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## Electrical 3rd Semester Syllabus Overview

Sr. No. | Book list 2022 |

1 | APPLIED MATHEMATICS – III |

2 | ELECTRICAL INSTRUMENTATION AND MEASUREMENT |

3 | ELECTRICAL AND ELECTRONICS ENGINEERING MATERIALS |

4 | DIGITAL ELECTRONICS |

5 | ELECTRICAL MACHINES – I |

6 | ENVIRONMENTAL STUDIES |

## electrical engineering 3rd semester subjects

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## APPLIED MATHEMATICS –III

### 1. Matrices (16 Periods)

- 1.1 Algebra of Matrices, Inverse Addition, Multiplication of matrices, Null matrix and a unit matrix, Square matrix, Symmetric, Skew symmetric, Hermitian, Skew hermition, Orthagonal, Unitary, diagonal and Triangular matrix, Determinant of a matrix. Definition and Computation of inverse of a matrix.
- 1.2 Elementry Row/Column Transformation Meaning and use in computing inverse and rank of a matrix.
- 1.3 Linear Dependence, Rank of a Matrix Linear dependence/independence of vectors, Definition and computation of rank of matrix. Computing rank through determinants, Elementary row transformation and through the concept of a set of independent vectors, Consistency of equations.
- 1.4 Eigen Pairs, Cayley-Hamilton Theorem :Definition and evaluation of eign values and eign vectors of a matrix of order two and three, Cayley-Hamilton theorem (without Proof)and its verification, Use in finding inverse and powers of a matrix.

### 2. Differential Calculus (15 Periods)

- 2.1 Function of two variables, identification of surfaces in space, conicoids
- 2.2 Partial Differentiation Directional derivative, Gradient, Use of gradient f, Partial derivatives, Chain rule, Higher order derivatives, Euler’s theorem for homogeneous functions, Jacobians.
- 2.3 Vector Calculus Vector function, Introduction todouble and triple integral,differentiation and integration of vector functions, gradient, divergence and curl, differential derivatives.

### 3. Differential Equation (15 Periods)

- 3.1 Formation, Order, Degree, Types, Solution Formation of differential equations through physical, geometrical, mechanical and electrical considerations, Order, Degree of a differential equation, Linear, nonlinear equation.
- 3.2 First Order Equations Variable seperable, equations reducible to seperable forms, Homogeneous equtions, equations reducible to homogeneous forms, Linear and Bernoulli form exact equation and their solutions.
- 3.3 Higher Order Linear Equation : Property of solution, Linear differential equation with constant coefficients
- (PI for X= e
^{ax}, Sinax, Cosax, X^{n},e^{ax}V, XV - 3.4 Simple Applications LCR circuit, Motion under gravity, Newton’s law of cooling, radioactive decay, Population growth, Force vibration of a mass point attached to spring with and without damping effect. Equivalence of electrical and mechanical system

### 4. Integral Calculus-II (12 Periods)

- 4.1 Beta and Gamma Functions Definition, Use, Relation between the two, their use in evaluating integrals.
- 4.2 Fourier Series Fourier series of f(x),-n<x<n, Odd and even function,Half range series.
- 4.3 Laplace Transform Definition, Basic theorem and properties, Unit step and Periodic functions, inverse laplace transform, Solution of ordinary differential equations

### 5. Probability and Statistics (12 Periods)

### 5.1 Probability

- Introduction, Addition and Multiplication theorem and simple problem.

### 5.2 Distribution

- Discrete and continuous distribution, Bionimal Distribution, Poisson distribution, Normal Distribution.

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## ELECTRICAL INSTRUMENTATION AND MEASUREMENT

### 1. Introduction to Electrical Measuring Instruments: (05 Periods)

- 1.1 Concept of measurement and instruments
- 1.2 Concept of measurement of electrical quantities and instruments for their measurements, sources of error.
- 1.3 Types of electrical measuring instruments – indicating, integrating and recording type instruments
- 1.4 Essentials of indicating instruments – deflecting, controlling and damping torque

### 2. Ammeters and Voltmeters (Moving coil and moving iron type) (06 Periods)

- 2.1 Concept of ammeter and voltmeters and difference between them
- 2.2 Construction and working principles of moving Iron and moving coil instruments
- 2.3 Merits and demerits, sources of error and application of these instruments

### 3. Wattmeters (Dynamometer Type) (06 Periods)

- Construction, working principle, merits and demerits of dynamometer type wattmeter, Digital wattmeters.

