220-1002 · Question #26
Which of the following devices provides protection against brownouts?
The correct answer is A. battery backup. A brownout is a sustained reduction in voltage (as opposed to a complete outage). A battery backup-more precisely an Uninterruptible Power Supply (UPS) with Automatic Voltage Regulation (AVR)-detects the voltage drop and switches to battery power to deliver clean, stable…
Question
Which of the following devices provides protection against brownouts?
Options
- Abattery backup
- Bsurge suppressor
- Crack grounding
- Dline conditioner
How the community answered
(54 responses)- A91% (49)
- B2% (1)
- C6% (3)
- D2% (1)
Explanation
A brownout is a sustained reduction in voltage (as opposed to a complete outage). A battery backup-more precisely an Uninterruptible Power Supply (UPS) with Automatic Voltage Regulation (AVR)-detects the voltage drop and switches to battery power to deliver clean, stable voltage to connected devices. A surge suppressor (B) only protects against voltage spikes. Rack grounding (C) addresses static discharge and safety grounding. A line conditioner (D) can smooth minor fluctuations but does not provide the backup power necessary to sustain a device through a significant brownout.
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