What voltage is used in Directional earth fault relay? and why?

5 Answers   L&T,

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why some time Railway Fan not Rotate,But after a small rotation by human then it rotate normally? Why?

4 Answers  

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What is resistance reading of earth copper rod with grid and without grid?

0 Answers  

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how will we calculate the copper wire load..

0 Answers  

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why AC signals are represented by sinusoidal waveform?WHY other waveforms not used for representation

4 Answers  

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where they are using surge arrester and lighting arrester? how they connect? what is the purpose of that?

1 Answers  

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Is possible to increase the voltage without using transformer? why?

9 Answers  

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how to calculate the no load current in transformer?

0 Answers  

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what is star delta starter? how it works? give its control and power diagram.

0 Answers   Bhel, Point to Point Solution, Star Wire,

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Upto what extent, the lagging power factor can be improved with the help of capacitors?

6 Answers  

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why ac supply neutral should earth not in dc (-)

2 Answers  

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when any relay trips in any ckt then what type of setting is there in motor?what is function of relay in that ckt?

3 Answers   Finolex,

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