Answer / rajkumar

because any one of the earth probelem anothher one connected to gnd

why root three is used and how its comes in three phase power system?

1 Answers   IEEE,

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How to control motor gearbox speed and friquency? If length of cable and dia given, how to measure the voltage drop?

0 Answers  

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How many current ratings of MCB's are in the market? e.g: 1A, 2A, .......upto.

4 Answers  

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Which Kind of machines(in terms of poles) give the smoothest DC

0 Answers  

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WHY CURRENT DECREASES WHEN VOLTAGE IS INCREASED IN A CURRENT TRANSFORMER ?

5 Answers   Sterling Wilson,

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What is the reasonable voltage between Neutral & Earth of an electrical system for good earthing?

6 Answers   HAL,

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Dear sir, How to calculate 3.5 core pvc aluminium armoured cable meter wise carrying amps rating.Please give the solution with a good example.

0 Answers   Modi Builders,

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I have 150/1A Rating CT Suppose if i inject 15A in CT " Secondary" means what will happen ??????

1 Answers  

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L.A. (Lightening Arrester) is located at a place from where transmission line enters the transmitting substation. So L.A. (Lightening Arrester) is the first equipments which has to encounter with lightening, high voltage surges and switching surges. It has to absorb energy of lightening, high voltage surges, and switching surges. L.A. (Lightening Arrester) is made up of layers of semiconductors. If these layers can not tolerate energy released by lightening, high voltage surges, and switching surges the L.A. (Lightening Arrester) blasts.

0 Answers  

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How to calculate earth flat size for 250 Kva DG and transformer?

8 Answers   Deepak Fertilisers,

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the single phase voltage is 230 volts and threee phase is 430 v.why three phase is not 660 v?

2 Answers  

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why no load voltage is greater than full load voltage?

1 Answers  

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