what is a lightning arrester???

12 Answers   ABB, NTPC,

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what is the difference between single phase, 2 phase, and 3 phase in electric meter?

1 Answers  

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how much loading in terms of ampere can put on 5 MVA,33/11 KV TRANSFORMER having rated current 263 Amp ?????????

11 Answers   ABB,

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How to run 1ph motor(230 VOLTS its full load amps is 4.5 ampa))with 480 volts main(we didn hav neutral)Thn we go for step down transformer.Our load 10 amps,so we conisder this amps in primary are secondary side?

1 Answers  

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How is the percentage impedence of a transformer fixed at design stage???

0 Answers  

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What is the concept of voltage & current its relation?

5 Answers  

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Why is the starting current high in dc motor?

0 Answers  

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why the value of k is more in shell typr transformers?

0 Answers  

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if we look on phasor of the transformer vaoltage is 180 oppsite at primary and the secondary so to improve a power factor is secondary should kept negative to improve it primary side means is -.90 became +.90 at other side

0 Answers  

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why AC voltage source are generate as 50 Hz ?

4 Answers  

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what objective books are good for preparing for PSU's?

3 Answers   NTPC,

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What are the types of Transformer? Name them.

9 Answers   Bhel, HSL, NTPC,

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