DIPLOMA IN ELECTRICAL ENGINEERING, SEMESTER – III

CHATTISGARH SWAMI VIVEKANAND TECHNICAL UNIVERSITY, BHILAI

DIPLOMA IN ELECTRICAL ENGINEERING, SEMESTER – III

1. Electrical 224311(24) Elements of Electrical Engineering

2. Electrical 224312(24) Electrical Drawing

3. Mech. 224313(37) Fundamentals of Mechanical Engineering

4. Electronics 224314(28) Basic Electronics

5. Electrical 224315(24) Electrical Circuit

6. Electrical 224321(24) Elements of Electrical Engineering Lab

7. Mechanical 224322(37) Fundamentals of Mechanical Engineering Lab

8. Elec. & Tele. 224323(28) Basic Electronics Lab

9. Electrical 224324(24) Electrical Circuit Lab

10. Electrical 224325(24) Electrical Workshop

1. SUBJECT - ELEMENTS OF ELECTRICAL ENGINEERING - 130 Mark

Chapter Name - Marks

1. Basic Concepts of Electrical Engineering – 10 Mark

2. Electrical Materials – 15 Mark

3. Capacitors – 20 Mark

4. Inductors – 15 Mark

5. Magnetic Circuits – 20 Mark

6. Electromagnetic Inductions - 20 Mark

Chapter – 1 “Basic Concepts of Electrical Engineering”

Concept of current (D.C./A.C.)

Concept of voltage (D.C./A.C.)

- E.M.F.

- Potential difference

- Terminal voltage

Concept of Resistance

- Properties.

- Classification of resistors based on ohmic value & material.

- Practical application of above types of resistors.

- Use of a rheostat in laboratory.

Concept of Conductor, Insulator, Semiconductor.

Chapter – 2 “Electrical Materials”

Conducting materials & properties.

Insulating materials & properties.

Magnetic materials & properties.

Semi Conduction materials & properties.

Chapter – 3 “Capacitors”

Concept of capacitor formation, Expression for capacitance.

Energy stored in Capacitor.

Dielectric loss.

Dielectric materials used in capacitors, Types of capacitors.

Effect of dielectric media on Capacitance.

- Electric field strength

- Electric flux density.

- Permittivity.

Expression for capacitance of Parallel plate capacitor.

Series & parallel combination of capacitors.

Charging and discharging of capacitors (no derivation, only numerical)

Concept of inter-turn capacitance, line capacitance, capacitance in

Cables, overhead transmission & distribution lines.

A.C./D.C. capacitors and applications.

Chapter – 4 “Inductors”

Different types of inductors Construction.

Rise and decay of current in an inductor (No derivation, only numerical)

Energy stored in inductor (No derivation, only numerical)

Inductance in A.C. and D.C. circuits.

Chapter – 5 “Magnetic Circuits”

Concept of magnetic flux.

Concept of electromagnetism.

- Magneto motive force.

- Magnetic field strength

- Permeability.

- Reluctance.

Magnetic leakage, leakage coefficient.

Magnetic circuits

- Uniform magnetic circuits.

- Series & parallel circuits.

Comparison of electric & magnetic circuits.

Chapter – 6 “Electromagnetic Induction”

Review of Faraday’s laws of electromagnetic induction.

Induced E M.F’s.

Fleming’s R.H. rule; direction of induced E.M.F.

Concept of self and mutual inductances.

Expression for self and mutual inductances.

- Application of Faraday’s laws.

Interaction between two or more magnetic field.

Force on a current carrying conductor placed in a magnetic field.

Fleming’s L.H. rule.

Numericals on above.

2. SUBJECT - ELECTRICAL DRAWING - 130 Mark

Chapter Name - Marks

1. Symbols and Codes - 10 Mark

2. Mountings 15 Mark

3. Domestic Wiring - 15 Mark

4. Instrument circuit - 15 Mark

5. Constructional Features of Electrical Machines - 20 Mark

6. Power System - 15 Mark

7. Cables - 10 Mark

Chapter – 1 “Symbols and Codes”

ISI Symbols in electrical engineering

Conventions for circuit and schematic representation of electrical and

electronic components, instruments and equipment

Chapter – 2 “Mountings”

Different types of mountings

Enclosures for electrical equipments

Panel wiring with CB, isolator, synchroscope, regulator, etc

Plate & Pipe earthing

Chapter –3 “Domestic Wiring”

All types of light circuit

Fluorescent tube & fan circuit wiring

Intermediate switch circuit

Chapter – 4 “Instrument circuit”

Connection of all types of meters (PMMC, Moving Iron, dynamo

Meter, Induction type.

