Answer Posted / rekha

1mega ohm

what is V.L.F. testing of power cable? do you know the voltage ratings, like for what rating and size of cable what rating of V.L.F. testing is used?

2356

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why we testing the core balance of the transformer before comissioning?

2172

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Define liftable weight of a transformer? Does the total weight of transformer include oil weight?

2495

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What is the lower limit of break-down voltage of converter transformer.

1916

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why impedance relay is used for medium transmission line protection

2335

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ult of expression 'document.FrmQF.myem

2084

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delta motor winding resistance I take normally single winding is 2.5, which value is came delta connection ie RY ?

2004

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Transformer cores are laminated in order to A simplify its construction B minimize eddy current loss C reduce cost D reduce hysterisis loss

3280

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What is value of earth resistance required for substation and equipment earthing and what are the reference guidelines

1803

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IN induction motor pf is increased using capacitors.what will be the effect on motor and system when very large capacitor is accidently installed and pf goes leading.

2149

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Give the topology of current amplifier with current shunt feedback?

1216

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distribution is maximum done by a)radial b)network c) parallel d)b & c

1951

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explain with diagram how to protect transformers and substations from over current with help of CT's?

1959

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How can we measure earthing resistance test (Earth meggar) of Transformer neutral pit while in live condition?.

2144

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I want to know Electrical Circuit?

2169

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