When do you use a VFD motor?

3 Answers  

---

In step down transformer (415/200V),mistakenly secondary side is connected to 415V for some hours, what would be result of this condition?

19 Answers   Essar, GAIL, Vizag Steel,

---

In synchronization circuit what is the function of Interposing voltage transformer(IVT)and Reverse voltage transformer(RVT)

0 Answers   ABB,

---

what is allowed value of zero sequence impedancce of 6.6 kv nuetral earthing transformer ?what is the actual value

0 Answers  

---

how is the connection of a 3 phase ct trivector meter done on a pole mounted transformer

0 Answers  

---

can transformer work on dc or not?if we increase the inductance of transformer can it happen to work on dc?

1 Answers  

---

how to calculate Transformer loss?

1 Answers  

---

HI SIR, AM PREPARING FOR RRB FOR SECTION ENGINEER POST. PLZ SEND ME THE PREVIOUS QUESTION PAPERS AND HELP ME. I HAVE NO ENOUGH TIME MY EXAM DATE IS 22ND JUNE.... MY EMAIL ID IS nalla.amarnath@gmail.com

0 Answers  

---

In MEP Services what are parts of STP and what are there function?

0 Answers   Tenon,

---

there are 3 transformers each of 1500 kva and one transformer of 1000kva for a 11 floor building . total otgoing kw is 4066 kw. i need an extra 260 kw .is there any provision for that? what is the max kw that can be connected with these transformers?

2 Answers  

---

why it is necessary to short and ground of a current transformer secondary side?

6 Answers   Ambuja,

---

What is the difference between emf, voltage drop and potential difference?

4 Answers  

---