A+ Essentials Chapter 8

7 Questions | By Darren McMahon | Updated: Mar 21, 2022 | Attempts: 422

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Power SuppliesIn this chapter, you will learn how to• Explain the basics of electricity• Describe the details about powering the PC• Install, maintain, and troubleshoot power supplies

Questions and Answers

1.

When testing an AC outlet in the U.S., what voltage should the multimetershow between the hot and ground wires?
- A.
  
  120 V
- B.
  
  60 V
- C.
  
  0 V
- D.
  
  –120 V
2.

What voltages does an ATX12V P1 connector provide for the motherboard?
- A.
  
  3.3 V, 5 V
- B.
  
  3.3 V, 12 V
- C.
  
  5 V, 12 V
- D.
  
  3.3 V, 5 V, 12 V
3.

Joachim ordered a new power supply but was surprised when it arrivedbecause it had an extra, 4-wire connector. What is that connector?
- A.
  
  P2 connector for plugging in auxiliary components
- B.
  
  P3 connector for plugging in case fans
- C.
  
  P4 connector for plugging into Pentium 4 and later motherboards
- D.
  
  Aux connector for plugging into a secondary power supply
4.

What voltages should the two hot wires on a Molex connector read?
- A.
  
  Red = 3.3 V; Yellow = 5 V
- B.
  
  Red = 5 V; Yellow = 12 V
- C.
  
  Red = 12 V; Yellow = 5 V
- D.
  
  Red = 5 V; Yellow = 3.3 V
5.

Why is it a good idea to ensure that the slot covers on your computer case areall covered?
- A.
  
  To maintain good airflow inside your case.
- B.
  
  It helps keep dust and smoke out of your case.
- C.
  
  Both A and B are correct reasons.
- D.
  
  Trick question! Leaving a slot uncovered doesn’t hurt anything.
6.

A PC’s power supply provides DC power in what standard configuration?
- A.
  
  Two primary voltage rails, 12 volts and 5 volts, and an auxiliary 3.3 volt connector.
- B.
  
  Three primary voltage rails, one each for 12-volt, 5-volt, and 3.3-volt connectors.
- C.
  
  One primary DC voltage rail for 12-volt, 5-volt, and 3.3-volt connectors.
- D.
  
  One voltage rail with a 12-volt connector for the motherboard, a second voltage rail with a 12-volt connector for the CPU, and a third voltage rail for the 5-volt and 3.3-volt connectors.
7.

How many pins does a SATA power connector have?
- A.
  
  6
- B.
  
  9
- C.
  
  12
- D.
  
  15