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..

Tell me all plants load factors i.e which plant operating on which load?

0 Answers   Bhel,

---

What the main causes of transient interruptions on Over-Head Distribution Lines?

0 Answers   Orion Laboratories,

---

what is the job description of a LOW CURRENT ELECTRCIAL ENGINEER in a industry?

1 Answers   BTAT, Powercraft, Prince Glass, Sterling,

---

If my sfu is 64 Amp & its link is 32 Amp then at what amp.my sfu will trip???

2 Answers  

---

Keywords: Die, Card, Coin, B/N 2 To 12

0 Answers   TCS,

---

Is VVVFD reduced the starting current of an induction motor?

1 Answers  

---

when generator of a power plant is not connected to grid , by increasing the mechanical torque speed of rotor increases but when it's connected to load instead of increase in speed current increases , why?

1 Answers  

---

PAC and simple Ac different

0 Answers  

---

hw to calculate flc of motor ? data are:3-phase,50Hz,30kw

6 Answers   BRG, Reliance,

---

What is the technical name of minute currents that i have been produced in moving electrical objects?

2 Answers   ITC Infotech,

---

What is cable gland,why does use for?

5 Answers   ABB,

---

what is post close & pre close of trip circuit supervision relay in circuit breaker control scheme?

2 Answers   ABB, NEK, Power,

---