**B. E. ELECTRICAL &ELECTRONICS ENGINEERING **

Outcome Based Education (OBE) and Choice Based Credit System (CBCS) **2018 scheme**

**SEMESTER – III**

**TRANSFORM CALCULUS, FOURIER SERIES AND NUMERICAL**

Module-1

Laplace Transforms: Definition and Laplace transform of elementary functions. Laplace transforms of Periodic functions and unit-step function – problems. Inverse Laplace Transforms: Inverse Laplace transform – problems, Convolution theorem to find the inverse Laplace transform (without proof) and problems, solution of linear differential equations using Laplace transform.

Module-2

Fourier Series: Periodic functions, Dirichlet’s condition. Fourier series of periodic functions period 2 and arbitrary period. Half range Fourier series. Practical harmonic analysis, examples from engineering field.

Module-3

Fourier Transforms: Infinite Fourier transforms, Fourier sine and cosine transforms. Inverse Fourier

transforms. Simple problems. Difference Equations and Z-Transforms: Difference equations, basic definition, z-transform-definition,Standard z-transforms, Damping and shifting rules, initial value and final value theorems (without proof) and problems, Inverse z-transform. Simple problems.

Module-4

Numerical Solutions of Ordinary Differential Equations (ODE’s): Numerical solution of ODE’s of first order and first degree- Taylor’s series method, Modified Euler’s method. Range – Kutta method of fourth order, Milne’s and Adam-Bashforth predictor and corrector method (No derivations of formulae), Problems.

Module-5

Numerical Solution of Second Order ODE’s: Runge -Kutta method and Milne’s predictor and corrector

method.(No derivations of formulae). Calculus of Variations: Variation of function and functional, variational problems, Euler’s equation, Geodesics, hanging chain, problems.

## ELECTRIC CIRCUIT ANALYSIS

## Course Code 18EE32

Module-1

Basic Concepts: Active and passive elements, Concept of ideal and practical sources. Source transformation and Source shifting, Concept of Super-Mesh and Super node analysis. Analysis of networks by (i) Network reduction method including star – delta transformation, (ii) Mesh and Node voltage methods for ac and DC circuits with independent and dependent sources. Duality.

Module-2

Network Theorems: Super Position theorem, Reciprocity theorem, Thevenin’s theorem, Norton’s theorem,Maximum power transfer theorem and Millman’s theorem. Analysis of networks, with and without dependent ac and DC sources.

Module-3

Resonant Circuits: Analysis of simple series RLC and parallel RLC circuits under resonances. Problems on Resonant frequency, Bandwidth and Quality factor at resonance Transient Analysis: Transient analysis of RL and RC circuits under DC excitations: Behavior of circuit elements under switching action , Evaluation of initial conditions.

Module-4

Laplace Transformation: Laplace transformation (LT), LT of Impulse, Step, Ramp, Sinusoidal signals and shifted functions. Waveform synthesis. Initial and Final value theorems.

Module-5

Unbalanced Three Phase Systems: Analysis of three phase systems, calculation of real and reactive Powers

by direct application of mesh and nodal analysis.Two Port networks: Definition, Open circuit impedance, Short circuit admittance and Transmission parameters and their evaluation for simple circuits, relationships between parameter sets.

## TRANSFORMERS AND GENERATORS

## Subject Code 18EE33

Module-1

Single phase Transformers: Operation of practical transformer under no-load and on-load with phasor

diagrams. Open circuit and Short circuit tests, calculation of equivalent circuit parameters and predetermination

of efficiency-commercial and all-day efficiency. Voltage regulation and its significance.Three-phase Transformers: Introduction, Constructional features of three-phase transformers. Choice between single unit three-phase transformer and a bank of three single-phase transformers. Transformer connection for three phase operation– star/star, delta/delta, star/delta, zigzag/star and V/V, comparative features. Phase conversion-Scott connection for three-phase to two-phase conversion. Labeling of three-phase transformer terminals, vector groups.

Module-2

Tests, Parallel Operation of Transformer& Auto Transformer: Polarity test, Sumpner’s test, separation of hysteresis and eddy current losses Parallel Operation of Transformers: Necessity of Parallel operation, conditions for parallel operation– Single phase and three phase. Load sharing in case of similar and dissimilar transformers. Auto transformers and Tap changing transformers: Introduction to autotransformer-copper economy, equivalent circuit, no load and on load tap changing transformers.

