Answer Posted / chitti2babu

yes

pre arcing time of ehv breaker

2128

---

In Indian Household, generally we receive 220V AC single phase supply. But AC has 2 phases, +ve & -ve. So in +ve half cycle current is flowing...so what happens in the -ve half cycle?? Please illustrate.

2025

---

HOE WE CAN IMPROOVE BY USE OF CAPACITOR

1960

---

plz explain the auot-reclosing circuit in electrical engineeing

2471

---

How to do bus bar short circuit calculation for 230KV/11kv, 60 MVA Substation?

4718

---

How To increase Knowledge Of boliler regarding To Only Electrical Field..

1607

---

We have two parts in generator, electrical & mechanical. how it works?

1948

---

How many gap between finger contact in a.c.b. and v.cb.?

1281

---

WHAT WOULD BE THE FORMULA OF WIRE GAUGE FOR A FULL LOAD CURRENT

2306

---

When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this<

2149

---

reason of diode failure in alternator

1851

---

Can 33kva/415v transformer be run underground? If the answer is yes why and if the answer is no why?

1578

---

1.why are not using acb 33kv ht side? is there any problem 2.what is difference between acb,vcb,sf6 breackers? 3.what is the function of invertor and convertor in ups?

2140

---

what is vA rating and class of a ct.

1857

---

What is the meaning of loop in transformer

1787

---