### 4. Energymeter (10 Periods)

- 4.1 Induction Type: Construction, working principle, merits and demerits of single-phase and three-phase energy meters
- 4.2 Errors and their compensation
- 4.3 Simple numerical problems
- 4.4 Construction and working principle of maximum demand indicators
- 4.5 Digital energy meter (diagram, construction and application)

### 5. Miscellaneous Measuring Instruments: (18 Periods)

- 5.1 Construction, working principle and application of Meggar, Earth tester(analog
- and digital) Multimeter, Frequency meter (dynamometer type) single phase
- power factor meter (Electrodynamometer type). Working principle of
- synchroscope and phase sequence indicator, tong tester (Clamp-on meter)
- 5.2 Instrument Transformers: Construction, working and applications
- a) CT
- b) PT

### 6. Electronic Instruments: (06 Periods)

- 6.1 Cathode Ray Oscilloscope: Block diagram, working principle of CRO and its various controls. Applications of CRO.
- 6.2 Digital multi-meter (only block diagram) and Applications

### 7. LCR meters. (04 Periods)

- Study of LCR meters and their applications

### 8. Power Measurements in 3-phase circuits by (04 Periods)

- 8.1 Two wattmeter method in balanced and unbalanced circuits and simple problems
- 8.2 Three wattmeter method

### 9. Transducers (10 Periods)

- Introduction, Types of Transducers (1 phase,3 phase) Basic concept of pressure measurement, flow measurement, level measurement, displacement measurement using transducers

### 10. Measurement of Temperature (09 Periods)

- Different types of thermometers, thermocouple, resistance temperature detector and their construction, principle and working. Thermal Imager Camera (Concept)

### 11. Smart Metering System (06 Periods)

AMI (Advance Metering Infrastructure), Functions of AMI, cyber Security, Advantages Smart Meter Technology: AMR (Automatic Metering Reading), inverse/reverse metering system in solar power plant, MRI (Meter Reading Instrument)

Download it -: polytechnic electrical engineering 3rd semester syllabus Pdf

## ELECTRICAL AND ELECTRONICS ENGINEERING MATERIALS

### 1. Classification (10 Periods)

- Classification of materials into conducting, semi conducting and insulating materials through a brief reference to their atomic structure and energy bands

### 2. Conducting Materials (12 Periods)

- 2.1 Introduction
- 2.2 Resistance and factors affecting it such as alloying and temperature etc
- 2.3 Classification of conducting material as low resistivity and high resistivity materials, low resistance materials
- 2.3.1 Copper: General properties as conductor: Resistivity, temperature coefficient, density, mechanical properties of hard-drawn and annealed copper, corrosion, contact resistance. Application in the field of electrical engineering.
- 2.3.2 Aluminium: General properties as conductor: resistivity, temperature coefficient, density, mechanical properties of hard and annealed aluminium, solderability, contact resistance. Applications in the field of electrical

- engineering.
- 2.3.3 Steel: Mechanical properties of steel, applications in the field of electrical engineering.
- 2.3.4 Introduction to bundle conductors and its applications.
- 2.3.5 Low resistivity copper alloys: Brass, Bronze (cadmium and Beryllium), their practical applications with reasons for the same

- 2.4 Applications of special metals e.g. Silver, Gold, Platinum etc.
- 2.5 High resistivity materials and their applications e.g., manganin, constantan, Nichrome, mercury, platinum, carbon and tungsten
- 2.6 Superconductors and their applications

### 3. Review of Semi-conducting Materials (12 Periods)

- Semi-conductors and their properties, Materials used for electronic components like resistors, capacitors, diodes, transistors and inductors etc.

