What is the difference between online ups and offline ups?
Answer Posted / raj
In online ups inverter is always on when ac supply goes off
ups give power but in offline ups inverter always in off
condition inverter on when power goes off.
| Is This Answer Correct ? | 10 Yes | 2 No |
Post New Answer View All Answers
I have 2 KW electric water heater.I am gonna use it in controlling water temp.so I needed to increase or decrease the heating capacity.is there any electrical-electronic circuit for varying the resistance & so current?
Name of the relay of low lub oil presuure in DG sets
how to test YNyn0 vector group in transformer?
in 1-phase 230v,how in 3-phase 440v. in each phase in between 230v.
Why AC & DC capacitor are use in UPS ??????????????????
Which material is used for the core of a transformer and why?
How to calculate earth wire load by formula
How is the speed of a DC shunt motor related to the armature current?
what is the easiest method of short circuit current calculation ? pls. derive with a mathematical example in real life application.
what topics we have to concentrate for power grid et.written test.and tell what to read for english synonyms and antonyms.
how to remover corona effect and hysteresis losses from contactor
What is the principal of motor?
WHAT IS LOAD CELL
we have require a Motor (1500kW, 6.6kV, 50Hz) which shall operate at 1500rpm during 30min and after it shall run on 500rpm during 15min. The same cycle shall be repetitive during the whole working days. Which method is best and economic to achieve such type of task. VFD, VVFD, Pole changing motor etc.
why sometime we get electrical shock while touching the ballon of dish tv connection ? which we should not get.