Answer / nilkanth tailor

In old technology UPS, thier is transformer used to step
down the voltage and givet to that circuit..coz at that
time we have no power equipment like ( IGBT, MOSFET,
BJT)..But now by using IGBT or MOSFET, we can make ups
without any transformer..in modern UPS thier is no need for
any transformer..so we can reduce the size of UPS by using
this power device./..

Answer / aravind

use toroid transformer or pin type transformer it consume
low space compared to normal transformer..

DESCRIBE THE CONSTRUCTION ANDOPERATION OF BELT CONVEYORS AND SCR CONVEYORS , DRAW NEAT SKETCHES

0 Answers  

---

why our power production in multiple of 11, in strictlly asking why our o/p voltage of alternators is 11kv only and whynot graterthan 15 and016KV?

4 Answers  

---

what is high tension ? specify the range?

3 Answers  

---

Hy the hydro power stations have high transmission and Distribution costs?

3 Answers  

---

why can't we provide dc supply to a transformer?

2 Answers  

---

plz tell me in detail about c.t. and p.t. ?

3 Answers   Reliance, SCL,

---

What is burden of ct,explain very simple

2 Answers   KSEB,

---

What is the difference between neutral and ground?

3 Answers   Cethar Limited, Torrent Power,

---

out of all machines which have highest efficiency and why?

2 Answers  

---

Earth leakage relay basic knowledge principle

0 Answers   Radiant,

---

how many types are their in switchyard or substation(like D,I TYPE), what is differant between them

0 Answers  

---

A single line diagram(SLD) and a purchase order of a 11/66kV switchyard of a power plant was given. In the SLD, only one lightning arrestor(LA) was shown, but the purchase order had need of 3 LAs. Is this correct, if yes, why?

2 Answers  

---