Answer / mahendran

KVA=ROOT3*V*I/1000

I=KVA*1000/ROOT3*V

25*1000/1.732*420

I =34.6

SAME FOR ALL

Answer / nobz

for 25kva,i=25000/440=56.8A
similarly you can calculate for any rated kva.

WHAT IS NORMAL VECTOR GROUP USED FOR DESIGNING OF TRANSFORMERS??

0 Answers  

---

WHAT IS EDDY CURRENT LOSSES AND SKIN EFFECT LOSSES IN ELECTRICAL ENGINEERING

1 Answers   GAS,

---

is it necessary to earth the rmu before cutting off the transformer winding?if yes why?

0 Answers  

---

kindly arrange to send me RRB Bangalore previous question paper for JE/Electrical and JE/Signal I am going to write exam on 2010

2 Answers  

---

What is Vk and Imag i.e Knee point voltage & Magnetising Current? How to calculate above values? How to define accuracy class 5P10?

7 Answers   Deccan Cements, Doosan, Torrent Power, Transco,

---

Can a 5 core cable one end with a 32A 3p+N+E plug and the other end 32A 3p+E be used on a generator?

1 Answers  

---

what is the use of Antipumping in HT breakers.

9 Answers  

---

what is the purpose for open delta connection in potential transformer

2 Answers  

---

Why IGBT is very popular nowadays?

3 Answers   TVS,

---

how to calculate voltage drop in long distance cable? for an e.g lamp of 12 volt ac ,300watt is 90 meter away from supply i.e (x'mer 230 v / 12v)and i m getting 8 volts at lamp terminal ....

1 Answers  

---

What sort of protection scheme do you suggest for the protection of a 10 HP motor?

1 Answers   Chevron,

---

what is the difference between Miniature circuit breaker & motor control circuit breaker ?

4 Answers  

---