Answer / ramkumar

Earth pit resistance must be less than 1 ohm then only we
have to get good earthing

Answer / pradhyumn

Should be less than unity.

Answer / neelakandan

earth pit value is not constant it's very from soil and
it's value less than unity

Answer / bhatt

For important installations such as Sub station and data
centre, it should be less than 1 Ohm. It can be upto 5 ohm
for residential aplication.

Answer / shimran

less then 1 mean 0.10 to o.2 ohm

Answer / koti

for Individual pit; no specific fig ( in general max of 5 ohm)by standards but grid should be less than 1 ohm.

Answer / g narayanarao

It should be less than 1ohm in case of switch yards and It
should be less than 2ohms for industrial applications and
for other demostic applications it should be less than 5ohms

what is relation between voltage and current and don't take resistance here. if we supose say when there is increase in voltage whwt happens to current?is it decrease or increase?

4 Answers  

Don't you have similar question banks related to Oral Certification Examination conducted by Mercantile Marine Departments / Directorate of Shipping, Ministry of Shipping for Electro Technical Officer?

0 Answers   Bernhard Schulte Shipmanagement,

why do the alternator doesnt have open circuited windings in armature???

1 Answers  

5MVA TRANSFORMER SUDDENLY FAIL WITH THE PRV TRIPPING AND LARGE AMOUNT OF OIL SPREAD OUT? SO IT CAME BACK WITH THE REPAIRING WITH REASON THAT IT FAILS BCOZ OF TRANSIENT EFFECT? SO PLZ EXPLAIN HOW DOES IT HAPPENED?

1 Answers  

How can we calculate earth mat conductor size ..? & give the formula to determine earth conductor size?

3 Answers  

Tell me the reason of connecting domestic t/f primary in star or delta,and also secondary side.

0 Answers  

write a program that prints prime numbers from 1-20 in digonal form

0 Answers  

describe the A.C. Generator Testing procedure

0 Answers  

why neutral and earth should not be connected on 3 phase 440v/50c/s supply at consumer side. where as on 25kv/ac/50c/s railway traction substation neutral and earth will be connected and track at substation. and track will act as neutral and earth. Reasons for this is needed urgently

4 Answers  

full form of electrical?

0 Answers   CEAT,

I had applied for JE in PSEB, Can you pls send me the Question bank for related to my field

0 Answers  

actual rated capacity of a disc insulator??

5 Answers   OPTCL,