Answer / kumar

therotically it should be 0V. But practically differences
lies for which upper limitis are been mentioned.
For electronic systems like telecommunication it less than
5 V, for power systems less than 100V.

Secondaly , it may connected to earth depends on what
neutral you system needs i.e. fixed or floating.
Moslty it is connected to earth for safety of personal &
euipment.

Answer / jais thomas

THE EFFECTIVE VOLTAGE BETWEEN THE N AND E OF A SYSTEM
SHOULD BE ZERO WHICH MEANS THERE IS NO SHORTING,
DEFINITELY THERE WILL BE CONTINUITY BETWEEN N AND E BECAUSE
THE N THAT IS GENERATED IN A STAR SYSTEM TRANSFORMER IS
GROUNDED WHICH MEANS THAT THERE IS A CONTINUITY IN N AND
E.THIS SHORTING BETWEEN N AND E SHOULD ONLY BE IN THE
TRANSFORMER LEVEL AND NOT IN ANY OTHER PART OF THE SYSTEM

Answer / abdul salam

The exact voltage between earth and neutral can not be
forecast because it ia not a fixed quantity it depends upon
the how effective neutral earthing is provided to the
system and howmuch unbalancing of load is present in the
system, ideally it should be zero but can not be achieved
as some unbalancing is always there in the system.

There should not be any continuity between earth & neutral.

sir what is the purpose of SF6 in HT breaker and what is the pressure should be maintain in the breaker?

2 Answers   Kirloskar,

---

During speed control of dc shunt motor with flux control methode,when armature voltage is constant, How can it possible to increasing the armature current?

1 Answers  

---

how to calculate no load losses units comsumed by transformer

2 Answers   MRF,

---

Why indicated only R.Y.B to phase.

6 Answers   Bhel,

---

What will be happend if we not ground CT secondary?

3 Answers   Enercon, Engro, THDC,

---

What is Diff btw Fire Alarm & VESDA System???

0 Answers   EFY, Emerson,

---

what is difference between neutral& grounding?

6 Answers  

---

what is the safe meggar values for motor, transformer HT, LT and Cables? IF we want to replace I/C bay at our 220 kv substation which is of 140 mw load capacity bay to be replaced by 400 mw capacity bay.other than CT(1200/1) what are the other equipment i have to replace. why we generally use 3.5 core cable or in other word 1/2 core for neutral and also confirm me that in balance conditiob(3 phase)current in neutral will zero

0 Answers   Jindal,

---

WHAT HAPPEN IF TRANSFORMER HAS GIVEN SQUARE WAVE SUPPLY

3 Answers   APTransco, NTPC,

---

ful form of gis

2 Answers   ABB,

---

HOW to speed control of induction mototr using scalar control

3 Answers  

---

Draw torque - speed curve and load curve of induction motor? mark operating point ?

0 Answers  

---