Answer / alokverma

1-) polarity should be same
2) per unit impendence should be same
3)resistance/reatance ration shuold be same

how we can find out the speed of fan without using any measuring instrument

2 Answers  

---

what are the current specifications of bus ducts ? i ve seen in IPBD bth 22000 A and 1500 A in 400 kv switchyard . why it is so??

1 Answers  

---

explain the details about vaccum circut breaker and advantages?

4 Answers   CPCL, Unisol,

---

why dc series moter is not started at no load?

5 Answers   IOCL,

---

Hi, what is the temp of bus bar.

1 Answers  

---

physical identification of HT & LT panel

0 Answers   Schneider,

---

how to select electronic timer(Star-Delta) setting for diff. rating motors

0 Answers   Getrag Ford Transmissions,

---

I'm generating a pulse of 3V with frequency 80Hz (12.5ms time period) and pulse duration 0.125ms and feeding it to a transformer since i want the pulse to get amplified around 60V. At the output amplification s happening but the pulse is changed to a spike, can you tell me what could be the reason? (an ordinary transformer 220V-12V stepdown transformer is reverse connected ie. now it is 12V-220V stepup and voltage amplification happens)

0 Answers  

---

why wave traps are placed only at y and r phase?

3 Answers  

---

Greeting to all members, How to calculate spill current when we have different ratio CT and Class for REF(Low Imp) I have 500/1A 5P20 @line side n 400/1A CL.X @ Neutral.

0 Answers   DEWA,

---

how many types of cbs?with pcific ratings?

1 Answers   Bhel,

---

As per which Indian Standard induction motors are manufactured?

2 Answers  

---