UPS stands for Uninterruptible Power Supply.

• A. Uninterruptible Power Supply
• B. Uninterruptible Power Source
• C. Utility Power System
• D. User Power Service

Answer: (A)

Uninterruptible Power Supply means a device that keeps equipment powered without a break when the main power fails. The word Supply fits best because the UPS’s job is to deliver power to the loads, using its internal battery and inverter to bridge any outage. It’s not the primary power source itself, nor is it describing the utility grid or a user service; those ideas are captured by other terms that aren’t standard for this device. In practice, a UPS ensures continuous operation and protects against power interruptions and quality issues for critical equipment on a site.