Question { L&T, 23288 }

What is the difference between EARTH & NEUTRAL?

Answer

earth and the neutral are two different things.

Earthing mean connecting of non current carry mettalic
parts directly to the great mass called earth.
and we found it every where.

While on the other hand

Neutral we have to create it.
for a star connection we get it from the point where all
the phases balances each other.
and for delta connection (if reqiured) we create it by
using zig-zag transformer.

Question { Essar, 29952 }

Shall we get electrical shock if we touch the positive
terminal of a 230 volt dc supply?

Answer

sorry dear frnds have u ever tried this ????????????

who tell u that u got a shock on touching a single terminal
of battery with ur hand.

it doesn't matter wether u r touching posiotve or negative
terminal.

if u r touching it one by one sepratly u wouldn't get a
shock

u get shock only in the case when one terminal of battery
is connectimg to earth and ur trying to touching the other
terminal.

Question { 17770 }

why dc supply is given to the field of alternator

Answer

for exciteing the alternator field

Question { HSL, 30726 }

How many earthings are required for commissioning the
Transformer?

Answer

1. 02 nos. body earthing
2. 02 nos. neutral earthing

Question { 54786 }

one kva is equal to how much amps?

Answer

1KVA= 1.38Amp

Question { ABB, 29714 }

which relay is used on long transmission lines

Answer

IDMT relays r used for long transmission lines protection

Question { Voltas, 3198 }

Does dry and oil transformers both require dedicated neutral, because in my project we are using 2500kv dry star delta transformer, where they say neutral not required and even it is not provided in our substation. can u let me know

Answer

Yes, We need 02 Nos. Neutral Earthing for Both DG and Transformer Sets.
Neutral Earthing are required to balanced the unbalanced current due to load variations.