# CHARUSAT Electrical Technology Syllabus

CHAROTAR UNIVERSITY OF SCIENCE & TECHNOLOGY

FACULTY OF TECHNOLOGY & ENGINEERING

DEPARTMENT OF ELECTRICAL ENGINEERING

B. TECH. (ELECTRONICS & COMMUNICATION)

2ND YEAR SEMESTER: III

EE 221: ELECTRCAL TECHNOLOGY

______________________________________________________________________

Credit Hours:

Teaching Scheme

Theory

Practical

Total

Credit

Hours/week

3

2

5

4

Marks

100

50

150

A. Objectives of the Course:

Electrical Technology is a subject where a student will deal with various types of electrical machines which are employed in industries, power stations, domestic and commercial appliances etc. The objective of the subject is to learn the basic concepts and in detail, constructional & operational aspects of various electrical machines used in industries and in day to day life and also to impart the basic aspects of substation. To impart the practical knowledge of the various machines for better know how and their applications.

B. Outline of the Course:

Sr. No.

Title of Unit

Min. No. of Hrs

1

D.C. Machines

11

2

Single Phase Transformer

08

3

Three Phase Induction Motor

08

4

Single Phase Induction Motor

04

5

Alternator

06

6

Power Factor Improvement

03

7

Substation

05

Total hours (Theory) : 45

Total hours (Lab) : 30

Total hours : 75

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C. Detailed Syllabus:

1

D.C. Machines

Hrs:

11

Approximate Weightage:

20%

1.1

Principle of D.C Generator and Motor, Construction, Types of Generators and Motors

2

1.2

E.M.F. Equation, Voltage Build Up Process, Critical Resistance and Speed, Losses in generator

1

1.3

No Load & Load Characteristics of separately excited and Shunt, Series and Compound Generators, Performance Equation and Efficiency Examples

2

1.4

Starters: Necessity of Starter, Three Point & Four Point Starter, Introduction to Soft Starter.

1

1.5

Torque-Speed Characteristics of Shunt, Series & Compound Motors

2

1.6

Speed Control: Basic Concept of Static Speed Control of DC Machines, Ward Leonard Method

2

1.7

Losses & Efficiency in D.C. Machines By Direct Load Test And Swinburne Test, Examples

1

2

Single Phase Transformer

Hrs:

08

Approximate Weightage:

18%

2.1

Introduction, Construction And Principle of Single-Phase Transformer

1

2.2

Operation at No Load and On Load, Vector Diagram, Equivalent Circuit

2

2.3

Losses, Efficiency And Regulation, Determination of Regulation and Efficiency by Direct Load Test And Indirect Test Methods, Examples

3

2.4

Parallel Operation, Auto Transformer

1

2.5

Condition For Maximum Efficiency, All Day Efficiency, Examples

1

3

Three Phase Induction Motor

Hrs:

08

Approximate Weightage:

17%

3.1

Introduction, General Principle, Working Principle, Types of three phase induction motor, Synchronous Speed, Speed of Rotor Field, Slip

2

3.2

Starting & Running Torque, Torque-Slip Characteristics, Effect of Rotor Resistance on Performance of I.M, Maximum Torque, Effect of Change in Voltage & Frequency on Torque, Speed & Slip, Examples

2

3.3

Analogy of An I.M. To A Transformer, Power Flow diagram, Efficiency, Examples

1

3.4

Methods of Speed Control of 3- Phase I.M. & Starting of I.M.

2

3.5

Double Cage Squirrel Cage IM And Its Equivalent Circuit, Examples

1

4

Single Phase Induction Motor

Hrs:

04

Approximate Weightage:

10%

4.1

Types of Single Phase Motors, Double Field Revolving Theory, Equivalent Circuit of 1-Phase Induction Motor

2

4.2

Starting & Running Performance of 1-Phase Induction Motor, Split Phase, Resistance Start, Capacitor Start And Capacitor Start & Run Induction Motor, Shaded Pole Induction Motor, Fractional Horse Power Motors Examples

2

5

Alternator

Hrs:

06

Approximate Weightage:

15%

5.1

Types of Synchronous Machines, Construction, Stationary Armature And Rotating Field

2

5.2

3-Phase Generators, Generated Emf, Torque, Operations

1

5.3

Determination of Synchronous Reactance, Voltage Regulation by Synchronous Impedance Method, Examples

3

© CHARUSAT 2012 Page 34 of 154

6

Power Factor Improvement

Hrs:

03

Approximate Weightage:

05%

6.1

Disadvantages of Low Power Factor, Causes of Low Power Factor, Power Factor Improvement, Calculation of Power Factor Correction

2

6.2

Importance of Power Factor Improvement, Most Economical Power Factor, Examples

1

7

Substation

Hrs:

05

Approximate Weightage:

15%

7.1

Classification of Substations, Comparison of Indoor And out Door Substations, Transformer Substation, Pole Mounted Substations

2

7.2

Underground Substations, Symbols and function of Equipments in Substations, Equipment in a Transformer Substation, key diagram of 66kV/11kV substation.

3

D. Instructional Methods and Pedagogy

At the start of course, the course delivery pattern, prerequisite of the subject will be discussed.

Lectures will be conducted with the aid of multi-media projector, black board, OHP etc.

Attendance is compulsory in lectures and laboratory which carries a 5% component of the overall evaluation.

Minimum two internal exams will be conducted and average of two will be considered as a part of 15% overall evaluation.

Assignments based on course content will be given to the students for each unit/topic and will be evaluated at regular interval. It carries a weightage of 5% in the overall evaluation.

Surprise tests/Quizzes/Seminar/Tutorials will be conducted having a share of 5% in the overall evaluation.

The course includes a laboratory, where students have an opportunity to build an appreciation for the concepts being taught in lectures.

Minimum 10 experiments shall be performed in the laboratory related to course contents.

E. Student Learning Outcomes / objectives:

At the end of course, the students will acquire the knowledge regarding the fundamentals of electrical machines. The students will be well aware with the, construction, working principle, operation and application of electrical machines like single phase induction motor, poly phase induction motor, d.c motor, d.c generator, transformer, alternator along with substation.

F. Recommended Study Material:

Text Book:

[1] Theory and performance of electrical machines by J.B.Gupta, S.K.Kataria and sons

[2] A textbook of electrical technology VOL II ( AC & DC machines) by B.L.Theraja & A.K.Theraja S. Chand Publication

[3] Principles of Power System by V.K. Mehta, S.Chand

© CHARUSAT 2012 Page 35 of 154

Reference Book:

[1] B.R. Gupta – Fundamentals of Electrical Machines, A New Age International Publishers

[2] A text book of power system engineering, R.K. Rajput, Laxmi Publications (P) Limited.