Pls Breifly explain about UPS (Inverter,Reserve,Rectifier,Float voltage,Boost voltage).

0 Answers  

---

Please brief working principle & construction of permanent magnet AC Servo motor

0 Answers   DRJ ARDE,

---

What is the general power consumption rating of CPU CRT type and Flat type, Monitor,Printer, projector, Scanner?

0 Answers   HAL,

---

what is work of choke in tube light?

4 Answers   L&T,

---

HOW TO WRITE A QUENTION ANSWER? I MEAN SHORT OR LENGHTHY ? OR FROM THE BOOK AS BOOK..... SOME TIME WE GIVE A ANS FROM THE BOOK AS LIKE BOOK ND WE GET MINIMUM 60% MARKS OR MORE THEN....... THEN HOW TO FILL THE Q-PAPER?

0 Answers  

---

I have 12MW gas engine based power plant its running parallel with grid. my problem is When cpp run in island mode(without geb) that time geb transformer power factor is 0.2 lagging. When cpp run with parallel that time power factor is 0.94 lagging So how can i maintain power factor ofgeb transformer in island mode 0.9 lagging?

1 Answers   SPCL,

---

what is the difference between thyristor & IGBT?

2 Answers  

---

What are the advantages of speed control using thyristor?

0 Answers  

---

if we convert kw into kva,which one formula use by us,pls tell me?

19 Answers   ABB, AEC, BGH,

---

where we use the SFU & FSU?

0 Answers   L&T,

---

what is the difference between ac and electric

1 Answers  

---

last week we did the REF relay test by closing single pole (R phase) of CB and apply 380V at the primary of delta transformer. we get 33A at the primary of the R phase star end. but we get 380A at both R an B in delta side. how and why?

1 Answers   Siemens,

---