Do you know how to measure the earth resistance?

Categories >> Engineering >> Electrical Engineering
Suggest New Category

Question Posted / virendra ku mallah

7 Answers
15602 Views
Manhattan, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

Do you know how to measure the earth resistance?..

Answer / zahid ali

Dear Friend
the R = Pl/A is not used to measure earth resistance. is is
used to measure conductor resistance.
to measure earth resistance. We need an DC power source,
Ampere meter & volt meter & the formula R = V/I
The earth resistance testers are available in market, they
are been used by three leads on connected to the test
object & Current & Potentional probes are conneceted 20 &
10 meters away from object under test.

Is This Answer Correct ?

20 Yes

1 No

Do you know how to measure the earth resistance?..

Answer / ullas

using two methods:
1.fall of potential method
2.earth tester(device)

factors affecting earth resistance are
1. Shape & material of the earth electrode.
2. Depth of the electrode at which they r burried in soil.
3. Specific resistance of the soil surrounding the electrode

(Specific resistance of the soil varies depending on
moisture content in the soil..... varies from 80*10^3ohm-m
to 80*10^6ohm-m)

Is This Answer Correct ?

18 Yes

2 No

Do you know how to measure the earth resistance?..

Answer / ashok mishra

by earth tester

Is This Answer Correct ?

2 Yes

1 No

Do you know how to measure the earth resistance?..

Answer / sandesh

To find the earth resistance we basically need to do the
resistivity test of soil which is symbolized by rho.Now as
per IS we need to have mutual earth resistance below 1 ohm.
so to find the earth resistance for different type of
earthing i.e. plate and pipe we need this resistivity which
vary place to place. for a detailed derivation for both
earthing method and calculation for resistance by one
earthing please refer IS 3043

Is This Answer Correct ?

0 Yes

1 No

Do you know how to measure the earth resistance?..

Answer / niranajn

Bu meggar

Is This Answer Correct ?

5 Yes

13 No

Do you know how to measure the earth resistance?..

Answer / sanjeet

earth resitanse is also measured by meggar

Is This Answer Correct ?

5 Yes

18 No

Do you know how to measure the earth resistance?..

Answer / sumit garg

to mesure the earth resistance we need to find a specipic
constant of the earth soul.
so by using a formula.

R=P(L/A) Ohm
where,
p = Secific gravity constant
L = lenth of Earth
A = Area of Earth.

Is This Answer Correct ?

1 Yes

30 No

Post New Answer

More Electrical Engineering Interview Questions

in shunt clippers why a resistor is used in sereis with the input

0 Answers

What is a advantage of Self Reset Lockout ? On Fault breaker get trip & fault no longer exist then self reset lockout how inform us?

0 Answers Bhad Engineers,

What are the different types of dams?

0 Answers

how to calculate the cable size depending on the amps?

1 Answers Polycab,

what is meant by magnetic flow meter ? explain its working principle ?

1 Answers

What is the most essential condition for the voltage build up for a d.c. Shunt generator?

0 Answers

2 hp motar how many amps taken please show me the formula

4 Answers Cable Wireless,

why we are using KVA rating for transformer,not KWh rating?

5 Answers NTS,

Power Factor Controller

1 Answers

what is the diff of mcb and mccb

2 Answers NSN, Sterling Wilson,

how the transmission voltage ranges are decided like 11kV,33kV,66kV,132kV,220kV,400kV,725kV.... why not choose the transmission line voltage as 23kV,164kV,440kV?? what's the reason??

3 Answers

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

0 Answers

For more Electrical Engineering Interview Questions Click Here