Answer / ramniveth

the usual procedure for transmission is star to delta

for ex: 220KV/33KV
if they transmit 33KV then 33KV will be in star side and
vice versa

in this case say a delta is transmitted and gets an earth
fault .Zero sequence current will be flowing only in the
transformer .
fault current of phase which gets earthed with earth will
be almost zero .because no return path .
voltage becomes zero for the fault phase and the other two
healthy phases voltage gets root three times incresed which
may affect the whole system

how to convert psi into kilo pascal? what is the suction pressure & discharge pressure of chiller?

1 Answers  

---

what r the types of detectors? state the location these detectors?

3 Answers  

---

a 11 kv line is grounded and a 110 kv line is grounded. which line have the greater current flow?

4 Answers  

---

I want to know that a 160kva diesel generator contains capacity of 160kva on each phase like R=160 Y=160 B=160 total RYB=480kva or it is total capacity of all there phases like RYB=160kva ... thanks in advance ...

2 Answers   jlpl, JP Saraswat Engineers,

---

why do we use LPF wattmeter not UPF in the experiment of no load and blocked rotor test of 3phase slipring induction motor?

3 Answers   Matrix,

---

if single phase is 230 v three phase is 440 v then what about two phase?and why is it so?

2 Answers   Eicher,

---

What is the limitation of kirchoffs law?

0 Answers  

---

the site measured knee point voltage of protection class CTs should be greater than rated knee point voltage? what about meetering class CTs. Should it be below the rated knee point voltage?

0 Answers  

---

What is the comparision (advantages / disadvantages) of 110V, 60 Hz system to 230 V, 50 Hz system.

2 Answers  

---

On what basis primary and secondary of a transformer is chosen?

2 Answers  

---

how we select fuse rating for motor?

6 Answers  

---

please give some hindalco placement papers for written exam

0 Answers   Hindalco,

---