why voltage swells and dips???

3 Answers  

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The magnitude of sum of two sinusoidal av voltage is equal to 230 volt.the magnitude of each individual voltage is also equal to 230 volt.what must be the phase difference between voltages?

0 Answers   PGVCL Paschim Gujarat Vij Company Limited,

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where does 22kv line starts

0 Answers   Eskom,

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what is different between IP55,IP54 and IP66?

2 Answers   ABB, Global Industries,

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1) Why distributiion system decided 11 kv, 33 kv, 66 kv, 132 kv, 220 kv, 400 kv, 2) In 3 Phase line terminal of capacitor, why used for power factor improvement. 3) Why used rating KVA in transformer?

1 Answers  

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Interchange 7 and 6 ,÷and× 36×7+4-7×3

1 Answers  

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WHY IN THREE PHASE CABLE 440V CURRENT FLOWS IF IN ONE PHASE 230V CURRENT FLOWS ???

3 Answers  

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In Power Line Communication (PLC) the wave trap is used to block communication signals from entering neighboring lines. My question is this: Why do they allow for different filtering arrangements on these wave traps? Isn't it always going to be a low pass filter since we want the power frequency to go through, and the comm signal blocked?

0 Answers  

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Current chopping mainly occurs in air blast circuit breaker.why?

1 Answers  

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If 110V DC Coil Contactor taken 15ma DC on load,than how much AC current wil be taken?

0 Answers   Lafarge, Shree Cement,

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can you any one give exact mathematical relation between AC current and DC current?

0 Answers  

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Explain what is electric traction?

0 Answers  

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