what is DAR test?

2 Answers   Al-Naboodah, ISRO, ONGC,

---

What happen when ct secondary are open circuited? why same thing is not happen in ordinary transformer?

3 Answers   BARC,

---

can we use breather in a SEALED power or distribution transfomer instead of injecting nitrogen.

1 Answers  

---

How to calculate KW saving for power factor correction from 0.92 to 0.98 at 350KW load?

5 Answers   Heidelberge Cement,

---

why the altrnator(AVR) not showing the any voltage after making the new winding and insulation?

1 Answers   Avon,

---

In a house wiring why we are using only one neutral wire and so many phase wires from the main board, when the load is common for both wires?

3 Answers  

---

the single phase voltage is 230 volts and threee phase is 430 v.why three phase is not 660 v?

2 Answers  

---

Why AC & DC capacitor are use in UPS ??????????????????

0 Answers   Sanghi,

---

house wiring - series wiring or parallel wiring

4 Answers  

---

What is FM 200?

2 Answers   Dalkia,

---

What is the disadvantage in proportional controller?

0 Answers  

---

what is the use of interposed & reverse voltage transformer

2 Answers   Anjani Steels,

---