Answer Posted / m bhargava narayana

for 0-95% stator earth fault over voltage relay is used,where as 95-100% earth fault(because small amount of third harmonic zero phase seq currents flow through neutral induces small voltage at neutral) under voltage relay is used.

Proviiding the Dedicated N earth and individual Body Earths ,Finally these all looped /Now my Question :- will it not harm in case of Transformer Fault current flows in Dediacted N Earthing to Looped Body Earthing.

2191

---

What is the working mechanism of OLTC in Power Transformers????

4304

---

What is the use of mc( moving coil) in dc voltmeter and dc ammter and what is the use of ( moving iron)in ac voltmeter nd ac ammeter

2880

---

If oil and air can withstand a high MeV when used as an insulator in a transformer, what are the values of how high for each material?

1858

---

i want to know d working mechanism of tafe tractors next i like to know d engine type of apache bighs can anyone help me

2222

---

size of condotory fron voltage level

2202

---

what is meant by IGBT how they differ from tyristor ?

2426

---

Dear Respected sir how to test ABB REX521 protection relay by relay tester.

2729

---

In siemens PLC, why do we want to move the data ?

2305

---

Explain thin film resistors and wire-wound resistors

1004

---

in the case of 6.6kv motor starter combination contain fuses on it VCB. but in 11KV motor starter combination Fuses are not using in it's VCB why?

2256

---

Dear all i am kumaravel. now in chennai. my work is control and relay panel auto cad designing.up to 11kv to 400kv then question is i am improving my knowledge. i want some books name and auther are available for this C&R panel related. plese any one help me

1759

---

sir my exam is on 19/6/2013 under electrical branch pls send me sample aptitude questions as well as sample technical questions for jindal steel and power company

2260

---

Difference between ac parallel circuit and ac series circuit?

2094

---

Define branch?

1067

---