Answer / technical1210

MCCB are avaliable in 4 types. One,two, three and four
poles. These can be used between 25 A to 1600 A as per need.

Answer / sri

32A to 630A

can u guys pls suggest a good material for learning abt switch yard and its components

2 Answers  

---

what the effect will occur if we increase the airgap in induction motor

3 Answers   ONGC,

---

transformers? power factor? machiences?

3 Answers  

---

how to minimize earth resistance upto 2Ω, if the resistance is 6 Ω ?

0 Answers  

---

in transmission line 11kv is step up or step down? why?

5 Answers  

---

---

what is the meaning of Ring Mean Unit in a substation or trasformer also tell me its oerpuse?

4 Answers   NPTC, NTPC,

---

How short circuit MVA(Fault MVA) in a power system calculated for calculating number of earth plates ?

0 Answers   NA,

---

electricity requires a medium to flow and it cannot flow through air. so how does lightning come to earth through air without any medium?

3 Answers  

---

what is residual current....

1 Answers  

---

I have a transformer whose primary operates at 230V, 50Hz for which the secondary voltage will be 12V, 50Hz. What will be the secondary voltage if the primary is fed with 400V, 8KHZ Signal?

6 Answers   ABB,

---

What is burden of a current transformer. What is function of core in Transformer

1 Answers   Jindal Steel and Power, NCC,

---

What is reactive power?

7 Answers   Suzlon,

---