Do you know how to measure the earth resistance? if so
explain it

Answer Posted / dr. joshy jose

Earth resistance is mwasured by using earth resistivity
meter. It is by using four probe method. Two electrodes
for potentials and the other two for currents. There are
two methods, viz. Schlumberger method and Wenner method in
which two types of electrode assembly. There are special
formulae to calculate the resistance from the apparent
resistivity we get from the instrument. There are special
software to interpret the data.

Is This Answer Correct ?    19 Yes 21 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

i m doing DEEE in part time,can i join regular cources in BE,,IF i join what the cources can i select like (civil,ece,IT) ,,kindly advice

1633


describe the Tranformer testing procedure

1456


what is the formula of starting current of 3phase and 1 phase motor???

1713


which motor have relatively high power factor and what is reason for have high pf? 1.capacitor run motor 2.shaded pole motor 3.capacitor start motor 4.split phase motor

1474


what will happens if one phase is missing for 33/11kv power transfomer and why?

2185






why electron produce magnetic field when it is in motion?

1685


Is a direct shorth ciruit on a branch MCCB in a Low Voltage Switchboard a correct means of tesing the performance for discrimination?

1763


WHAT IS THE PARTIAL DISCHARGE TEST?

1625


Does all the output contacts (N/O as well as N/C) of a Numerical relay operate when relay receives a binary input/inputs or contacts are designated to specific logic input/inputs and only these contacts operate?

1610


What are the necessary solutions needed to be carried out on a malfunctioned earthing mechanism of a VACUUM CIRCUIT BREAKER.(TAMCO)

1529


What is the use of lag compensator?

665


explain the types of drives

1550


what is meant by k-rating in isolation transformer?what is k9, k14 stands for?

2242


why core is useful for a transformer ?and also in its operation ?

1574


How the PF control while running DG set with load

1616