EEE 2224.pdf

Khulna University of Engineering & Technology Department of Electrical and Electronic Engineering Course No: EEE 2224 Course Title: Sessional on Basic Electrical Engineering Credits: 0.75

Course Teachers 1. Md. Salah Uddin Yusuf Associate Professor of EEE 2. Protik Chandra Biswas Lecturer of EEE

Marks Distribution Attendance:  Lab Reports and Class Performance:  Quizzes:  Central Viva: Total 

10% 50% 20% 20% 100%

Protik_Lecturer_Department of EEE

List of Experiments Exp. No 01

02

Name of the Experiment (a) Familiarization with Some Electrical Components and Electrical Measuring Instruments (b) Fundamental Concepts on AC Circuit (a) Study of Series Circuit and Parallel Circuit and Verification of KVL and KCL (c) Measurement of Power by Wattmeter Protik_Lecturer_Department of EEE

List of Experiments Exp. No

03

04 05

06

Name of the Experiment

(a) Determination of Circuit Parameters of an AC RLC series circuit (b) An Experiment on Power Factor Improvement Experiment on Illumination and its Calculation of a Room. Study on Electrical Wiring for Building Study on total electrical load calculation, estimating and costing for building wiring. Protik_Lecturer_Department of EEE

Exp. No: 01 Exp. Name: (a) Familiarization with Some Electrical Components and Electrical Measuring Instruments (b) Fundamental Concepts on AC Circuit 

Circuit: A close conducting path through which an electric current either flows or intended to flow

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Electrical Parameters: The various elements of an electric circuit are called its parameter, like resistor, inductor, capacitor, voltage source, current source etc.  

Active Elements: Voltage source, Current source Passive Elements: Resistors, Inductors, Capacitors Protik_Lecturer_Department of EEE

Active Elements Voltage Source: A voltage source is a two terminal device which can maintain a fixed voltage.

Current Source: A current source is an electronic circuit that delivers or absorbs an electric current which is independent of the voltage across it. i.e. which can deliver a constant current.

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Current Source

Current Source

Active Elements

Fig. Time-invariant and time-variant voltage and current sources Protik_Lecturer_Department of EEE

Passive Elements Resistor: Ex: Incandescent Bulb, Variable Resistor Rating: Resistance, Tolerance, Power ratings Symbol: Resistor Variable resistor (Rheostat)

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Passive Elements Inductor: Ex: Ballast or Choke Rating: Inductance, Current ratings Symbol:

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Passive Elements Capacitor: Ex: Capacitor bank Rating: Capacitance, Voltage ratings Symbol: Capacitor Variable Capacitor

Protik_Lecturer_Department of EEE

Electric Meter Different Electrical Meters for Measurement Purpose:  Galvanometers  Ammeters  Voltmeters  AVO meter (Commercially called Multimeter)  Wattmeter

Protik_Lecturer_Department of EEE

Ammeter  

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A current measuring instrument Measures the amount of current flow through the circuit Ammeter is a low resistance device

Ammeter is always connected in series with the branch whose current is to be measured

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Ammeter Connection Diagram of Ammeter

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Ammeter 

Two types _ DC Ammeter _ AC Ammeter

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A DC ammeter is polarity marked with +Ve and –Ve sign

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The +Ve polarity of DC ammeter have to be connected to the current entering side of the circuit

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DC Ammeter This mark of straight line indicate DC ammeter

Range Extension

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AC Ammeter

This mark of straight line indicate AC ammeter

Range Extension

Protik_Lecturer_Department of EEE

Voltmeter 

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To measure electrical potential difference between two points in an electric circuit Voltmeter is a high resistance device

Voltmeter have to be always connected across the load

Protik_Lecturer_Department of EEE

Voltmeter Connection Diagram of voltmeter

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Voltmeter 

Two types _ DC Voltmeter _ AC Voltmeter

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In a DC voltmeter the terminals are provided with polarity marking (+Ve and –Ve)

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To use DC voltmeter precaution should be taken about the polarity marking

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In an AC voltmeter there is no such polarity marking Protik_Lecturer_Department of EEE

DC Voltmeter

This mark of straight line indicate DC voltmeter

Range Extension

Protik_Lecturer_Department of EEE

AC Voltmeter

This mark of straight line indicate AC voltmeter

Protik_Lecturer_Department of EEE

Multimeter 

It is also known as Electronic VOM or AVO meter

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Used to measure current, voltage and resistance both for AC and DC quantity, for a number of ranges

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Some multimeter provide the facilities of measuring inductance, capacitance, temperature

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Two type _ Analog AVO meter _ Digital AVO meter Protik_Lecturer_Department of EEE

Multimeter

Analog Multimeter

Digital Multimeter Protik_Lecturer_Department of EEE

Wattmeter   

To measure electric power in a circuit Wattmeter is generally four terminal device Two terminal are the end points of potential coil (P.C.) and the other two are current coil (C.C.)

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Wattmeter

Basic Wattmeter connection Protik_Lecturer_Department of EEE

Wattmeter

Analog Wattmeter Protik_Lecturer_Department of EEE

Report Writing    

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Objectives Introduction (Including Theoretical background) Apparatus Required Experimental Setup or Circuit Diagram Experimental Data Calculation Graphs or Vector Diagram (if any) Results Discussion Conclusion Question & Answer References Protik_Lecturer_Department of EEE

Report Writing Objectives  Main purpose of the experiment have to be mentioned  Ultimate learning from the experiment should be depicted  Should be mentioned in points Introduction  Mention introductory description and working principal of the experiment  Theoretical background of the experiment have to note down Protik_Lecturer_Department of EEE

Report Writing Apparatus Required  Equipment, which are used in the experiment, have to write down with their detail ratings and quantity  Should be a tabular form Experimental Setup  Circuit diagram of the experiment with all necessary electrical sign  Name of the figure must be mentioned Example: Fig. (2.1): Pictorial view of ammeter

Protik_Lecturer_Department of EEE

Report Writing Experimental Data  Should be written in table Calculation  Elaborate calculation of the whole work Graphical Representation  Proper Scaling of axis  Encircle the plotted data points  Labeling (Units should be included)  Figure No along with figure name should be mentioned Protik_Lecturer_Department of EEE

Report Writing Result & Discussion  Most important part of a report  Discuss your results  Mention numerical values (if any).  Compare the physically measured results with the theoretically calculated results  If there is deviation between these results, then mention the scientific reasons for this deviation  Give the description of graphical representation (if any) on the basis of theoretical background

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Report Writing Conclusion  Mention what are the learnings from this experiment  Note down the advantages of this experiment in practical field Question & Answer  Questions given at the end of each experiment, must be written with appropriate answer Reference  Sources (Books, Journal etc.) , you have used to write the report, have to be mentioned Protik_Lecturer_Department of EEE

Book References 

Introductory Circuit Analysis By Robert L. Boylestad

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A Text Book of Electrical Technology, Volume I By B.L. Theraja and A.K. Theraja

Protik_Lecturer_Department of EEE

THANKS TO ALL Presented By

Protik Chandra Biswas Lecturer Department of Electrical and Electronic Engineering Khulna University of Engineering & Technology

Protik_Lecturer_Department of EEE