what is derating factor in Cable ? how we minimise this?

18 Answers   Bhel, College School Exams Tests,

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in cvt,there are two windings,1a,1n and 2a,2n.in my one project i use only one winding i.e.1a,1n. the other winding is not in use, so i connect it in open delta and want to close it by ibsertibg thermal resistor. the output of cvt is 132kv/115/sqrt3. plesae tell me exact value of resistor, so i may close it to avoid the resonance phenomenin. send me answer on this email adress please. aetcon-po@aetcon.com

0 Answers  

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why Induction Generators are not "Black start" ? and apart from WTGs where this types of generator are generally used?

0 Answers  

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What is the function of neutral CT in transformer? Turn ratio of typical CT for 2MVA transformer ? or relation between full load current of transformer and neutral CT ?

1 Answers   Electrical Inspectorate,

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Why r use in the tap changing x' mer.

2 Answers   L&T,

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Why we use startor to the motor?

5 Answers   Bhel,

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Why breakers not synchronized when the synchroscope is going in the anticlockwise direction?

2 Answers  

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we convert 66kv to 33kv then 33kv to 11kv,11kv to 440v.why not we convert directly from 66kv to440v?

7 Answers   HCL, L&T,

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why in India it is maintained for exactly 50HZ frequency, why it is not that 49Hz,why it is so?

2 Answers  

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if the armature current in a dc generator is ac ( sinusoidal ) why doesnt the sjhape af armature mmf a sinusoidal (ni) ? armature mmf in case of a dc machine is triangular.

0 Answers  

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what is unbalanced rotating magnetic field?

1 Answers  

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can transformer work on dc or not?if we increase the inductance of transformer can it happen to work on dc?

1 Answers  

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