As such there is no any standard of earth resistance value,
Its varies on different type of soil resistivity. Idley it
should be 0, but in different kinds of soil for electrical
equipment it should be better to below 10 Ohms and for
electronic equipment it should be better to below 5 ohms.
Please Help Members By Posting Answers For Below Questions
why in a swquence network representation, the negetive
sequence generated voltage is taken as zero?
In Indian Household, generally we receive 220V AC single phase supply. But AC has 2 phases, +ve & -ve. So in +ve half cycle current is flowing...so what happens in the -ve half cycle?? Please illustrate.
if there is nutral in phase why we use earthing wire and
grounding? even at fault condition the fault current flows
to neutral (it is a lower path)
Can we use BS 6651 and BS EN 62305 standards for computer
room lightning ptotection in substation?
What is the main purpose of c.f.b.c.boiler
If we increases the %impedance of Transformer then price of
Transformer will increases or decreases.
11 kV line deraction check by an Engineer.
In motors how many types of cooling systems were used?
Why does the speed regulating system adopting I controller
have no steady-state error? In this single closed-loop
speed regulating system, when the input of the I controller
Un=0, what is the output voltage of the regulator? What
factors do the output voltage depend on?
HI SIR, AM PREPARING FOR RRB FOR SECTION ENGINEER POST.
PLZ SEND ME THE PREVIOUS QUESTION PAPERS AND HELP ME.
I HAVE NO ENOUGH TIME MY EXAM DATE IS 22ND JUNE....
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from generating station If 400v LT line length is 1000m how
much voltage is drop and how do i calculate it? which cable
will be use for this line?
What is the accepted limit to increase the choosen
transformer capacity over the load and why ?
hi plz send me reliance placement papers..i.e electrical
technical papers that have been asked in reliance test.
what is the meaning of WYE and DELTA in Electric meter?
ELECTRICAL DRIVES: can a motor load system with passive
load torque can have equilibrium speed in second quadrant