what is the difference between ac and dc?which one is more efficient?and what r their advantages

1 Answers  

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what is Fault level? why it is calculated? how will u decide same for our plant?

0 Answers  

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I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

0 Answers  

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What is the megger value for ht

16 Answers   Electrical,

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why any inductive load need free wheeling diode?

4 Answers   Essar,

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hai every bodi please let me know the test procedure for lightning arresters.

2 Answers  

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last week we did the REF relay test by closing single pole (R phase) of CB and apply 380V at the primary of delta transformer. we get 33A at the primary of the R phase star end. but we get 380A at both R an B in delta side. how and why?

1 Answers   Siemens,

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which is more dangerous AC\DC supply

3 Answers  

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Explain few advantages of electric traction system?

0 Answers  

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What are stable systems?

0 Answers  

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If the (Motor control center)Panel work on field the relay used in panel in the case this will be damage and no indication provide on panel.fault occur in panel and MCB will not trip. how happen the relay damage in panel and what effect of panel.

1 Answers  

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What is the HVDC Transmission System? What are the conditions applicable to lay an HVDC Line?

0 Answers  

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