What is the formula to find out cross sectional area of cable for certain current rating?

1 Answers   MRF,

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As a electrical engineer.. what are the basic norms should follow in transformer oil testing.. 1.What is the Electrode type? 2.How long time you will give for oil testing?

0 Answers   NAL,

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Types of 132KV and 222 KV protection.

1 Answers  

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what are the insulation properties.

2 Answers   Cable Wireless, MAHINDRA,

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Tan delta point in transformer to be earth or not?

1 Answers   DMRC,

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WHAT TYPES OF OIL(STRUCTURE) ARE USED IN POWER TRANSFORMER INSULATION?

4 Answers  

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The speed of a dc motor can be controlled by the variation of 1. armature voltage. 2. field current. 3. armature circuit resistance. 4. angle of brush shift. Which of the statements given above are correct? (a) 1,2 and 3 (b) 2,3 and 4 (c) 1,3 and 4 (d) 1,2 and 4

1 Answers  

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What is the need of black rock stones under the transformer yard?

5 Answers   TNEB Tamil Nadu Electricity Board,

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if negative of DC supply used and positive is grounded through EGB, and if ELCB used in the system then is it sense the positive volatge and get tripped is it possible?

0 Answers   Delta,

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description about dry type transformers

0 Answers  

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why only violet glow appears in corona effect?

1 Answers  

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Differene between KVA and KW.

6 Answers   Bharti,

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