why we are using DC supply for all protection relays, why cant we use AC supply..???

1 Answers  

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What are the tests to be taken on a transformer and generator?

12 Answers   Honeywell,

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where does 22kv line starts

0 Answers   Eskom,

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primery try cell?

0 Answers  

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what is the principle of tubelight ??? what is the function of starter and choke ???

1 Answers  

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What is the value of specific gravity in charged lead acid batteries.

11 Answers  

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avr is an automayic voltage regulator ... it regulates voltage before it synchronise with grid after synchronisation it regulates power factor why....

7 Answers  

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Why are calling lagging power factor is a inductive load?

2 Answers  

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can v use earth as nutral. yes than y.if not y.

3 Answers  

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what is the function of conservater in transformer

3 Answers  

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In india the power supply is always in multiple of 11, eg.220 V, 440 V... what is the reason?

11 Answers   BSES, Electrical, L&T, PSIT,

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why is  use the star and delta connection and difference

1 Answers  

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