Answer Posted / sandhya

lightining arrestor gives low impedence path for the over voltages at time of lightning strokes.....where as wave trap is used to give the high impendence path for the carrier frequency signal....

how to do the ductor test?

7070

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Refernce currents are to be generated using refernce cueernts how can this be done

2270

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how can calculation ate Amps for cabel. Ex-for 1sqmm wire hou many amps we can draw

2462

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Give idea about General Engineering. From which book i can study this topic. Pl. reply me via email. My email is ravi@bhelhwr.co.in, also give the name of book/website, from where i can prepare it.

2057

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What is the phase relationship between the primary and secondary voltages of a transformer?

1095

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for 100 HP Induction motor service factor is 1.2(SF) we placed a VFD at the motor side load is balance with 0.3 Amp's Phase to Phase but at incoming of VFD load is un-balance with 10 to 20 Amp's what will be cause of load un balance

1951

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what are the dimensions for 200 kva transformer plinth (plateform),in which pcc m20 is used..

11714

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Mention the disadvantages of low power factor? How can it be improved?

1159

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Z transform is use when system is not a) converges b) diverges

1683

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What is earth system using on the floater TN-S or TT. Iam not sure and what ICCP

1735

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WHAT KIND OF LIGHTENING PROTECTION SCHEMS CAN BE ADOPTED FOR THE FLAT ROOF OF BIG DIMENSION.

2128

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What is shunt voltage and u v voltage witch one best

1730

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What is self exciting?

1704

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What is the approximate value of stacking factor?

1163

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how does it help for selection of a transformer.

1862

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