Department of Leather Engineering (LE) Khulna University of Engineering & Technology (KUET)

1. Course No. : EEE 1120 Course Title : Sessional on EEE 1119 Credits: 0.75 Course Teacher • Mr. Muhammad Mainul Islam • Assistant Professor, Dept. of EEE, KUET • Mr. Abu Syed Md. Jannatul Islam • Lecturer, Dept. of EEE, KUET Department of Leather Engineering (LE) Khulna University of Engineering & Technology (KUET)

2. Today’s Experiment Exp. No. : 01 Name of the Experiment: Familiarization with lab equipment's of electrical circuit lab and measurement of voltage, current, power for both AC and DC supply. AJI

3. Task ! ! ! ! ! ! ! ! • AC • DC AJI

4. AC

5. AC • Alternating current describes the flow of charge that changes direction periodically. • As a result, the voltage level also reverses along with the current. AJI

6. AC AJI

7. DC AJI

8. Task ! ! ! ! ! ! ! ! How can you measure these AC or DC voltage or Current??? AJI

9. Commonly used Electric Meters • Ammeter • Voltmeter • Wattmeter AVO meter, Commercially called Multimeter AJI

10. Ammeter Measures The amount of Current flow through the circuit Types: 1. DC Ammeter 2. AC Ammeter AJI

11. Schematic Diagram of Ammeter Ammeter Should always be connected in Series with Load AJI

12. Pictorial View of DC & AC Ammeter AC Ammeter DC Ammeter AJI

13. Voltmeter • Used to measure Electrical potential difference between two points in an electric circuit Types: 1. DC Voltmeter 2. AC Voltmeter AJI

14. Schematic Diagram of Voltmeter Voltmeter must be connected in Parallel with Load AJI

15. Connection Diagram of Voltmeter AJI

16. Pictorial View of DC & AC Voltmeter DC Voltmeter AC Voltmeter AJI

17. Multimeter/AVO meter • A multimeter is a device used to measure voltage, resistance and current in electronics & electrical equipment. • It is also used to test continuity between to 2 points to verify if there is any breaks in circuit or line. • There are two types of multimeter Analog & Digital • Analog has a needle style gauge • Digital has a LCD display AJI

18. Multimeter/AVO meter AJI

19. Multimeter/AVO meter • Red meter lead Is connected to Voltage/Resistance or amperage port and Is considered the positive connection • Blackmeter lead Is always connected to the common port and Is considered the negative connection • ProbesAre the handles used to hold tip on the tested connection • TipsAre at the end of the probe and provides a connection point AJI

20. Measuring Continuity AJI

21. AJI

22. AJI

23. Tumbler Switch AJI

24. Wattmeter Measures the Electric power in watts Types: 1. Analog Wattmeter 2. Digital Wattmeter AJI

25. Pictorial View of Wattmeter: AJI

26. Schematic Diagram of Wattmeter cc pc Measured Power,P=VI AJI

27. Wattmeter AJI

28. Rheostat It is an adjustable or variable resistor. It is used to control the electrical resistance of a circuit without interrupting the flow of current. Rheostat has 3 terminals and usually consist of a resistive wire wrapped to form a toroid coil with a wiper that slides along the surface of the coil. AJI

29. Capacitor A capacitor is a passivetwo-terminalelectrical component that stores electrical energy in an electric field. The effect of a capacitor is known as capacitance. AJI

30. Ballast An electrical ballast is a device placed in line with the load to limit the amount of current in an electrical circuit. It may be a fixed or variable resistor. A familiar and widely used example is the inductive ballast used in fluorescent lamps to limit the current through the tube, which would otherwise rise to a destructive level due to the negative differential resistance artifact in the tube's voltage-current characteristic. AJI

31. Report Writing: 01. Objectives 02. Introduction 03. Apparatus Required 04. Experimental Setup or Circuit Diagram 05. Experimental Data 06. Calculation 07. Graphs (if any) 08. Results and Discussion 09. Conclusion 10. Question & Answer(if any) 11. References AJI

32. Objectives: • Purpose of Experiment e.g.To be familiar with the working principle of various electric meters. • Should be mentioned in points AJI

33. Introduction: • Introductory Description. e.g. Why and where ammeter, voltmeter & wattmeter are used. • Working principle and additional figures AJI

34. Apparatus Required: • Should be mentioned in numbers • Name of Equipments with rating • Quantity AJI

35. Experimental Setup: • The diagram of the work • Specify the Equipments • Direction of current flow • Polarity (if any) AJI

36. Experimental Data: • Should be written in table • Draw Table using Pencil/Pen & scale. AJI

37. Calculation: • Elaborate Calculation of the whole work [will be written in the board] AJI

38. Graph: • Proper Scaling of axis • Encircle the plotted data points • Labeling [Units should be included] • Figure No. along with figure name and Table No. along with table should be mentioned AJI

39. Result & Discussion: • Discuss your results • Is there any error in results & why? • Is there any deviation in your result from ideal value & why? • Comparison between measured and ideal value. • Mention numerical values (if any). • Discuss your graphs. AJI

40. Conclusion: • What have you learnt from this experiment? • What is the necessity of this experiment? • What is the way to abase the error [if any] AJI

41. Question and Answer: • Questions must be written in your report. • Relevant answer should be written. AJI

42. Reference: • Sources- you have used to write the report • For more references – write in numbers e.g. [1] writer name, “source name”. [2]……………. AJI

43. References of Today’s Experiment • [1] B.L. Theraja, “A Textbook of Electrical Technology, Volume I”. • [2] Robert L. Boylestad, “Introductory Circuit Analysis”. AJI

44. Marks Distribution: Attendance: 10% Lab Reports and Class Performance: 50% Quizzes: 20% Central Viva: 20% Total 100% AJI

45. Top page of Sessional Report: AJI

46. AJI