What is working principal of V.C.B., O.C.B., A.C.B & Over load relay?

4 Answers   Unitech,

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How we can calculate the Amps for the cable Ex:- For 1sqmm wire how many amps we can draw (calculation)

0 Answers   TATA,

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can i know how to design overcurrent setting and earth fault for 11kv & o.433kv system assuming tx 1000kva.

2 Answers  

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In generating stations which we generate current or voltage if it is voltage then how it will convert to current and power?

2 Answers   NIT,

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why transformers are put with supply for 24 hours before giving supplying to a locality?

2 Answers  

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what is the difference between elcb,rccb,mcb.

8 Answers   HCL, RCCB,

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what is the constructional difference between a power transformer and potentian transformer?

0 Answers   BTM,

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when voltage increases then current also increases then what is the need of over voltage relay and over current relay? can we measure over voltage and over current by measuring current only?

1 Answers  

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Is it true that in the 3 phase transformer, the limbs of the core are at 45 dgrees to each other. if true, why?

0 Answers  

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The sodium vapor lamp is not glows when it is connected a distance of 5 meters above from gearbox, why ?

0 Answers   Ispat,

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What is super thermal power plant? and how it will differ from normal thermal power plant

0 Answers   AK, Suzlon,

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What are the role of each components in PID COntroller

1 Answers   BARC,

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