal conditioning of the inputs, single

channel D A S, Multi
-
channel D A S, Data Conversion, Multi
-
plexer and S/H circuit, A/D

con
verter.


BOOKS:

1.

Transducers and Instrumentation of by D.V.S. Murty (PHI)India.

2.

Instrumentation Devices & Systems by C.S. Rangan, G.R. Sarma, V.S.V. Mani

(TMH)
NewDelhi.

3.

A course in Electrical & Electronic Measurements & Instrumentation by

A.K.Sawhney.

4.

Operational Amplifiers and Linear Integrated Circuits by Robert F. Coughlin & Frederick
F.

Driscoll, (PHI) India.

5.

Measurement Systems (application & Design) by Ernest O. Doebelin.

EE
-
246


NETWORK ANALYSIS AND SYNTHESIS


L

T P




3 1 0


Network Topology
: Definition, Graph, Tree, Basic cut
-

set & tie
-
set matrices for planer
networks
-
loop and nodal method of analysis of networks with independe
nt and dependent
Voltage & current source, Duality & dual networks.


Network Functions:

Introduction, driving point and transfer functions, poles and zeros and
their significance, network functions for one port and two port networks, time domain behavior
f
rom the pole
-
zero plot.


Elements of Network Synthesis:

Network realizability, Hurwitz Polynominals, Positive real functions, Properties of RC, RL &
LC networks, Foster and Cauer forms of realization, Transmission zeroes, Synthesis of transfer
functions.

O
perational Amplifiers:

Basic OP
-
AMP, Differential amplifier, Emitter coupled Differential Amplifier, transfer
characteristics of differential OP
-
AMP, IC operational Amplifier, Offset error voltage and
currents, Temperature drift of input offset voltage and

current.


Filters Synthesis :

Classification of filters, characteristics impedance and propagation constant of pure reactive
network, Ladder network, T section, π section, terminating half section. Low pass, High pass,
Band pass & Band reject filter desig
n concepts. Design of constant
-
K, m derived filters.
Composite filters, Butterworth and Chebyshev approximations, Normalized specifications,
Frequency transformations, Frequency and impedance denormalisation, Types of frequency
selective filters, Linear ph
ase filters, active filter concept.


Text Books:

1. Someshwar C. Gupta, Jon W. Bayless, Behrouz Peikari ", Circuit analysis


with computer
applications to problem solving", Wiley
-

Eastern Ltd., 1991.


2. Louis Weinberg, “Network Analysis and Synthesis ",
McGraw Hill Book Company Inc.,
1962.


3. Vasudev K. Aartre," Network Theory and Filter Design ", Wiley
-

Eastern Ltd., Second
Edition, 1993.

References:

1. Franklin F. Kuo, " Network Analysis and Synthesis ", John Wiley.

2. Van valkenburg, " Network Analys
is ", Prentice Hall of India Pvt. Ltd., New Delhi, 1994.

3. Lawrence P. Huelsman, " Active and Passive Analog Filter Design ", McGraw Hill, 1993.