### 4. Insulating materials; General Properties: (10 Periods)

- 4.1 Electrical Properties: Volume resistivity, surface resistance, dielectric loss, dielectric strength (breakdown voltage) dielectric constant
- 4.2 Physical Properties: Hygroscopicity, tensile and compressive strength, abrasive resistance,
- brittleness
- 4.3 Thermal Properties: Heat resistance, classification according to permissible temperature rise. Effect
- of overloading on the life of an electrical appliance, increase in rating with the use of insulating materials having higher thermal stability, Thermal conductivity, Electro-thermal breakdown in solid dielectrics
- 4.4 Chemical Properties: Solubility, chemical resistance, weatherability
- 4.5 Mechanical properties, mechanical structure, tensile structure

### 5. Insulating Materials and their applications: (10 Periods)

- 5.1 Plastics
- 5.1.1 Definition and classification
- 5.1.2 Thermosetting materials: Phenol-formaldehyde resins (i.e. Bakelite) amino resins (urea formaldehyde and Melamine-formaldehyde), epoxy resins – their important properties and applications

- 5.1.3 Thermo-plastic materials: Polyvinyl chloride (PVC), polyethylene, silicones, their important properties and applications
- 5.2 Natural insulating materials, properties and their applications
- – Mica and Mica products
- – Asbestos and asbestos products
- – Ceramic materials (porcelain and steatite)
- – Glass and glass products
- – Cotton
- – Silk
- – Jute
- – Paper (dry and impregnated)
- – Rubber, Bitumen
- – Mineral and insulating oil for transformers switchgear capacitors, high voltage insulated cables, insulating varnishes for coating and impregnation
- – Enamels for winding wires
- – Glass fibre sleeves
- 5.3 Gaseous materials; Air, Hydrogen, Nitrogen, SF- their properties and applications

### 6. Magnetic Materials: (10 Periods)

- 6.1 Introduction – ferromagnetic materials, permeability, B-H curve, magnetic saturation, hysteresis loop including coercive force and residual magnetism, concept of eddy current and hysteresis loss, Curie temperature, magnetostriction effect.
- 6.2 Soft Magnetic Materials:
- 6.2.1 Alloyed steels with silicon: High silicon, alloy steel for transformers, low silicon alloy steel for electric rotating machines

- 6.2.2 Cold rolled grain oriented steels for transformer, Non-oriented steels for rotating machine
- 6.2.3 Nickel-iron alloys
- 6.2.4 Soft Ferrites

- 6.3 Hard magnetic materials Tungsten steel, chrome steel, hard ferrites and cobalt steel, their applications

### 7. Special Materials (10 Periods)

Thermocouple, bimetals, leads soldering and fuses material and their applications, thermistor, sensistor, varistors and their practical applications.

### 8. Materials for Electrical Machines (10 Periods)

Introduction to various engineering materials necessary for fabrication of electrical machines such as motors, generators, transformers etc

## DIGITAL ELECTRONICS

### 1. Number Systems (10 Periods)

- 1.1 Decimal, binary, octal and hexa-decimal number systems and their inter-conversion
- 1.2 Binary and Hexadecimal addition, subtraction and multiplication
- 1.3 1’s and 2’s complement methods of addition/subtraction

### 2. Gates (08 Periods)

- Definition, symbol and truth tables for inverter, OR, AND, NAND, NOR and X-OR exclusive-AND gates

### 3. Boolean Algebra (12 Periods)

- 3.1 Boolean Relations and their applications
- 3.2 DeMorgan’s Theorems
- 3.3 K-Map upto four variables

### 4. Combinational Circuits (12 Periods)

- 4.1 Half adder, Full adder
- 4.2 Encoder, Decoder
- 4.3 Multiplexer/Demultiplexer
- 4.4 Display Devices (LED, LCD and 7-segment display)

### 5. Flip-Flops (09 Periods)

- 5.1 J-K Flip-Flop
- 5.2 R-S Flip-Flop
- 5.3 D-Type Flip-Flop
- 5.4 T-Type Flip-Flop
- 5.5 Applications of Flip-Flops

### 6. Introduction of Shift Registers and Counters (08 Periods)

### 7. A/D and D/A Converters (06 Periods)

- 7.1 A/D converter (Counter ramp, successive approximation method of A/D Conversion)
- 7.2 D/A converters (Binary weighted, R-2R D/A Converter)

### 8. Semi-conductor Memories (05 Periods)

- 8.1 Types of semi-conductor memories: RAM, ROM, EPROM, EEPROM
- 8.2 Static and dynamic RAM
- 8.3 Merits, demerits, and applications

## ELECTRICAL MACHINES – I

### 1. Introduction to Electrical Machines (20 Periods)

- 1.1 Definition of motor and generator
- 1.2 Torque development due to alignment of two fields and the concept of torque angle
- 1.3 Electro-magnetically induced emf
- 1.4 Elementary concept of an electrical machine
- 1.5 Comparison of generator and motor
- 1.6 Generalized theory of electrical machines

