Answer Posted / k.prakashchandra

40 KV (min) for below 72.5 KV class

we have earthmat at 110KV substation.we would like to take earth resistance.b some says that by connecting earth megger terminals (C1,P1) at middile point of earthmat (at riser) will cause voltage gradient at other earthmat nods and dont get exat earth resistance.when connecting at end nods will get exat value . is it correct .please explain

2171

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what is efficient motors and how it is different from normal induction motors

1862

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how we can decide that what value of ht line will come to any commercial building? (ans except According to the building load)

1597

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Define gain margin?

1126

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Briefly describe means used by electricity suppliers to influence the flow of active and reactive power in power networks (one for each type)?

1902

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bus bar design conditions and sizing pls tell me quickly

1854

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what are the things that can cause a three phase motor to crawl?

3473

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how to calculate the tarriff for an industry whose kva demand is 10 mva

1923

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it is in our knowledge tht right plug of supply of residential suppy system is phase n other is neutral...howevr the battery charger of mobile works in both ways...i mean it is not restricted in only one direction.ny of the holder of charger can hav phase .so y is it not lik tht phase of supply must b connected 2 phase of charger...?

1956

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List advantges of active filter over passive filter?

1050

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Define phase lag and phase lead?

1076

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at what rate the micro controller increment its timer....is it 1micro seconds or 1/(12*10^6) seconds

1740

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All tape of electrical questions Answers tape of motor transformer e.o.t crane

2591

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How to calculate the input cable rating for 10kva ups (3phase input and single phase output and also 3phase output, battery rating 65Ah)provide the formula also.thnx

2159

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What is difference between insulating medium and fault current interruption medium in a switching device.

1591

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