Module-3

Three-Winding Transformers & Cooling of Transformers: Three-winding transformers. Cooling of transformers.

Direct current Generator: Armature reaction, Commutation and associated problems, Synchronous Generators: Armature windings, winding factors, e.m.f equation. Harmonics–causes, reduction and elimination. Armature reaction, Synchronous reactance, Equivalent circuit.

Module-4

Synchronous Generators Analysis: Alternator on load. Excitation control for constant terminal voltage. Voltage regulation. Open circuit and short circuit characteristics, Assessment of reactance-short circuit ratio, synchronous reactance, Voltage regulation by EMF, MMF and ZPF

Module-5

Synchronous Generators (Salient Pole): Effects of saliency, two-reaction theory, Parallel operation of

generators and load sharing. Methods of Synchronization, Synchronizing power, Determination of Xd & Xq –

slip test Performance of Synchronous Generators: Power angle characteristic (salient and non salient pole), power

angle diagram, reluctance power, Capability curve for large turbo generators. Hunting and damper windings.

## ANALOG ELECTRONIC CIRCUITS

## Subject Code 18EE34

Module-1

Diode Circuits: Diode clipping and clamping circuits.

Transistor Biasing and Stabilization: Operating point, analysis and design of fixed bias circuit, self- bias

circuit, Emitter stabilized bias circuit, voltage divider bias circuit, stability factor of different biasing

circuits. Problems. Transistor switching circuits.

Module-2

Transistor at Low Frequencies: BJT transistor modelling, CE fixed bias configuration, voltage divider

bias, emitter follower, CB configuration, collector feedback configuration, analysis using h – parameter model,

relation between h – parameters model of CE, CC and CB modes, Millers theorem and its dual.

Module-3

Multistage Amplifiers: Cascade and cascade connections, Darlington circuits, analysis and design.

Feedback Amplifiers: Feedback concept, different types, practical feedback circuits, analysis and design of

feedback circuits.

Module-4

Power Amplifiers: Amplifier types, analysis and design of different power amplifiers, Oscillators:

Principle of operation, analysis and derivation of frequency of oscillation of phase shift oscillator, Wien

bridge oscillator, RF and crystal oscillator and frequency stability.

Module-5

FETs: Construction, working and characteristics of JFET and MOSFET. Biasing of JFET and MOSFET.

Analysis and design of JFET (only common source configuration with fixed bias) and MOSFET amplifiers

## DIGITAL SYSTEM DESIGN

## Subject Code 18EE35

Module-1

Principles of Combinational Logic: Definition of combinational logic, canonical forms, Generation of switching equations from truth tables, Karnaugh maps-3,4,5 variables, Incompletely specified functions (Don‘t care terms) Simplifying Max term equations, Quine-McCluskey minimization technique, Quine-McCluskey using don‘t care terms, Reduced prime implicants Tables.

Module-2

Analysis and Design of Combinational logic: General approach to combinational logic design, Decoders, BCD decoders, Encoders, digital multiplexers, Using multiplexers as Boolean function generators, Adders and subtractors, Cascading full adders, Look ahead carry, Binary comparators.

Module-3

Flip-Flops: Basic Bistable elements, Latches, Timing considerations, The master-slave flip-flops (pulsetriggered flip-flops): SR flip-flops, JK flip-flops, Edge triggered flip- flops, Characteristic equations.

Module – 4

Flip-Flops Applications: Registers, binary ripple counters, synchronous binary counters, Counters based on shift registers, Design of a synchronous counter, Design of a synchronous mod-n counter using clocked T, JK, D and SR flip-flops.

Module – 5

Sequential Circuit Design: Mealy and Moore models, State machine notation, Synchronous Sequential circuit analysis, Construction of state diagrams, counter design. Memories: Read only and Read/Write Memories, Programmable ROM, EPROM, Flash memory.

## ELECTRICAL AND ELECTRONIC MEASUREMENTS (Core Course)

## Subject Code 18EE36

Module-1

Measurement of Resistance: Wheatstone’s bridge, sensitivity, limitations. Kelvin’s double bridge. Earth resistance measurement by fall of potential method and by using Megger. Measurement of Inductance and Capacitance: Sources and detectors, Maxwell’s inductance and capacitance bridge, Hay’s bridge, Anderson’s bridge, Desauty’s bridge, Schering bridge. Shielding of bridges. Problems.

