ALLInterview.com :: Home Page            
 Advertise your Business Here     
Browse  |   Placement Papers  |   Company  |   Code Snippets  |   Certifications  |   Visa Questions
Post Question  |   Post Answer  |   My Panel  |   Search  |   Articles  |   Topics  |   ERRORS new
   Refer this Site  Refer This Site to Your Friends  Site Map  Bookmark this Site  Set it as your HomePage  Contact Us     Login  |  Sign Up                      
Google
   
 
Categories >> Engineering >> Electrical Engineering
 
 


 

 
 Civil Engineering interview questions  Civil Engineering Interview Questions (3130)
 Mechanical Engineering interview questions  Mechanical Engineering Interview Questions (3300)
 Electrical Engineering interview questions  Electrical Engineering Interview Questions (13442)
 Electronics Communications interview questions  Electronics Communications Interview Questions (2386)
 Chemical Engineering interview questions  Chemical Engineering Interview Questions (420)
 Aeronautical Engineering interview questions  Aeronautical Engineering Interview Questions (77)
 Bio Engineering interview questions  Bio Engineering Interview Questions (17)
 Metallurgy interview questions  Metallurgy Interview Questions (80)
 Industrial Engineering interview questions  Industrial Engineering Interview Questions (165)
 Instrumentation interview questions  Instrumentation Interview Questions (2402)
 Automobile Engineering interview questions  Automobile Engineering Interview Questions (107)
 Mechatronics Engineering interview questions  Mechatronics Engineering Interview Questions (38)
 Marine Engineering interview questions  Marine Engineering Interview Questions (45)
 Power Plant Engineering interview questions  Power Plant Engineering Interview Questions (80)
 Engineering AllOther interview questions  Engineering AllOther Interview Questions (1204)
Question
Why used in layer by layer charcoal and salt used in earth 
pits.
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
The layer of charcoal and salt helps to maintain low
resistance for earth fault currents.Because of ionic
behaviour of salt and charcoal they will maintain moisture
content around the earht pit.
 
Is This Answer Correct ?    48 Yes 4 No
Rajesh Tokalapudi
 
Answer
# 2
its because Salts are ionic compounds composed of cations
(positively charged ions) and anions (negative ions) so
that the product is electrically neutral (without a net
charge), and these are the electro-chemical properties that
make them suitable for buffering of electricity from the
copper rod to earth's soil, they work best when they are
dissolved in water becouse that is when the ions are
produced.The layer of charcoal and salt helps to maintain
low
resistance for earth fault currents.Because of ionic
behaviour of salt and charcoal they will maintain moisture
content around the earht pit.
 
Is This Answer Correct ?    18 Yes 2 No
Vijay
 
 
 
Answer
# 3
its because Salts are ionic compounds composed of cations
(positively charged ions) and anions (negative ions) so
that the product is electrically neutral (without a net
charge), and these are the electro-chemical properties that
make them suitable for buffering of electricity from the
copper rod to earth's soil, they work best when they are
dissolved in water becouse that is when the ions are
produced.
 
Is This Answer Correct ?    19 Yes 9 No
Michael Thindiu
 
Answer
# 4
because charcoal is a good conductor of electricity and also
charcoal and salt helps to maintain the low resistance path
for fault current.
 
Is This Answer Correct ?    12 Yes 6 No
Nimish
 
Answer
# 5
charcoal is maitain the low resistance and high
conductivity.
salt is desolved in water the possitive ions abserved by
charcoal and released so the earth resistance maintain
properly.
 
Is This Answer Correct ?    8 Yes 2 No
Srinivas Dharani
 
Answer
# 6
by usage of charcoal and salt in earthing we can reduce the
resistance and also it will give moisture content for a long
time.so it early discharges the faulty current into earth.
 
Is This Answer Correct ?    4 Yes 0 No
A.y.naidu
 
Answer
# 7
Charcoal is porous - locks in moisture that salt attracts
and dissolves in - ionised solution is kept on large
reaction area that charcoal pores provide. Such locked in
material is prevented from drying up easily.
 
Is This Answer Correct ?    3 Yes 0 No
James
 

 
 
 
Other Electrical Engineering Interview Questions
 
  Question Asked @ Answers
 
what is corona   2
Difference between mcband isolator   1
what is the pressure of vacuum circuit breaker   2
3) How earthing is done? How it measured? Write the method for earthing? How the earth resistance is kept low? Innovative-Energy 1
We know flow of electron is current . But why electron flow from negative to positive and current from positive to negative? Power-Grid 4
what are the main problems that happen in an emergency light and how to fix them ?   2
How the oil level of the Buchholz Relay come down.   3
what sq.mm copper pvc wire need for ac load current 25amps for 230v ? Siemens 4
What is the deference between earth fault & earth leakage   1
I want to apply for ONGC recruitment 2012 .I am BE Electrical but it is mentioned that to apply for this post you have to have Electrical supervisor certificate .so please tell me from where can i get such certificate ???   1
why we cannot apply ohms law to transformer?   3
we want install 11KV generator to supply power 12km far from the power house.Load to be fed is 1MW.which conductor should we use and wat will be transmission line losses?   1
 
For more Electrical Engineering Interview Questions Click Here 
 
 
 
 
 


   
Copyright Policy  |  Terms of Service  |  Articles  |  Site Map  |  RSS Site Map  |  Contact Us
   
Copyright 2013  ALLInterview.com.  All Rights Reserved.

ALLInterview.com   ::  KalAajKal.com