Answer / madhusudhan

A neutral point is a junction of Three phases in Star
distribution circuit. this neutral should be earthed to
maintain high potential difference between neutral and
phase. when ever there is an unbalanced load distribution in
three phase circuit a emf will flow from one phase to
another phase through this neutral point. due to this
voltage in neutral the the Potential dofference between
phase to neutral gets reduced. so to maintain 0 voltage at
neutral point, neutral has to be earthed to the earth pit.

Answer / siva

neutral is the return path iof current , 3 phase neutral is
taken from junction point (star connection) its like
closing circuit for the load in earth is connected toneutral
in case fault is occur its go through the earth. fix the
earth bit rod in the ground connect to neutral

Answer / masoom raza

neutral is reference from where phase voltage is
measured also it serve the purpose of return path
in three phase.it is possible in Y connection .in
delta it is virtual.while earth is always at O
potential.

it is used reduce the shock hazards in equipment.

earthing is done by connecting the equipment with earth using conductor.
there is no as such method.

there is 3 methods of neutral grounding(not earthing)
1.solidly ground
2.RNS
3.INS

Answer / kapil pareta m.b.m engg clg

neutral is common junction point of star connection of distribution ..........it is most have some specific place.
earth is mean that our device if have create some leakage current that earth wire is transfer the voltage/current in earth......

How much ph is maintained of water electrolyte which is used in LRS for 1200 kw slipring induction motor ?

0 Answers   AMS, JK Lakshmi Cement,

---

Where we give genset o/p in home & industrial applications ?

1 Answers  

---

How do we measure earth fault current in Generator Transformer(20/420kv),Station Transformer(20/11 kv) and Unit Transformers(20/11kv) for our plant system, since these don't have any Neutral earth Fault relay connected to their Neutral Earth? But for Unit Service transformers(11/.433 Kv) we have an Earth Fault Relay connected to its neutral earth.Why is such so?

1 Answers   NTPC,

---

what is thyristor, how is it works

1 Answers   Sony,

---

how circuit breaker work.. what is the operations taking place inside a circuit breaker when an overcurrent occurs... is it similar to fuse?

0 Answers   LTT,

---

1.What is wind span ,wight span and normal span, and what is the difference for 132kv transmission .

1 Answers   PKR,

---

what is the difference between the megger and multimeter operation ?

3 Answers  

---

when the direction of a 3phase induction motor is reversed , is there any losses increases?

5 Answers   IOCL,

---

how can we detect that which is receiving side and which is sendind end of a trnasmmison line by just seiing it?i.e its which end is coming from genertaing and distribution side?

5 Answers  

---

what is upper impedance and lower impedance of a distance relay

0 Answers  

---

DESCRIBE THE CONSTRUCTION ANDOPERATION OF BELT CONVEYORS AND SCR CONVEYORS , DRAW NEAT SKETCHES

0 Answers  

---

Sir, I have applied for the of Assistant.engineer of NPDCL. please send me all AP TRANSCO AND JENCO solved papers of previous exams . I requested send me the papers to my id as soon as possible (rajanikanth_peddi@yahoo.co.in) (This is very urgent) Thank You,

0 Answers   APTransco,

---