how the transformer stables out zone faults? Because we use non directional O/C relays .Is there any special considerations are taking into account to overtake this?

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What is the significance of vector grouping in Power Transformers??

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How to Preparation of online test

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Transformers with dc supply

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Can i get some examples of mechanical devices?

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which signal we found accurate reading of analog signal or degital signal and why?

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What are the neccessary safety arrangements before commissioning of HV substation?

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is there any current flows in our body?

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Dear All, In a 400V power system, ratio of three current transformers installed incoming switchgear is 4000/1. Maximum three phases short circuit current of this system is 48kA. One CT is installed on neutral of upstream transformer (6/0.42kV, solidly earthed) for 51G protection. Would you please inform me about the correct CT ratio of this current transformer (on neutral)?? Thanks a million

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what will happen to the core losses if we perform the open ckt test on high voltage side of a transformer ?

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RESPECCTED SIR/MADAM- I AM PRERING FOR SECTION ENGINEER (ELECTRICAL) RRB CHANDIGARH PLEASE SEND ME SOME PREVIOUS YEAR QUESTION PAPER OR MODEL PAPER.MY EXAM IS ON (30- NOVEMBER 2008).I AM VERY THANKFUL TO YOU. FROM- HARENDRA SINGH YADAV

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what is the cause of voltage dipp or swell in the transmission lines?

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