in HVDC transmission system ,monopolar link has one conductor usually a negative polarity and use ground or sea return ?through negative polarity we could pass electricity or not yes means how it is possible

1 Answers   Gyana, NNN,

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why 3 phase is preferred than 1 phase?

4 Answers   Infosys,

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why earth fault current is always less than the o/c

2 Answers  

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Why pmg used in electrical generators for excitation.is there any other method without pmg ?

1 Answers  

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some ac motor's direction get change dueto ghanging input to the ac drives.(say ryb to rby). but some motor direction remains the same when phase sequence is changed fromdive side. can anybody guide me?

1 Answers  

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what must be the mf for a meter with the following conditions. line ct ratio-100/1 line pt ratio- 220kv/110v meter pt ratio- 3X63.5V meter CT ratio- -/1 A

1 Answers  

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which one cable has a more resistance.A big or small

2 Answers  

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What is the material used for the core of a high freiquency transformer?

3 Answers   Videocon,

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The CHARGED BATTERY GET DISCHARGED WHEN IT IS NOT IN USE FOR LONG TIME.GIVE REASON.

1 Answers  

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How power factor of a transformer is calculated

3 Answers  

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what happen if we give 220 volts dc supply to d bulb r tube light?

9 Answers   NHPC,

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what is mean by dry frequency

0 Answers   Siemens, TCS,

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