WHAT IS THE REASON FOR THE GROUND PIN IS BIGGER IN SIZE
COMPARING TO OTHER PINS?

Answer Posted / venu

because as the diameter increases resistance decreases wen
ever a ground fault occurs by the body short of any
equipment it creates a very low resistance path to dicharge
through it

Is This Answer Correct ?    7 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

WHat is the requirement of installing FAST ACTING EARTH SWITCH in GIS and how is that integrated with protection system. How and when does it operate?

1478


The magnitude of sum of two sinusoidal av voltage is equal to 230 volt.the magnitude of each individual voltage is also equal to 230 volt.what must be the phase difference between voltages?

1164


we have 15 ampere variyac but we want 30 ampere variyac what we do

1418


how net resistance islow in star connection and viseversa in delta connection...? if anybody could explain in detail it wud be helpful.

1124


hi pal, i am vengatesh from tamilnadu(chidambaram),i have called for the written test for the post of jr executive(ELECTRICAL) of AAI ,I dont know about the question paper pattern,so any kindly help me to face the examination,post me the model question papers and some tips to write my examination to (vengi.annadurai@gmail.com)

1431






Dear all, I just want to ask an expert on this forum for some insights. For the magnetic balance test, when applied voltage on a Delta-Star transformer e.g. Dyn11, the following relationships apply for HV side: 1.  H1-H2 = H2-H3 H3-H1 2.  H2-H3 = H3-H1 H1-H2 3.  H3-H1 = H1-H2 H2-H3 For the LV side also: 4.  X1-X0 = X2-X0 X3-X0 5.  X2-X0 = X3-X0 X1-X0 6.  X3-X0 = X1-X0 X2-X0 Is there a similar pattern for Y-d, Y-Y, D-d? And how about Y-z, D-z, Z-y transformers? I've tested a YNzn5 transformer and for LV side I don't see the pattern. In this particular case I got for LV side the following (see values below): H1-H0  H2-H0  H3-H0    X0-X1  X0-X2  X0-X3 128.0  119.9  7.2      29.2   13.3   15.8 70.7   128.4  59.2     23.4   22.0   3.6 7.2    120.1  128.1    13.4   29.3   15.8 What is the relationship here for LV? For row 1 I see the relationship, for row 3 I also see but it's shifted, but for row 2 I don't see such relationship. Any suggestions, answers, someone?

1359


Why magnetic flux produces an induced current?? what is the detailed procedure ?? ans plz

3227


how many current required for hypo test

1450


What are the advantages and disadvantages of negative feed back?

632


Which thing is maximum in RLC circuit at resonance a)power consumption b)inductive current c)capacitive voltage

1323


can indirect loading be called as phantom loading?

1553


DG Earth Value?

1860


Why we make earth connection with Transformer Body and What will be the minimum size of copper wire as per code with respect to KVA rating of Transformer?

1287


From past few months I am getting lagging pf even though sufficient capacitors used in circuit. Where is the problem pls answer

926


Can u tell me design of switch yard

1685