How to take the Vector Group Test in Transformer? What is the purpose of doing Vector Group Test?

2 Answers  

---

Is 3 phase induction motor can work as a generator?? if so why & how??

2 Answers   Jindal,

---

Why P.F(power factor)relay should not be connected to the D.G(diesel generator) incomer side

1 Answers   ABB, Corsa,

---

what is the basis for selection of Protection CT class ? How anyone can decide whether to go for 5P10 or 5P20 ?

3 Answers  

---

Is there a possibility to use such a treshold voltage for the NMOS part of a CMOS circuit that during the switching it will start conducting only after the PMOS part will be already closed, by this eliminating the leakedge current? Please note, I'm not asking about the well bias in standby mode, but about the "antileakedge" measures during normal operation.

0 Answers  

---

---

To measure insulation resistance of 11KV cable between core & armour, what should be the test voltage & duration?

4 Answers  

---

what is the difference between VARIAC,AUTO TRANSFORMER,DIMMERSTAT.

10 Answers  

---

how electronic energy meter works?

12 Answers  

---

When capacitor bank connect on line. It's draw some current but it's current not increase of main line ammeter. Why?

1 Answers   MCL, Star Wire,

---

At light load transformer efficiency is less because A secondary output is low B transformer losses are high C fixed loss is high compared to output D copper loss is small

1 Answers  

---

State kirchoff current law?

0 Answers  

---

The Howland current source produces a A Unidirectional floating load current B Bidirectional single-ended load current C Unidirectional single-ended load current D Bidirectional floating load current

0 Answers  

---