Answer Posted / karthik
it is nothing but battery back-up.this will gives the supply
while the power is off.it converts AC to DC using rectifiers
and DC is converted to AC using invertors
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
What is a signal flow graph?
design of IGBT firing circuit for 11KV
if 12v battery get discharged for 2 months after if we put charge it will charge again?how much time it will take to charge?
What is mean by hot and cold loop testing? What is the difference between them?
If rotor works in clock wise what happens
It is desired to flood light the front of a building 42 meters wide and 16 meters hig.Projectors of 30 degree beam spread and 1000 watt lamps giving 20 lumen/watt are availabl.If the desired level of illumination is 75 lumen/m and show a suitable scheme.Assume the cofficient of utilization, deprecitation factor and waste light factor are 0.4, 13 and 1.2 respectively.
What will happened if the neutral of secondary of Xformer ( Star point) Note it's above KVA rated Xformer
how external lighting design? please give examples?
I need the recommended size for a 3 phase transformer at 13.8 KV Primary and connected loads of 3000 kVA at 4200 volts and 2375 kVA @ 480 volts AC.
What is time response of the control system?
Its possible to use 3core 2R of 240 sq.mm cable for 3phases & separely 50sq.mm 3core cable fully for Neutral for connection of PCC to MCC 3ph..4wire system?
what is the safe meggar values for motor, transformer HT, LT and Cables? IF we want to replace I/C bay at our 220 kv substation which is of 140 mw load capacity bay to be replaced by 400 mw capacity bay.other than CT(1200/1) what are the other equipment i have to replace. why we generally use 3.5 core cable or in other word 1/2 core for neutral and also confirm me that in balance conditiob(3 phase)current in neutral will zero
How to prepare electrical preventive maintenance plan & shedule of machine tools in manufacturing unit.
Why does the adjacent zone of protection overlap?
how to flameproof electrical motor on the shaft?