What should be the voltage between neutral and earth of a UPS?

4 Answers  

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purpose of breaker contact multiplication relay?

5 Answers   ABB,

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Difference between PLC and SCADA ? What are merits & De-merits of PLCs ? What are merits & De-merits of SCADAs ?

3 Answers   Ambuja,

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What is transposition in a transmision line?

2 Answers  

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1.What is isolators and bus bars?give answer in details

2 Answers  

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what is the difference between earthed and unearthed cable?

24 Answers   Cords Cable, Essar, Torrent Power,

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Can anyone please give me the parameters , formula needed to calculate the circuit breakers for building services.Thanks

0 Answers   Bhel,

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Give me the calculation steps to design an electromagnet to be work in 230V 50 Hz AC Supply. Also give force that is created by that electromagnet when it gets energized.

0 Answers   GE,

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hi can any body send me syllabus of rrb electrical section engg... and past pepar also of any board...

0 Answers  

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while grounding the galvenized metallic structures is it necessary to remove the galvenization at the point of contact? Or other wise is the galvenizatio a good conductor?

1 Answers  

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concept of busbar and load dispatching..?

0 Answers  

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sir, Two different rating of generator going to connect parallel, can it set same DROOP or different. Why? Please explain

2 Answers   Kirloskar,

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