1. Chapter 4 Questions April, James, Nickie, & Alex

2. 1- 7 Questions April

3. 1. Volts are a measure of what characteristic of electricity?

4. Answer: electrical "pressure" differential

5. 2. What is the normal voltage of house electricity in the United States?

6. Answer: 120 V

7. 3. Hot wires in home wiring are normally colored _____ and ground wires in computers are normally colored ______.

8. Answer: Black, Black

9. 4. What is the difference between a transformer and a rectifier? Which are found in a PC power supply?

11. A transformer is a device that changes the ratio of current to voltage.

13. Answer: +12V, -12V, +5V, -5V, +3.3V

14. 6. What is the purpose of the 4-pin auxiliary connector on a motherboard?

15. Answer: To provide an additional 12V power supply to the processor.

16. 7. How many pins does the main power connector on a BTX board have?

17. Answer: 24-pins

18. 8-14 Questions James Harris

19. 8 What form factor for the case and power supply does a NLK motherboard use?

20. Answer ATX

21. 9 Describe the purpose of the ground line in a house circuit. What is the electrical symbol for ground?

22. Answer To prevent uncontrolled electricity from continuing to flow indefinitely Earth

23. 10 What is the basic electronic building block of integrated circuit?

24. Answer Transistor

25. 11 Why is a power supply dangerous even after the power is disconnected?

26. Answer Electricity is built up in a power supply and can still cause a spark

27. 12 What is the symbol for a diode?

28. Answer

29. 13 What is a simple way to detect EMI?

30. Answer Put a radio next to several electronic devices

31. 14 What is an unintended, high-current, closed connection between 2 points in a circuit called?

32. Answer Short or short cut

33. 15 – 22 Questions Nickie

34. 15. Which form factor uses a riser card on the edge of the motherboard?

35. LPX and Mini-LPX has a riser card

36. 16. List 4 types of computer case form factors, What is the most popular type of form factor for PCs today?

37. 1.AT 2. ATX3. MicroTX4. BTXATX is the most commonly used form factor today.

38. 17.List 3 advantages an ATX system has over a Baby AT system.

39. 1. Fewer wires 2. Easier installation3. Components on the motherboard don’t face each other.

40. 18. List 4 computer symptoms that indicate a faulty power supply.

41. 1. Hang 2. Reboot3.Give intermittent errors4.Wont boot at all

42. 19. According to ACPI standards, the S1 mode causes what 2 devices to stop using power?

43. hard drive and monitor

44. 20. What is another name for the ACPI standard S4 mode?

45. Hibernation

46. 21. What power management standard is older then ACPI and has mostly been replaced by ACPI?

47. (APM)advanced power management.

48. 22. How can u easily tell if a computer is designed to comply with Green Standards?

49. The display of the green star energy logo

50. 23-30 Questions Alex Coffey

51. 23.) What unit of measure is used to describe the amount of work a surge suppressor can do before it stops protecting the circuit from an electrical surge?

52. Joule

53. 24.) Why is it important to have an indicate light on a surge suppressor?

54. Indicates the device is protecting equipment from overvoltage's

55. 25.) What are the two main types of uninterruptable power supplies?

56. Standby Device: Battery-powered circuit is used when AC input fails.Inline Device: Battery-powered circuit is used continually.

57. 26.) How does a smart UPS differ from one that is not smart?

58. The difference between a smart UPS and a nonsmart UPS is a smart UPS can be controlled by software.

59. 27.) If you are asked to identify the form factor of a motherboard, what are two criteria you can use to help you identify the board?

60. Check the size, and configuration of hardware components.

61. 28.) What are three motherboard form factors that can be used with a compact case?

62. NLX, LPX, Mini-LPX

63. 29.) What is one thing you can regularly do to prevent a computer system from overheating?

64. Use compressed air or antistatic vacuum to remove dust from the power supply, the vents over the entire computer, and the processor heat sink.

65. 30.) Which type of case form factor is best designed to keep a system cool?

66. ATX