Interactive

1. Engineering Interactive Workshop Eng. Mageda Al-Moubarak Eng. Fadia El-ssa

2. Contents • Electric Elements • Instruments

4. Active Elements • Active elements are capable of providing an average power greater than zero to external devices, over an infinite period of time. • Examples Current source: produces a current in a conductor Voltage source: produces a potential difference between two points.

5. Passive Elements • Passive element is an element of the electrical circuit that Does Not create Power. Resistors, Capacitors, Inductors and diodes are examples of passive elements.

6. Voltage and Current • Voltage: A measure of the work to move a charge. Voltage= Energy/ Charge. • Current: Charge in motion Current= Charge/ Time. • Power = V*I= Energy * Charge = Energy Charge Time Time

7. Resistor • When a voltage V is applied across the terminals of a resistor, a current I will flow through the resistor. • The current is directly proportional to the voltage using ohm’s law I=1*V • R • Where the slope of the line = 1/R

8. Series Parallel

11. Shorted Resistor

13. Potentiometer

15. Capacitor • Capacitance C, measured in Farads - is an electronic component consisting of a pair of conductors separated by adielectric(insulator). • When there is a voltage across the conductors, a static electric field develops, that stores finite amount of energy. • Impedance Zc= 1/jωc, Where ω = 2πf.

16. Series Parallel

17. In the capacitor the Current leads the Voltage.

18. Inductor • Inductance L, measured in Henries –Typically an inductor is a conducting wire shaped as a coil. • electric current passing through the inductor creates a magnetic field and thus stores energy. • Impedance ZL= jωL , where ω = 2πf.

19. Series Parallel

20. In the inductor the Voltage leads the Current.

21. CIVIL

22. Diode • A diode is a two-terminal electronic component that conducts electric current in only one direction. • The most common function of a diode is to allow an electric current to pass in one direction while blocking current in the opposite direction.

23. Light Emitting Diode (LED)

24. Bread Board

26. Power Supply

27. Digital Multi-Meter (DMM)

28. Function Generator

29. Cathode Ray Oscilloscope

30. THE END

31. A. A capacitor can be used like a temporary battery. TRUE

32. B. In an Inductor The Current leads the Voltage. False

33. C. Current is inversely proportional to the voltage. False

34. D. The Impedance of the Capacitor depends on the input’s frequency. TRUE

35. E. A student advised His friend to place the LED as follows False

36. 1. Give 3 ways in which you can have an Equivalent Resistance of 60 KΩ. Given the following resistances, Two 1.2 * 105Ω 20 K Ω 12 K Ω 50 K Ω potentiometer. 47 K Ω 1 K Ω • Two 1.2 * 105Ω in parallel • 20 K Ω and 40 from the 50 K Ω potentiometer in series. • 12 K Ω, 47 K Ω, and 1 K Ω in Series.

37. 2.Design a circuit consisting of 2 resistors and a power supply of 9 V, whose Current is 3mA.

38. Using the Following Color Code. What is the value of this resistor? 82000Ω with ±5%

39. 5. How can you discharge a capacitor? Connecting it with a resistor

40. 6. Find the Equivalent Inductance of the following circuit. Leq=8mH

41. LED stands for …………………… Light Emitting Diode

42. B. Digital Multi-meter is used to measure ……………………………, …………………………, and ……………………… Resistance Voltage Current

43. C. DC offset Knob is found in an instrument which is ………………………… Function Generator

44. E. To generate a Square Wave. We Should use a(n) ………………………………. Function Generator

45. Given a 10K Potentiometer, and a fixed power supply of 5 V. Draw a circuit to show how you can get 3 V output. 5* R2 = 3V 10K R2= 6KΩ R1=10K-6K=4K Ω