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Question
What is the min.& max distance between two earth spikes is 
required for measuring earth resistance of an earth pit? Is 
the manufacturer of Earth tester decides this? Pls explain.
 Question Submitted By :: Sree
I also faced this Question!!     Rank Answer Posted By  
 
  Re: What is the min.& max distance between two earth spikes is required for measuring earth resistance of an earth pit? Is the manufacturer of Earth tester decides this? Pls explain.
Answer
# 1
the minimum and maximum distances are 5 and 10 meter in
practice. But in general manufacturer declares the distance
requirement.
 
Is This Answer Correct ?    11 Yes 1 No
Prem Devkota
 
  Re: What is the min.& max distance between two earth spikes is required for measuring earth resistance of an earth pit? Is the manufacturer of Earth tester decides this? Pls explain.
Answer
# 2
The minimum and Maximum distance is zero. And manufacturer does not decide anything. 
Is This Answer Correct ?    1 Yes 1 No
Elizabeth
 
 
 

 
 
 
Other Electrical Engineering Interview Questions
 
  Question Asked @ Answers
 
what is the earthing condition between earth & phase. ABB 2
what is the difference between energy efficient and high efficiency motors   2
what is percentage impedance of transformer? explain its significance Bosch 2
Can we use droop CT in neutral in place of W phase of alternator ?   2
Is there a chance for a motor speed to become negative..?? What is the reason for such a phenomenon.? In that case does the motor works as a generator..???   1
How can calculate ups battery back up time?   18
If the generator will trip, what you will do as an electrical technician in charge.   1
What type of isolation transformer used in UPS's?? It's Star-Delata Or Delata-Star????Why it is used???? Emerson 6
we all know that both the generator and motor are electromechanical conversion devices.....then why we rate motor in kw and generator in kva???? KSEB 3
What is meant by field loss in a DC motor?   1
why the generating / transmitting voltage is in the order of multiples of 11(ie 11kv,22kv,33kv......)   1
please explian how may types of maintenance works. HP 4
 
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