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1KVA transformer of different frequencies of 50hz,100hz,500hz&1000hz. which one of these transformer has big size? Give reason

16 Answers   Ecil, Engineers India, MahaDiscom,

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Describe the test procedure to determine the vector group

0 Answers   MPSEB,

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in 33kv/11kv stepdown t/f why should we use Star point

2 Answers  

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What is difference between VCB and SF6 breaker

4 Answers  

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We have a 62.5 KVA DG with Leyland engine and kirloskar slipring alternator. We have earthed the neutral, and another earthing for the dg body. is it necessary to isolate the dg foundation with rubber pads?

1 Answers  

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How do we measure earth fault current in Generator Transformer(20/420kv),Station Transformer(20/11 kv) and Unit Transformers(20/11kv) for our plant system, since these don't have any Neutral earth Fault relay connected to their Neutral Earth? But for Unit Service transformers(11/.433 Kv) we have an Earth Fault Relay connected to its neutral earth.Why is such so?

1 Answers   NTPC,

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How can we calculate single phase load into three phase load

2 Answers   Jindal, Tanfac,

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What happen when change order of CT in GIS feeder?

0 Answers  

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what is the purpose of supervision relay coil

1 Answers  

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what is the different betweem earthing and neutral?

8 Answers  

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In case you don't have coal and salt for earthing, how can you achieve good temporary earthing?

1 Answers   Focus Energy, NHPC, ONGC,

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what is the difference between the diode and the rectifier

17 Answers   Avalon, L&T, Mahacol Trexim,

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