how to calculate no. of earthing pits and their diamensions? no. of lightning arrester rods which are required to protect a building of 35 mtr and we calculate?

5 Answers   Dharampal Premchand Limited, FlowMore, Hindustan Zinc, Ispat, Maheshwary Ispat, NDDB, Siemens,

---

WHAT IS THE DIFFERANCE BETWEEN IP54 AND IP55

2 Answers  

---

Acually generator neutral is earthed,if suppose cable from neutral is brokened under theearth ,what will happen.

2 Answers   L&T,

---

Control cables in S's will carry 1000v which is AC R DC? Pls answer me 

0 Answers  

---

how can i reduce sparking without stepdowning the voltage

0 Answers  

---

defination of lines

0 Answers  

---

what is the function of 1 phase preventer?

3 Answers   ABB, Electrical,

---

Define closed loop control system.

0 Answers  

---

What is the differance between negative dc voltage and positive dc voltage because some circuit uses -24,-5,-12,- 15,volt dc supply

10 Answers   eLab, Hero Honda, NTPC, Suzlon, Teradyne,

---

What is hipot test procedure?

0 Answers   CCC,

---

What is emperical relation.Name few of them which are used in electriacl engineering?

1 Answers  

---

What is the effect of solar radiation on the design of an Isolated Phase Busduct?

0 Answers   Exide, Punj Lloyd Ltd,

---