SSC
COMPUTER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A device that must always be connected to an external power source to work
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Laptop
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Desktop
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Smartphone
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Tab
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Explanation:
Detailed explanation-1: -A power supply unit (PSU) converts mains AC to low-voltage regulated DC power for the internal components of a computer. Modern personal computers universally use switched-mode power supplies.
Detailed explanation-2: -An uninterruptible power supply (UPS) is a device that allows a computer to keep running for at least a short time when incoming power is interrupted.
Detailed explanation-3: -AC-DC adapters accept AC input voltage directly from a wall outlet, and output DC voltage. These are generally used to power small electronic devices such as computers and consumer electronics.
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