how to select a air/vacuum circuit breaker.is there any thumb rule???

1 Answers  

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How to calcluate the current by means wires/cables in square mm

2 Answers  

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what is meant by trip circuit supervision & directional or non directional over current ?

1 Answers   ABB,

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where we use zero sequence current transformer or core balancing ct.

2 Answers  

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type of transformer

3 Answers  

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If 100 KAV USP dedicated earth got disconnect / Cut. What will happen at load.

0 Answers  

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what is diff. between earthing grid,earthing mess, earting grid?

0 Answers   Century Rayon, Emco, Tailor Solution,

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IN WHICH MODE THE TRANSFORMER WILL GET A MAXIMUM OUT PUT VOLTAGE. ASKED FOR POWER GRID EXAMINATION STAT-STAR,STAR-DELTA,DELTA-STAR,DELTA-DELTA

3 Answers  

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why we use star and delta connection?why we donot give the supply directly?

12 Answers   Hitech, Siemens, Tata Steel Limited,

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sir please send me previous year questions of jspl through which i could prepare myself fpr the test.

64 Answers   FGH, HFT, Jindal, Jindal Steel and Power, JSP, JSW, Lin Engineering,

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what r the tests on the 3 phase transformers can any one explain how to test using megger on transformers thx

2 Answers  

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what is conductor copnstant of ab cable

0 Answers  

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