what is the earthing condition between earth & neutral.

6 Answers   ABB,

---

What Should be the rating of transformer used in 33KV substation?

3 Answers  

---

what is difference between ac1 and ac3 contactor and why it is needed to be selected?

1 Answers  

---

which one is more costly:single phase induction motor or 3 phase induction motor??give proper reasons..

1 Answers  

---

while buying 30 kva on line ups for 1 phase ouput, we ave to calculate the number of batteries for 2 hours back up? how to calculate the ah rating and number of batteries

1 Answers  

---

kva/kvr

2 Answers  

---

In order that work may be done:(a) Two wires are necessary(b) The circuit must have a switch(c) Coal must be burnt(d) A supply of energy is required

1 Answers  

---

In parallel operation time both NGR’s close or not close if both close what will happen

0 Answers  

---

why on axial hitting up of air blast on hydrogen produced in oil circuit breaker,temperature rises of the core of the arc?

0 Answers  

---

I'm looking for a mnaual set for a Teradyne J750. Softcopy would be preferred but I'll take what I can get.

0 Answers  

---

Why only plate(copper) Earth pit given for neutral earthing? why not pipe(G.I) Earth pit?

1 Answers  

---

we specify current in case of feeder but in case of distributor voltage, why?

0 Answers  

---