Exam Compass - PSU Quiz Flashcards
A PC Power Supply Unit (PSU) can accept the voltage of 110-120 VAC (Volts of Alternating Current), or 220-240 VAC. PSU’s operation can be adjusted to the supplied voltage either with the use of a manual selector switch on the back of the device or automatically by the device. PSUs equipped with manual selector switch are referred to as fixed-input devices, PSUs offering automatic voltage adjustment are known as auto-switching PSUs.
True
False
True
Which of the acronyms listed below refers to the type of electric current supplied to most of the internal PC components?
AC
HVDC
DC
PFC
DC
Which of the following answers refer(s) to voltages generated by modern PC power supplies? (Select all that apply)
+/-3 V
+3.3 V
+5 V
+5.5 V
+/-12 V
+3.3 V
+5 V
+/-12 V
Modern ATX motherboards use a 24-pin power connector, however many power supplies might be equipped with a 20-pin power connector for backward compatibility with older motherboards and a separate 4-pin connector for delivering power to PCIe slots on newer motherboards. The 20+4 connector can be used with either 20- or 24-pin motherboards (in case of a 20-pin motherboard power slot, the 4-pin connector simply remains unattached to the board).
True
False
True
What is the name of a device that can provide short-term emergency power during an unexpected main power source outage?
UPS
PoE
SVC
PSU
UPS
Which of the terms listed below refers to a server load balancing setup in which supplied power is split between multiple PSUs?
Standby UPS
Redundant power supply
Dual-power supply
Managed PDU
Redundant power supply
The term “Modular power supply” refers to a PSU equipped with detachable cables.
True
False
True
The power output rating of a PSU is based on a measurement unit known as:
Amp
Hertz
Volt
Watt
Watt