Extension of range using shunt, multiplier, CT, PT

Chapter – 5 “Constructional Features of Electrical Machines”

Parts of a transformer, D.C. machines, alternators, induction motors,

Development diagram of windings of D.C. and A.C. machines

AC & DC Motor starter

Chapter – 6 “Power System”

Transmission line structure

Bushings, insulators

Overhead conductor joints

Substation drawing, lightning arrestors

Chapter – 7 “Cables”

Cross-section of Cables, Power cable laying, cable joints

3. SUBJECT - FUNDAMENTALS OF MECHANICAL ENGINEERING - 130 Mark

Chapter Name - Marks

1. Properties and Testing Of Materials – 10 Mark

2. Materials – 10 Mark

3. Metallurgical processes – 10 Mark

4. Fluid Mechanics – 15 Mark

5. Pump and Water Turbine – 10 Mark

6. Power Transmission – 10 Mark

7. Strength of Material – 15 Mark

8. Thermodynamic – 20 Mark

Chapter – 1 “Properties and Testing Of Materials”

Introduction

Mechanical properties-stress

Strain

Strength

Elasticity

Plasticity

Ductility

Toughness

Brittleness

Hardness

Malleability

Formability

Weld ability

Tensile strength

Fatigue

Stiffness

Tenacity

Modulus of elasticity

Modulus of rigidity

Endurance

Poisson’s ratio

Proportional limit

Yield point

Ultimate strength fabrication characteristics

Destructive and non-destructive testing

Stress-strain diagram

Hardness tests

Impact tests

Chapter – 2 “Materials”

Introduction

Ferrous materials cast iron

Classification

Wrought iron

Steel-classification-Alloy steels Major alloying elements

Stainless steel-low carbon medium carbon and high carbon steels

Classification of alloy steels

Tools steels

Non-ferrous metals-copper properties

Application and classification

Brass –types bronze-types and applications

Special alloys-high tensile brass German silver

Monel metal

Bearing alloys

Aluminum-classification and application

Zinc-properties

Zinc alloys

Tin properties-application

Plastic-classification

Application

Lubricants-properties and selection

Chapter – 3 “Metallurgical processes”

Introduction-various processes

Secondary processes

Application of powder metallurgy

Advantages and disadvantages

Welding-purpose

Types forged welding

Soldering

Brazing

Chapter – 4 “Fluid Mechanics”

Hydrostatics - Fluids and their properties, Liquid pressure,

Intensity of Pascal’s law, Pressure head of liquid, Total pressure,

Concept of atmospheric and gauge pressure, Absolute pressure.

Fluid flow - types of flow, Bernoulli’s theorem statement and

application, U tube manometer, Venturi meter, pitot tube, orifice

meter, Cc, Cv & Cd, simple problem related to Bernoulli’s theorem

Chapter – 5 “Pump And Water Turbine”

Pump – Reciprocating pump, centrifugal pump, compression

Between Reciprocating & centrifugal pump

Turbines- purpose, type, construction and working of Pelton wheel,

Francis and Kaplan turbine

Hyde Power Plant- it’s construction and working processes

Chapter – 6 “Power Transmission”

Importance of power transmission, Model of power transmission and

it’s application, Belt and rope drive systems, power transmission by

Gears and chains, role of coupling and journal in power, transmission

Simple problem related with belt drive velocity ratio, max. Power

Transmission through belt drive.

Chapter – 7 “Strength of Material”

Definition of bending, shear force and bending moment, S.F. & B.M.

diagrams for cantilever, simply supported and over hanging beams with

point & U.D.L. Theory of simple bending, bending stresses in beams,

moment of resistance, section modulus, theory of pure torsion of circular

shaft, polar modulus, torsional rigidity classification of frames, stresses

in frames.

Chapter – 8 “Thermodynamic”

Properties of gases, Charle’s law, Boyle’s law, characteristic equation

For perfect gas, 1st & 2nd law of thermodynamics, enthalpy and entropy,

Various processes like isobaric, isothermal, isentropic throttling process

polytropic process. Ideal heat engine cycles, thermal efficiency, I. HP and

B HP, Basic steam power cycle, Classification of boiler, boiler mountings

And accessories. Modern high pressure boiler, internal combustion engine

Introduction, classification and working principle of 2 stroke and 4 stroke

Cycle engine.

4. SUBJECT - BASIC ELECTRONICS - 130 Mark

Chapter Name - Marks

1. Introduction to semiconductor devices - 15 Mark

2. Rectifiers & Filters – 15 Mark

3. Feedback Amplifiers – 15 Mark

4. Multistage Amplifiers – 15 Mark

5. Tuned Amplifiers – 15 Mark

6. Oscillators – 15 Mark

7. Pulse & Switching Circuits – 10 Mark

Chapter – 1 “Introduction To Semiconductor Devices”

P-N junction diode - concept of barrier potential, forward & reverse

biasing, V-I characteristics & applications

Zener Diode - Symbol, working principle, characteristics & applications

Transistor- Basic structure, PNP & NPN types, transistor configuration,

Characteristics, switching action, transistor biasing and applications.