### 2. DC Machines (25 Periods)

- 2.1 Main constructional features, Types of armature winding
- 2.2 Function of the commutator for motoring and generation action
- 2.3 Factors determining induced emf
- 2.4 Factors determining the electromagnetic torque
- 2.5 Various types of DC generators
- 2.6 Significance of back e.m.f., the relation between back emf and Terminal voltage
- 2.7 Armature Reaction
- 2.8 Methods to improve commutation
- 2.9 Performance and characteristics of different types of DC motors
- 2.10 Speed control of dc shunt/series motors
- 2.11 Need of starter, three point dc shunt motor starter and 4 point starter
- 2.12 Electric Braking
- 2.13 Applications of DC motors
- 2.14 Faults in dc machines and their retrospective
- 2.15 Losses in a DC machine
- 2.16 Determination of losses by Swinburne’s test
- 2.17 Rating and Specifications of DC machines

### 3. Single Phase Transformer (25 Periods)

- 3.1 Introduction
- 3.2 Constructional features of a transformer and parts of transformer
- 3.3 Working principle of a transformer
- 3.4 EMF equation
- 3.5 Transformer on no-load and its phasor diagram
- 3.6 Transformer – neglecting voltage drop in the windings – Ampere turn balance –
- its phasor diagram
- 3.7 Mutual and leakage fluxes, leakage reactance
- 3.8 Transformer on load, voltage drops and its phasor diagram
- 3.9 Equivalent circuit diagram
- 3.10 Relation between induced emf and terminal voltage, voltage regulation of a
- transformer- mathematical relation
- 3.11 Losses in a transformer
- 3.12 Open circuit and short circuit test. Calculation of efficiency, condition for
- maximum efficiency-maintenance of Transformer, scheduled Maintenance
- 3.13 Auto transformer construction, working and applications
- 3.14 Different types of transformers including dry type transformer.
- 3.15 Rating and Specifications of single phase transformer

### 4. Three Phase Transformer (14 Periods)

- 4.1 Construction of three phase transformers and accessories of transformers such
- as Conservator, breather, Buchholtz Relay, Tap Changer (off load and on load)
- (Brief idea)
- 4.2 Types of three phase transformer i.e. delta-delta, delta-star, star-delta and star-
- star
- 4.3 Star delta connections (relationship between phase and line voltage, phase and
- line current)
- 4.4 Conditions for parallel operation (only conditions are to be studied)
- 4.5 On load tap changer
- 4.6 Difference between power and distribution transformer
- 4.7 Cooling of transformer
- 4.8 Rating and Specifications of three phase transformers

## ENVIRONMENTAL STUDIES

### 1. Introduction (04 Periods)

- 1.1 Basics of ecology, eco system- concept, and sustainable development, Resources renewable and non renewable.

### 2. Air Pollution (04 Periods)

- 2.1 Source of air pollution. Effect of air pollution on human health, economy, plant, animals. Air pollution control methods.

### 3. Water Pollution (08 Periods)

- 3.1 Impurities in water, Cause of water pollution, Source of water pollution. Effect of water pollution on human health, Concept of dissolved O2, BOD, COD. Prevention of water pollution- Water treatment processes, Sewage treatment. Water quality standard.

### 4. Soil Pollution (06 Periods)

- 4.1 Sources of soil pollution
- 4.2 Types of Solid waste- House hold, Hospital, From Agriculture, Biomedical, Animal and human, excreta, sediments and E-waste
- 4.3 Effect of Solid waste
- 4.4 Disposal of Solid Waste- Solid Waste Management

### 5. Noise pollution (06 Periods)

- Source of noise pollution, Unit of noise, Effect of noise pollution, Acceptable noise level, Different method of minimize noise pollution.

### 6. Environmental Legislation (08 Periods)

- Introduction to Water (Prevention and Control of Pollution) Act 1974, Introduction to Air (Prevention and Control of Pollution) Act 1981 and Environmental Protection Act 1986, Role and Function of State Pollution Control Board and National Green Tribunal (NGT), Environmental Impact Assessment (EIA).

### 7. Impact of Energy Usage on Environment (06 Periods)

- Global Warming, Green House Effect, Depletion of Ozone Layer, Acid Rain. Eco-friendly Material, Recycling of Material, Concept of Green Buildings.