why the earth pin is thicker than other pins in a plug? If it is for reducing resistance, then why the copper earth wire is not so thick as earth pin of socket?

5 Answers   Omax,

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Why it is necessary to isolate fire fighting when you are taking shutdown for lv board.

0 Answers   KSEB, L&T, Siemens,

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can we amplify dc signals.how can it be done

4 Answers  

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Why TAP changer provided in primary side of HT transformer ? and why not in secondary?

9 Answers   ABB, Reliance,

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Why we use stones in switchyard?

3 Answers   Havells, L&T,

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How many speed of dg start motor for engine starting time

1 Answers  

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0 Answers   ABB,

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What is the multiplying factor if line ct ratio is 1000/1 and meter ct ratio is -/5 ?

1 Answers  

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What is Grounding? any difference b\w earthing? if yes plz explan??

3 Answers   ABB,

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what happens when back charging of transformer is done for longer period

1 Answers  

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what is MEMS and any one of it applications?

1 Answers  

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how encoder works?

1 Answers   ITC Infotech,

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