What is the difference between online ups and offline ups?

Answer Posted / martin

Online UPS is the one which gives output all the time from
battery whether there is power failure or power on. You
get backing from battery all the time.

Offline UPS supplies Mains to the output when power supply
is regular and charges batteries as well at the same time.
When power fails it switches those batteries to produce
output for power backup.

Is This Answer Correct ?    157 Yes 29 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

I have experienced electrical maintenance HT ,but I completed be ECE ....can I apply c license or not ???? Pls help me friend s...

1069


Dg pf .71 i am improve pf 0.80 what capacitor connected in dg how?

1237


what is the main parts of transformer? how it is functioning? pls giv the ans briefly.

1447


What are the commonly used schemes for the bus zone protection?

538


What is stepper motor?

715






At what speed an electric car can run with 2 HP motor of weighing 400 kg?

1302


any one can explain what is the size of pvc,armoured, various sizes of powr cable dia?

1437


send me any model test paper of clerical post of state bank of india.......

1372


I have 4 busbar of 1000 ampere. we use 4 busbar to make 4000 ampere in one phase.my problem is that when we applied 60% load on that then busbar produced high noise.what is the reason of that and how can i minimize that noise.

1282


pls,send the previous year written test questions.

1441


How can I model an open-delta ground transformer for a network supplied by 4 unit GTG and power transformer in ETAP?

13285


What is turn ratio of a transformer?

657


Why it is possible to use PWM with a STATCOM and not with a conventional TCR based SVC

1567


HAI SENT HPCL APTITUDE QUESTION PAPER, MY EMAIL ID IS angus_eee04@rediffmail.com,angus_eee04@yahoo.com

1699


What are the types of control system?

622