Devices that supply power when the commercial utility power system fails are called which of the following?

Question

Options

• Apower conditioners
• Buninterruptible power supplies
• Cpower filters
• Dpower dividers

• A
  3% (1)
• B
  88% (30)
• C
  6% (2)
• D
  3% (1)

Explanation

Uninterruptible power supplies (UPS) are specifically designed to provide continuous power to connected devices when commercial utility power fails, using batteries or other energy storage to bridge the gap seamlessly.

• Power conditioners (A) regulate and clean incoming power quality (removing noise, stabilizing voltage) but do not supply power during an outage.
• Power filters (C) remove electrical interference and line noise from power, but have no energy storage and cannot operate during a failure.
• Power dividers (D) split a power or signal source among multiple outputs - they distribute power, not supply it during failures.

Memory tip: Think of "uninterruptible" literally - a UPS ensures power is never interrupted, even when the grid goes down. If the word "uninterruptible" is in the name, backup power is its entire purpose.

No community discussion yet for this question.