Name ________________ Review Questions
SCC CIS 29 Chapter 11 - Electricity and Power Supplies
Instructor Paul Bryant Due April 1, 2000 - Turned in ________________
| # | Question | Answer | Reference |
| 1 | Describe three similarities a closed-circuit water system has with a closed-circuit electrical system | ___________________________________________ | ______________ |
| 2 | Volts are a measure of what characteristic of an electric current? | . | . |
| 3 | What is the normal voltage of house current? | . | . |
| 4 | Why must an ammeter be installed in line with the circuit in order to measure amps? | . | . |
| 5 | Which of the three can be measured with the power off: volts, amps, or ohms? Why? | . | . |
| 6 | Describe the relationship between volts, amps, and ohms in a circuit. | . | . |
| 7 | What are the five voltages produced by an ATX power supply? | . | . |
| 8 | What are the four voltages produced by an AT power supply? | . | . |
| 9 | What is the wattage of a current of 15 amps and a voltage of 120 volts? | . | . |
| 10 | What is the difference between a transformer and a rectifier? Which is a PC power supply? | . | . |
| 11 | Describe the purpose of the ground line in a house circuit. | . | . |
| 12 | What is the basic electronic building block of an integrated circuit? | . | . |
| 13 | Why is a power supply dangerous even after the power is disconnected? | . | . |
| 14 | What is the symbol for a diode? | . | . |
| 15 | What is a simple way to detect EMI? | . | . |
| 16 | What is a closed connection between two points in a circuit called? | . | . |
| 17 | What DVM setting do you use to determine if a fuse is good? | . | . |
| 18 | What DVM voltage range do you use to measure house current voltage, 110 V or 120 V? Why? | . | . |
| 19 | With the PC power turned on, if you have set a DVM to measure voltage and place one probe on a ground lead of a hard drive power connection and the other probe the computer case, what will be the voltage reading? | . | . |
| 20 | List four computer symptoms that indicate a faulty power supply. | . | . |
| 21 | If you measure the voltage of a power supply and find it to be within acceptable ranges, why is it still possible that the power supply may be faulty? | . | . |
| 22 | How much power can a device use in sleep mode if it complies with Green Standards? | . | . |
| 23 | Name one thing that can be set in CMOS that pertains to power management. | . | . |
| 24 | How can you easily tell if a computer is designed to comply with Green Standards? | . | . |
| 25 | Name two ways that a surge suppressor is measured. | . | . |
| 26 | Using a multimeter, what will be the measurement in ohms of a good fuse? | . | . |
| 27 | What are the two main types of uninterruptible power supplies? | . | . |
| 28 | How does an intelligent UPS differ from one that is not intelligent? | . | . |
| 29 | What class fire extinguisher is used for electrical fires? | . | . |
| 30 | What does the term PASS mean when you are using a fire extinguisher? | . | . |
