Answer / kamal narayan

1.according to structure
shall type ,Barry type ,core type transformer
2.according to phase
single phase ,three phase transformer
3 according to voltage
step up , step down transformer

why 3 phase induction motor only need starter ? why not other motors need starter ?(like synchronous motor,single phase induction motors & their types) ?

3 Answers  

---

what is mind in cable

0 Answers   BARC,

---

Why slip ring ind. motor power consumption is low compare to induction motor .same 90 kw motor used same load output

0 Answers   Altra Power,

---

1.what type of wave is produced from i.online ups ii.offline ups iii.inverter.why don't we use inverter instant of offline ups for computer,what's the reason?

2 Answers  

---

In APFC panel, Why on dealy timer is used in Capacitor controlling circuit?

1 Answers  

---

What are protection of transformer on HT side & on LT side?

4 Answers  

---

How damper winding in synchronous motor suppress Hunting?

2 Answers   Bhel,

---

formula for incomer breaker size calculation of powerfactor correction unit

3 Answers  

---

what would be the earth to neutral voltage in industries? if it is not main Taine then what will happen?

4 Answers  

---

how to select cable size for three phase?

1 Answers  

---

Why it is necessary to isolate fire fighting when you are taking shutdown for lv board.

0 Answers   KSEB, L&T, Siemens,

---

how hazordious area is classified at an oil & gas plant and categorise suitable class of electric equipment in that area like induction motors, LCS, Lighting Fixtures Fluerescent/Flood lights Mercury& sodium lights, J.Bs, Power Cables etc

2 Answers  

---