Correct option is D
The correct answer is (d) Uninterruptible Power Supply.
Explanation:
● UPS stands for Uninterruptible Power Supply.
● It is an electrical apparatus that provides emergency power to a load when the input power source or main power fails.
Information Booster:
● A UPS differs from an auxiliary or emergency power system or standby generator in that it provides near-instantaneous protection from input power interruptions.
● It uses energy stored in batteries.