Answer / romeovictoriano

Arranging batteries in series is to configure the required
voltage. After configured the required voltage by series
connections a parallel connections of the series connected
batteries is arranged to a limit that it will not induce
overcurrent to UPS System, otherwise it will cause
overcurrent and damaging UPS System.

Answer / k.prakashchandra

back up time depends on storage in batteries =VxAH.In
series voltages add up and in paralllel AHs add up

What is dynamo?How it works and what is the function of dynamo in a DG.

3 Answers   Amrapali,

---

if field current decreases how can the speed increase in the unloaded dc series motor

1 Answers  

---

Can we use Motor protection CB while we use the VFD for Speed control?? if not means please tell the reason!!!

1 Answers  

---

What we change frequency from transformer. yes or no

3 Answers   Intas,

---

1.why should we connect the measuring instruments in l.v side in short circuit test of a transformer? 2.why the power factor is less in open circuit test of a transformer?

0 Answers  

---

Why transformer rating in KVA? describe.

5 Answers  

---

if an alternator or turbine using fuel to produce ele energy and we didn't connect load to the ends then where was gone the ele energy

2 Answers  

---

i have 500 amp inductive load of motors ,,,pleas tell me how can i calculate for capacitor bank for improving my power factor to 99 .....calcullations for capacitor bank,,,,

0 Answers  

---

What is true sine wave or pure sine wave inverter?? Is it sine wave or step wave?? If it is step wave, waves with how much step is considered as pure sine wave? Is it possible to produce pure sinewave using power electronics?

0 Answers  

---

why in some cases the receiving end voltage is higher than the sending end voltage in transmission line (called 'Ferranti effect') ????? whts the reason behind tht???

3 Answers  

---

The simple way of finding the leakage quantity and % in compressed air distribution system

0 Answers  

---

Why transformer used in UPS??

0 Answers   JLL,

---