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Which type of UPS also known as standby UPS or line preferred?

Which type of UPS also known as standby UPS or line preferred? Correct Answer Offline UPS

An offline UPS is also known as standby UPS or backup UPS and supplies emergency power when mains AC fail. The capacity of an offline UPS is generally below 1 kVA.

A very common application is with PC. In the event of sudden load shedding the offline UPS supplies emergency power to the PC so that work can be continued till normal power is restored or the PC can be safely switched off.

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