Answer / aamirali

Neutral voltage is zero, when the fault occours it becomes
equal to phase voltage.

Answer / guru

The Voltage Unbalance in the 3 phases create a floating
voltage which reflects in the neutral.( Sometime it will be
equal to phase voltage itself). That is why neutral in the
secondary side of the transformer is always grounded and it
is not connected to the main earthing grid. By Making a
seperate earthing for neutral avoids the unnecessary earth
fault tripping in the circuit

Answer / raj kushwaha

If star connection than Neutral voltage is zero in normal
circuit. But if unbalance load than Neutral currant can not
be zero.

Dear all i want to know FEWA Electrical Supervisor Licence test Previous Year Questions ? If any body know please send to me shibin_75@yahoo.com

1 Answers   FEWA,

---

what is dead tank CT AND what is live tank CT

2 Answers   TATA,

---

why we use core type and shell type transformers?

2 Answers  

---

what is the chemical name and formula of refrigarent R-134a.

0 Answers   Blue Star,

---

how can get electrical c licence.now i am working in spining mill , transformer capacity 2750KVA. SANCTION DEMAND 2250KVA. PLEASE ADVISE ME . MY CONTACT NO 09944226823

0 Answers  

---

what is a drive ?

3 Answers  

---

what is the effect of leading power factor on Power transformers in existing in major power utility

2 Answers  

---

why we setting 95 deg and 105 deg in wti and oti of distibution transformer ? give the reson for that ?

0 Answers  

---

what is non uniform load

1 Answers  

---

How can get C license i am complete I.T.I electrician trade and 10 years experiance this field and i complete the dee from ksou by distance mode of this year.ksou means karnataka south open university but i want Tnelb license

2 Answers   C License,

---

In a star-star connected h.t transformer why we use NGR on the secondary (l.t)side.

3 Answers   Star, TATA,

---

Why we are checking the vector group & turn ratio of Xformer while PM?

1 Answers  

---