Answer / skj

Star-Delta/Delta-star is prefered so that delta eliminates Zero sequence current and harmonics.

How to calculate Battery back up time for a 400 AH Battery bank having a load of 20 Amps and charging time required to fully charge this battery bank?

2 Answers  

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what is mean by PID & Principal of working

6 Answers  

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What is LSIG ?

6 Answers   Apollo Power,

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Explain the advantages of the wheatstone bridge method of measuring resistance?

7 Answers  

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Difference between ac parallel circuit and ac series circuit?

0 Answers  

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We have three 33kv substations. All of them energised by same source.When i am checking the phase sequence between one substation to other substation (like R Phase to R Phase) by multimeter i am getting some voltage.Near to LT panels UPS panels are there. Can u explain whether any possible to happen like that. In Phase SEquencemeter is showing correctly in both substations. How is it happen. Explain me.Explain me communication signal will produce Phase difference on this case.

3 Answers  

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Explain what is electric traction?

0 Answers  

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galloping in transmission line is due to

2 Answers   DVC,

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what is efficient load of transformer in percentage

4 Answers  

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1.Difference between vcb and Acb and partes. 2.Difference between STS and ATS.

2 Answers  

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If the supply voltage is same (say 440V) whether a system designed for 60 Hz frequency will work with 50 Hz frequency or not , if so pl. give clarification.

11 Answers   ABB,

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if our load is 65000 watts howcan we find out all char like cable size. mcccb etc

3 Answers  

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