Answer / k.prakashchandra

Fill the earth pit with dry saw dust with bottom resting on
an insulated block

Answer / sanjay d. dabli

Look this is tricky question because earth has resistance from 0 ohms to 10 ohms.This means if we make earth pit we get resistance between 0 to 10 ohms. We can get 1000 ohms resistance between two earth pit by providing 1000 ohm resistance between them.

any idea abt REVERSE METERING concept.........?

0 Answers  

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what is the difference between Resin Cast CT and Oil cooled CT?

1 Answers  

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how to calculate restraing current and operating current for differential protection if 20 mva transformer is OLTC 33 kv/11 kv ? and what should be the type and ratio of CT?

2 Answers   L&T, OPS,

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we hav seen in electric engine of trains only 1 wired slidng conecctn is there frm ovrhead line,howevr to complete a ckt in dc postv n negtv two conection has to b there...so where is tht negative is been connectd or where it is grounded...?

5 Answers   ABB,

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why we avoid parallel operation of diesl generator?

4 Answers  

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what is IP 55 & IP 54 ?

1 Answers  

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What is the function of under voltage release ?

0 Answers  

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What is the role of power pack in substation protection system?

0 Answers   Facor,

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what is the difference between control transformer and Potential transformer (PT)?

1 Answers  

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why transformers are sometimes kept on concrete benches..?

2 Answers  

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can any one provide me a connection wiring diagram for a DG set control panel along with BOM?

0 Answers   Omaxe,

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please tell me when we start motor without load in star or delta connection whose current above condition,pl write formula

0 Answers   Foxconn,

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