The power backup device, UPS, stands for:

Correct option is A

The correct full form of UPS is Uninterruptible Power Supply. It is an electrical device that provides emergency power to a load when the main power source fails. A UPS ensures an uninterrupted supply of electricity to computers and other critical devices, preventing data loss and hardware damage caused by sudden power outages or voltage fluctuations. It bridges the power gap until the main power is restored or a generator takes over, ensuring system stability and safety.
Important Key Points:
1. Definition: A UPS is a backup power device that instantly supplies power when the main power fails.
2. Working Principle: It stores electrical energy in batteries and provides it through an inverter when power cuts occur.
3. Types of UPS:
· Offline/Standby UPS
· Line-Interactive UPS
· Online UPS
4. Applications: Commonly used in computers, servers, hospitals, data centers and telecommunication systems.
5. Advantages: Protects devices from power interruptions, voltage fluctuations, and surge damages.
Knowledge Booster:
· (b) Uninterruptible Power System: Sounds similar but is incorrect; the correct term ends with Supply, not System.
· (c) Under-control Power System: Has no relevance to electrical backup or UPS technology.
· (d) Under-controlled Power Supply: Incorrect and non-standard terminology in electrical or electronic systems.
· UPS devices are essential in ensuring smooth shutdowns during power failures and preventing data corruption, especially in IT infrastructure.