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Chapter 4 Questions April

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Transcript

  • 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?
  • 10. Answer:
    • A rectifier is a device that converts alternating current to direct current. (AC to DC)
    • 11. A transformer is a device that changes the ratio of current to voltage.
    • 12. Both are found in a PC power supply.
  • 5. What are the five voltages produced by an ATX or BTX power supply?
  • 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