Answer Posted / shahnawaz

MCCB,VCB,ACB all are of different type with same
functioning.
all of them are used to isolate the power or to trip the
power at the time of fault in line and thus save the
circuit from further damage and isolate unheathy part from
healthy one.
if the circuit if of low rating we can go ahead with MCCB
but for high rating circuit we go for costlier CB that is
ACB/VCB because they are more reliable and have long life.

how to conduct dc resistance test for rotor of an alternator and how to measure the rotor dc resistance value theoritically?

3295

---

what is reverse power relay brief explanation and in b/w where it is connected

2043

---

This is urgent!! What is a Thyristor-based 3-ways selector switch with Zero crossing control? how does it operate and where is it mostly found in a system?

2071

---

can i connect REF and Differencial relay in 1 CT core for transformer protection?

1956

---

Electrical 'C' license full abbreviation , and full form

1895

---

How to Calculate The Neutral Earth flat design calculation for the Synchronised generator (Gen 1-650Kva, Gen 2-725Kva

1653

---

Explain using drawings what is reverse PID action w.r.t PID controllers.

3454

---

How to Calculate the Fault Level of Electrical Installation

2268

---

i m in need of current rating chart of heavy duty pvc/xlpe, cu/al cables. can somebody provide me? if yes, plz send me at ashish_patel111@yahoo.com

2015

---

Hoe do calculate the Cable size for Amps rating ?

2166

---

Explain the purpose of inductor in an electric circuit?

1135

---

hi frnz,can somebody give me any project work? i am a 2nd year student & interested in practical works...plz give me some projects

1997

---

what is the size of ht cable of 33kv ht line and transformers ratings are 1 Mva and 5mva.please send formula also.

1460

---

how to calculate the size of the HT cable

1894

---

What is value of earth resistance required for substation and equipment earthing and what are the reference guidelines

1800

---