Chapter – 2 “Rectifiers & Filters”

Half wave rectifiers.

Full wave rectifiers (Center-tap & Bridge).

Ripple factor, PIV, rectification efficiency, comparison, merits and

Demerits of different types of rectifier.

D.C. improvement techniques - a) RC filter b) LC filter c) ? -filter.

Zener Diode as Shunt regulator.

Transistor Series regulator (using single transistor)

Complete D.C. Power Supply Circuit

(using series regulator comparator & current limiter stage.)

Chapter – 3 “Feedback Amplifiers”

Concept of feedback, Block diagram of feedback systems,

feedback factor (Beta).

Types of feedback, strengths and limitations of negative feedback.

Feedback connections- voltage-series, voltage-shunt,

current-series, current shunt.

Single stage amplifier – working, effect of negative feedback.

Emitter follower circuit – effect of negative feedback.

Feedback with & without bypass capacitor in single stage CE amplifier.

Chapter– 4 “Multistage Amplifiers”

General block diagram of multi-stage amplifier, necessity of multistage amplifiers.

Different coupling methods – working, frequency response,

Applications and comparison of: a) RC coupled, b) LC coupled,

c) Direct-coupled, and d) Transformer coupled amplifiers.

Chapter – 5 “Tuned Amplifiers”

Concept of resonance circuit

Concept of tuned amplifier

Single-tuned voltage amplifier, its frequency response and limitation.

Double-tuned voltage amplifier, its frequency response and

limitation.

Concept of staggered tuning.

Chapter – 6 “Oscillators”

Principle of Oscillations; Barkhausen Criteria.

Working of RC Oscillators – phase-shift and Wien bridge; LC

Oscillators - tuned collector, tuned base, Hartley and Colpitt's;

Crystal Oscillator.

Chapter – 7 “Pulse & Switching Circuits”

Diode and transistor as a switch.

Wave shaping circuits – clipper, clamper, differentiator and integrator

using passive components.

Multivibrators – Bistable, Monostable and Astable type circuit.

5. SUBJECT - ELECTRICAL CIRCUIT – 130 Mark

Chapter Name - Marks

1. Principles of Circuits – 10 Mark

2. Analysis of Network using Circuit principles – 10 Mark

3. Network Theorem – 25 Mark

4. Basic Concepts of A.C. Circuit – 05 Mark

5. Complex number – 05 Mark

6. Single Phase A.C. Circuit – 25 Mark

7. Three Phase A.C. Circuit – 20 Mark

Chapter – 1 “PRINCIPLES OF CIRCUITS”

Ohms Law

Series & parallel Resistive Circuits

Kirchhoff’s voltage law

Kirchhoff’s current law

Sign convention.

Application to simple circuits.

Chapter – 2 “ANALYSIS OF NETWORK USING CIRCUIT PRINCIPLES”

Mesh current analysis.

Node voltage analysis (Numericals on D.C.)

Chapter – 3 “NETWORK THEOREMS”

Superposition theorem.

Thevenin’s theorem.

Norton’s theorem.

Source conversion.

Maximum power transfer theorem.

Star delta transformation. (Numericals on D.C.)

Chapter – 4 “BASIC CONCEPTS OF A.C. CIRCUITS”

Sinusoidal A.C. voltage generation.

Definition of various terms used in sine wave.

Response of basic R,L and C elements to A.C.

Chapter – 5 “COMPLEX NUMBERS”

Rectangular form.

Polar form.

Rectangular to polar conversion.

Polar to rectangular conversion

Chapter – 6 “SINGLE PHASE A.C. CIRCUITS”

Series A.C. circuits.

R-L, R-C, & R-L-C circuits. Impedance,

Reactance, Phasor diagram. Impedance triangle. Power factor,

Average power, Apparent power , Reactive power, Power triangle.

Series resonance, quality factor.

Parallel A.C. circuits. R-L, R-C, & R-L-C circuits.

Admittance, Susceptance, Solution by admittance methods, vector

Method, & complex algebra method.

Chapter – 7 “THREE PHASE A.C. CIRCUITS”

Generation of three phase emf.

Phase sequence polarity marking.

Connection of three phase windings. Star connection & Delta

connection.

Line & phase quantities in star connected load.

Line & phase quantities in delta connected load.

Power in three phase system with balanced star, delta connected load.

Concept of unbalanced load.

Advantage of poly phase circuits.