Answer / arun r

its block High frequency signal in to swith yard for eg PLCC communication use high freq ,high freq signal sent to other ss upto wave trap 

why we use star connection on the primary side of a transformer?

5 Answers   DRDO, TCE,

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some basic standard questions on transformer.

0 Answers   United Engineering,

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1.how many earth pits are required for 1000 k.w plant include substion , transformer ? 2. how many earth pits are required for 500kva generator.what is formula to calcute?

0 Answers  

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Can we use HRC fuse inplace of semi conductor fuse ? What are difference between them?

3 Answers  

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what is the difference between electrical & electronics

245 Answers   Axon Constructions, Banking, GDA Technologies, Infosys, MBA, Satyam, Satyam Tech, Snow White, TCS,

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what is the major difference between dc generator and synchronous generator?

4 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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why magnetising curve not start with zero voltage?

0 Answers   TATA,

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what is saturation in transformer

9 Answers   Essar,

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If the generator will trip, what you will do as an electrical technician in charge.

1 Answers  

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how much load 15kva dg set can bear.with full explination and how to calculate?

2 Answers  

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Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient?

1 Answers  

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