1.what is surge 2.what is lightning 3.what is switching 4.difference between surge,lightning,switching used in power system 4.definition of surgearrestor,lightningarrestor 5.adv and disadv of surgearrestor,lightningarrestor 6.uses and purpose of surgearrestorand lightning arrestor 7.block dia of surge arrestor 8.blockdiagram of lightning arrestor 9.operation and working of surge arrestor and lightning arrestor 10.basic formula of surgearrestor and lightning arrestor 11.basic diagram of surge arrestor and lightning arrestor

1 Answers   Crompton Greaves, Framo, L&T,

---

What is mean by STUB protection?

0 Answers  

---

what happens to the water pump if ground water level is slowly decreasing?our water pump is varying from no-load full-load due to this problem

0 Answers  

---

How to design the NGR Resistance

0 Answers  

---

What are books to be referred for KPTCL exam?

0 Answers  

---

what is amf panel & how it is working

6 Answers   ATS,

---

Briefly describe your ideal job?

0 Answers   L&T, LPGCL, ONGC,

---

what is earthing.how we make it,describe briefly.

0 Answers   HAL,

---

What is the thumb rule for calculating the P.F correction Capacitor?? Say for 100 hp motor how much micro farad Capacitor is needed .... Thumb rule so quick answer wanted

9 Answers   Bhel, Dubai Group,

---

can I connect 25KvA stepdown transformer(RYB-440V,UVW-240V) to the output of 15KvA,3-phase online UPS(440V phase to phase)please brief.

1 Answers  

---

in a transmission line the aluminium cor is sarrounded and in between there is a another type of matrial what is that?

7 Answers  

---

could any one explain me what power factor and where it is use ful

3 Answers  

---