why double earthing is required for welding machine &
electrical tools.
Answer Posted / bilal mir
Double earthing is
used to give
minimum
resistance to the
flow of whole
current of the
apparatus in case
of short circuit or
leakage or any
such other fault.
| Is This Answer Correct ? | 26 Yes | 3 No |
Post New Answer View All Answers
When we use 3 terminal resistor?
What is time invariant system?
What do you understand by oldham's coupling ?
Earth has zero potential then what would be the neutral potential ?
In case of HV test on medium voltage cables, BS is asking for 4 U0 where as IEC is asking for 3.5 U0. Can any one advise me how this 3.5 times or 4 times U0 is derived?
what is protection class current transformer.
What happens if the negative to earth voltage is greater than positive to earth voltage in the battery of substation?
which type of motor is used in automatic swing gate
how to calculate current and voltage in a same circuit?
What are the different types of hydro schemes?
how to revers the direction of single phase motor
how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?
in wind mill use 2100 kw asychronous generator ( induction generator ) rotor voltage : 3300,stator voltage : 690, rpm : 1511 type : MRL063E04 ' we check rotor resistance magger value found following. R-EARTH - 00 M.OHM,Y-EARTH-34 M.OHM,B-EARTH- 33M.OHM R-Y: 31 M.OHM, Y-B: 00 M.OHM,B-R :33 M.OHM HOW CAN I TAKE DECISION?pls ans. quickly
what is maxemo work permit procedure
at what rate the micro controller increment its timer....is it 1micro seconds or 1/(12*10^6) seconds