Answer / k.prakashchandra

AH of each battery X numder of batteries x voltage of each
battery = load x back up hours .AH of battery x total
voltage = stored energy which when divided by load gives
the back up period

How to test transformer

1 Answers  

---

IN SINGLE PH TRANSFORMER IF LEKAGE IMPEDANCE DROP IS NEGLECTED ,THE FLUX IN THE MAGNETIC CORE and the lekage flux linking a winding are a)proportional to the applied v to the winding i respectively.

0 Answers  

---

What is the difference between automatic & semi-automatic star-delta starters?

3 Answers  

---

what is acceptable leakage current for 33kv cable while doing high voltage test for cable? how to calaulate the leakage current for 33kv or any rated cable?

0 Answers  

---

What is the operating range of voltage and current in grid supply in India?

4 Answers   BARC,

---

what is the maximim current drawn by 1 phase and three phase welding machine

0 Answers  

---

Is it possible to connect a dYN1 transformer in parallel with a YNd11 transformer.

4 Answers  

---

WHY MOSTLY BATTERY VOLTAGE IS IN MULIPLE OF 2 LIKE 2V,4V,8V,16V,18V....

2 Answers   Exide,

---

what is the thumb rule to know current carrying capacity of copper conductors of different size.

1 Answers  

---

what is the difference between single ratio, multiple core and multiple ratio, multiple core ? please explain.

0 Answers   NTPC,

---

How to calibrate or test an LT Air Circuit breaker 440 volts, 35 KA, 800 Amps ?

0 Answers   ABB,

---

what is the difference between 'Control Transformer & Potential/Voltage Transformer'?

2 Answers  

---