Answer / ssnslm

Frequency changer can step up or step down the frequency.
power converter(cycloconverter) converts (step-up or step-
down) the input supply frequency to the desired frequency
with or without voltage control. Cycloconverters are used
to power the high frequency induction furnaces in steel
industry

Batteries. What is the difference between Lead and Nickel batteries ?

0 Answers  

---

keeping in view of parallel operation which of the 3 phase transformer connection are possible? a)delta-delta to delta-star b) delta-delta to star-delta c) star-star to delta-delta d) delta-star to star-delta

4 Answers   Ecil, Siemens,

---

in wind mill use 2100 kw asychronous generator ( induction generator ) rotor voltage : 3300,stator voltage : 690, rpm : 1511 type : MRL063E04 ' we check rotor resistance magger value found following. R-EARTH - 00 M.OHM,Y-EARTH-34 M.OHM,B-EARTH- 33M.OHM R-Y: 31 M.OHM, Y-B: 00 M.OHM,B-R :33 M.OHM HOW CAN I TAKE DECISION?pls ans. quickly

0 Answers   Shaifali Rolls,

---

Why winding temperature ct placed in B-Phase of the transformers?? 

3 Answers  

---

What is oil temprature with A/T contacts in Transformer ?

1 Answers  

---

what are the interview question asked in wind mill about electrical

0 Answers  

---

which motor will u use in refinaries?

1 Answers   IOCL,

---

what is RTD? what is THERMOCOUPLE? What is difference between it?

2 Answers   Bhel,

---

How to select a transformer group to connect a 0,433 KV generation with 33 KV grid in bi directional flow of current

0 Answers  

---

What is mean by vector group? For what purposes we doing vector group test in transformers?

2 Answers  

---

Can Superposition theorem be applied to AC Circuits?Can Thevenin's Theorem be applied to AC Circuit too?

6 Answers   HCL, NPCIL, Shivam, Vast,

---

whycircuit breaker is not connected at the generator end where the capacity of the generator is more say 60MW, 100MW etc.

2 Answers   Adani, Adani Power,

---