Interested to Buy Any Domain ? << Click Here >> for more details...
HOW TO CALCULATE UPS BATTERY BACKUP TIME
- 3 Answers
- 37854 Views
- HSBC, VRVS, I also Faced
- E-Mail Answers
Answer Posted / k.prakashchandra
Energy stored in a battery = AH x V watthour.Multiplying
with number of batteries you get total energy stored in watt
hour.Divide this by load in watt to get the backup time in
hours ,ignoring efficiency,losses and residual stored energy.
| Is This Answer Correct ? | 14 Yes | 2 No |
Post New Answer View All Answers
In a 3 phase 4-wire system. For a 3.5 core cable if all loads are single phase and balanced, what will be neutral current? will it be sum of all phase currents? Or it will be zero? And if loads are unbalanced what will be neutral current?
The synchronous machine excitation system explain
Is there any specialised book to refer about fault level calculation both in MV and LV side??
EXPLIAN THE IMPORTANCE OF POLY PHASE CIRCUIT.
can we find the inductance of a induction motor?
is the value of inductance depends upon the value of thitha in doubly excited machine??
There are different classes of protections in power plants.class a,b,c are clear..is there any class d and e r there..and elaborate class b protection.
In CTs tan delta point should be earthed , what is the reason behind it?
10 tube light connect in mcb breaker.one tube light is fault.so breaker is tribe.how fault is rectified.(using 3wire phase,earth,neutral)
An ISP is granted a block of addresses starting with 150.80.0.0/16. The ISP wants to distribute these blocks to 2600 customers as follows. a) 200 medium size businesses; each needs 16 addresses b) 400 small businesses; each needs 8 addresses c) 2000 households; each needs 4 addresses Design the subblocks and give the slash notation for each subblock. Find out how many addresses are still available after these allocations.
Name the test signals used in control system
how brushed dc motor operating ?
What are the basic & Majour problems in UPS ?
1.what is the difference between ct and cvt? 2.what is the difference between pt and cvt? 3.what is the difference between relays and circuit breakers?
WHY IS THE EARTH FAULT CURRENT ALWAYS LESS THAN THE NORMAL CURRENT??
