How many battery required for an 3kva online ups with 3 hrs back up with usage of 3 fans,3tube lights



How many battery required for an 3kva online ups with 3 hrs back up with usage of 3 fans,3tube light..

Answer / shri...

Connected load = 3 Fan (70 watt each approx) + 3 Tube lights (40 Watt each approx)
Load = 330 Watt
Battery back up time 3 Hrs

Required minimum 12V 1 no 120 AH battery

Is This Answer Correct ?    0 Yes 0 No

Post New Answer

More Electrical Engineering Interview Questions

when a pure dc signal is sent through a moving iron meter, what will it read?? dc or rms?? when a variable dc signal is sent through a moving iron meter, what will it read?? dc or rms??

1 Answers   GATE,


What is the unit of attenuation?

0 Answers  


Why is the earth fault relay connected to the Yellow Phase?

4 Answers  


working method of railway electricl loco in single wire 25000 volt

1 Answers  


A cylindrical wire is compressed in length by 10%. The percentage decrease in the resistance will be?????

8 Answers  






Caliculate the Specific Fuel consumption of 320 kva diesel genarator set?

3 Answers   AllTech, RRB,


Difference between divercity and power factor

1 Answers  


how to decrese the PH value of liquid resistance?

2 Answers   ONGC,


how the vaccum ckt breaker workes..? how the arc is quenching in it?

1 Answers  


What is the difference between AVR and Servo Stabliser

3 Answers   Wipro,


why one side of tubelight glows after switch off ?

1 Answers  


How will you calculate the correct KWH value if your CT is 600/5 and your KWH meter is rated for 100/5

1 Answers   L&T,


Categories
  • Civil Engineering Interview Questions Civil Engineering (5085)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4451)
  • Electrical Engineering Interview Questions Electrical Engineering (16632)
  • Electronics Communications Interview Questions Electronics Communications (3918)
  • Chemical Engineering Interview Questions Chemical Engineering (1095)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (239)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (259)
  • Instrumentation Interview Questions Instrumentation (3014)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (97)
  • Marine Engineering Interview Questions Marine Engineering (124)
  • Power Plant Engineering Interview Questions Power Plant Engineering (172)
  • Textile Engineering Interview Questions Textile Engineering (575)
  • Production Engineering Interview Questions Production Engineering (25)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1379)