Module-2

Measurement of Power, Energy, Power Factor and Frequency: Torque expression, Errors and minimization, UPF and LPF wattmeters. Measurement of real and reactive power in 3 phase circuits. Errors, adjustments and calibration of single and three phase energy meters, Problems. Construction and operation of single-phase and three phase dynamometer type power factor meter. Weston frequency meter and phase sequence indicator.

Module-3

Extension of Instrument Ranges: Desirable features of ammeters and voltmeters. Shunts and multipliers. Construction and theory of instrument transformers, Desirable characterises, Errors of CT and PT. Turns compensation, Illustrative examples, Silsbee’s method of testing CT. Magnetic measurements: Introduction, measurement of flux/ flux density, magnetising force and leakage factor.

Module-4

Electronic and Digital Instruments: Introduction. Essentials of electronic instruments, Advantages

of electronic instruments. True rms reading voltmeter. Electronic multimeters. Digital voltmeters (DVM) – Ramp

type DVM, Integrating type DVM and Successive – approximation DVM. Q meter. Principle of working of

electronic energy meter (with block diagram), extra features offered by present day meters and their significance in billing.

Module-5

Display Devices: Introduction, character formats, segment displays, Dot matrix displays, Bar graph displays. Cathode ray tubes, Light emitting diodes, Liquid crystal displays, Nixes, Incandescent, Fluorescent, Liquid vapour and Visual displays. Recording Devices: Introduction, Strip chart recorders, Galvanometer recorders, Null balance recorders, Potentiometer type recorders, Bridge type recorders, LVDT type recorders, Circular chart and recorders. Digital tape recording, Ultraviolet recorders. Electro Cardio Graph (ECG)

## ELECTRICAL MACHINES LABORATORY – 1

## Subject Code 18EEL37

EXPERIMENTS

1 Open Circuit and Short circuit tests on single phase step up or step down transformer and predetermination of (i) Efficiency and regulation (ii) Calculation of parameters of equivalent circuit.

2 Sumpner’s test on similar transformers and determination of combined and individual transformer efficiency.

3 Parallel operation of two dissimilar single-phase transformers of different kVA and determination of load

4 sPhoaring and analytical verification given the Short circuit test data. larity test and connection of 3 single-phase transformers in star – delta and determination of efficiency and regulation under balanced resistive load.

5 Comparison of performance of 3 single-phase transformers in delta – delta and V – V (open delta) connection under load.

6 Scott connection with balanced and unbalanced loads.

7 Separation of hysteresis and eddy current losses in single phase transformer.

8 Voltage regulation of an alternator by EMF and MMF methods.

9 Voltage regulation of an alternator by ZPF method.

10 Power angle curve of synchronous generator or Direct load test on three phase synchrous generator to determine efficiency and regulation

11 Slip test – Measurement of direct and quadrature axis reactance and predetermination of regulation of salient pole synchronous machines.

12 Performance of synchronous generator connected to infinite bus, under constant power and variable excitation & vice – versa.

## ELECTRONICS LABORATORY

## Subject Code 18EEL38

1 Design and Testing of Full wave – centre tapped transformer type and Bridge type rectifier

circuits with and without Capacitor filter. Determination of ripple factor, regulation and efficiency.

2 Static Transistor characteristics for CE, CB and CC modes and determination of h parameters.

3 Frequency response of single stage BJT and FET RC coupled amplifier and determination of half

power points, bandwidth, input and output impedances.

4 Design and testing of BJT -RC phase shift oscillator for given frequency of oscillation.

5 Determination of gain, input and output impedance of BJT Darlington emitter follower with and

without bootstrapping.

6 Simplification, realization of Boolean expressions using logic gates/Universal gates.

7 Realization of Half/Full adder and Half/Full Subtractors using logic gates.

8 Realization of parallel adder/Subtractors using 7483 chip- BCD to Excess-3 code conversion and

Vice – Versa.

9 Realization of Binary to Gray code conversion and vice versa.

10 Design and testing Ring counter/Johnson counter.

11 Design and testing of Sequence generator.

12 Realization of 3 bit counters as a sequential circuit and MOD – N counter design using 7476, 7490,74192.