what is the resistance value of earthing pit and why they
are connected?

Answer Posted / pradeep kumar dhar

The resistance value varies according to the nature of the
soil.It is very high for rocky soils.A value of 1 ohm or
less is considered to be very good.Several pits are
interconnected to reduce the value of earth resistance.

Is This Answer Correct ?    20 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Difference between rating factor of cable and derating factor of cable?

1186


what is dry and wet frequency withstand voltage? why & where it is used??

1776


cc of scorpio?

1781


what is the practical application of full adder circuit?

1414


mccb service sittings be done?

1421






1. If 8.35%Z means the percentage impedance of 132kV-line from power company, we will like to confirm its base capacity?

1541


is there any lightning by passer is arranged in ship like buildings?

1472


How relay works, reverse relay, master relay, os relay, earth fault relay and what is its setting point

1200


why can the rotor of 3 phase slip ring induction motor not be a 2 phase rotor?

1562


What is non-minimum phase transfer function?

640


RESPECCTED SIR/MADAM- I AM PRERING FOR SECTION ENGINEER (ELECTRICAL) RRB CHANDIGARH PLEASE SEND ME SOME PREVIOUS YEAR QUESTION PAPER OR MODEL PAPER.MY EXAM IS ON (30- NOVEMBER 2008).I AM VERY THANKFUL TO YOU. FROM- HARENDRA SINGH YADAV

1612


Disadventage of cable-gland earthing if any ?

1662


11 kv input, 66 kv input advantages

930


Name of the relay of low lub oil presuure in DG sets

1596


How will you define capacitance?

700