how step up transformer step up the voltage and what is the reason behind it?

3 Answers  

---

what is the change over switch ,switch disconnector ,bypass switch and switch disconnector fuse unit?

1 Answers  

---

why magnet has north and south poles only why not east and west and why we are considering as north and south poles? why cant we consider as east and west?

0 Answers  

---

please send me latest & previous years question papers for IOCL Technical level questions

0 Answers  

---

on a three-winding transformer relationship delta-delta-star, on third winding why the relationship is a star? what are the advantages and disadvantages? Thank you and please help

0 Answers  

---

If we impress a dc voltage of 230 V on an unloaded 230 V, 50 Hz transformer it wi A give high secondary voltage B burn out C give secondary voltage as per K D none of these

1 Answers  

---

how single phase preventer works ?

0 Answers  

---

Please give me the formula stating relation between AC & Dc.

2 Answers   JP Group,

---

1.What is the proper definition of power system stability? 2.some times a blue spark is visible in the secondary side of a distribution transformer at the contact position of bushings and fuse wire,why?

1 Answers  

---

What is GD2(kg-m2) for Sq. cage ind. motor?

2 Answers   ABC, Essar, MMM,

---

Pleasd Tell Me..... In Generating Stations Why The Generation Of ELECTRICITY Is In 3 Phase Form?? OR In Generating Station Why We Generates The ELECTRICITY In The 3 Phase?? Why Not In The 4 Phase, 5 Phase Or 6 Phase Form??

3 Answers  

---

Why electric sock occur to human or any lives ?

2 Answers  

---