![]() When taking a computer apart, why is it important to not stack boards on top of each other? What is the purpose of a POST diagnostic card? How does a smart UPS differ from one that is not smart?Ī smart UPS can be controlled by software from a computer to allow additional functionality. What are the two main types of uninterruptible power supplies? So you can tell when the surge suppressor is no longer providing protection against a power surge. Why is it important to have an indicate light on a surge suppressor? 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? What two measurements are used to rate the capacity of a UPS? What device protects a system against blackouts? What device protects a system against lighting strikes but does not protect against sags and brownouts? What is an unintended, high-current, closed connection between two points in a circuit called? Try putting the radio next to several electronic devices to detect the EMI they emit. With the radio on, you can hear the static produced by EMI. On an inexpensive AM radio, turn the tuning dial away from a station into a low-frequency range. Which permanently damages a computer component, damage caused by ESD or damage caused by EMI? Which tool of a PC support technician is the most important tool to protect the system against ESD? Why is a power supply dangerous even after the power is disconnected?Ĭapacitors inside a PC power supply create the even flow of current needed by the PC. Which one component in a high-end gaming computer is likely to draw the most power? How do you determine the wattage capacity needed by a power supply?Īdd up all wattage requirements for all devices that will use the power supply and then add an additional 30%. What is the purpose of the 4-pin Molex connector? To provide extra voltage for a processor. What is the purpose of the 4-pin auxiliary connector on a motherboard? Video card that uses the PCI Express, Version 2 standard. ![]() What device uses the 12V 8-pin power connector? Video card that uses the PCI Express, Version 1 standard. What device uses the 12V 6-pin power connector? What are the five voltages that can be produced by an ATX or BTX power supply? Which voltage is seldom used? A computer power supply functions as both. A transformer is a device that changes the ratio of current to voltage. What is the difference between a transformer and a rectifier? Which are found in a PC power supply?Ī rectifier is a device that converts alternating current to direct current. What is the normal voltage of house electricity in the U.S.? Which type of computer case is most popular for desktop systems? Which type of case form factor is best for keeping a system cool? ![]() How many pins does the main power connector on a BTX motherboard have? Which form factor uses a riser card on the edge of the motherboard? Which form factor is a smaller version of the Micro ATX form factor? What are the maximum dimensions for a motherboard that uses the Micro ATX form factor? How many pins does the P1 connector have that uses the ATX Version 2.2 standard? ![]()
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