220-801 · Question #7
Which of the following provides the BEST protection from brown outs?
The correct answer is D. Uninterruptible power supply. A brownout is a reduction (sag) in supply voltage, not a complete outage. A UPS (Uninterruptible Power Supply) with voltage regulation actively conditions the incoming power, compensating for voltage drops to deliver stable output voltage to connected equipment. It also…
Question
Which of the following provides the BEST protection from brown outs?
Options
- ASurge suppressor
- BComputer power supply with built in surge protections
- CMotherboard with built-in surge protection
- DUninterruptible power supply
How the community answered
(37 responses)- A3% (1)
- C5% (2)
- D92% (34)
Explanation
A brownout is a reduction (sag) in supply voltage, not a complete outage. A UPS (Uninterruptible Power Supply) with voltage regulation actively conditions the incoming power, compensating for voltage drops to deliver stable output voltage to connected equipment. It also provides battery backup during full outages. A surge suppressor only protects against voltage spikes (over-voltage events) - it offers no protection against brownouts. Built-in surge protection on a PSU or motherboard similarly only addresses surges, not sags.
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