in railways why we use the power in 10,20 30kv,why not in the multiple of 11kv

2 Answers  

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What is an automatic controller?

0 Answers  

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How to know any size of cable if there are not written on cable? Answer must be theurical not by experience.

0 Answers   El Seif,

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why current transformer secondary side should be shorted ?

5 Answers   Areva,

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Why we use cosine angle for calculating power factor not in sine angle ?

4 Answers  

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What is meant by full pitched winding?

0 Answers  

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List out the different frequency domain specifications?

0 Answers  

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We store the d.c supply...then why can't we store A.c supply???

4 Answers  

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What will be the voltage impact on secondary side of two transformers with different vector groups when both voltages are compared.

0 Answers   APTransco,

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aeroline vibration is present

1 Answers   DVC,

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if a 3 phase induction stator has charactristic plate and have on winding inside.with the calculation of plate or dimenssion of core how one can desinge rewinding drawing.

0 Answers  

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why we use the fuse in only one wire? althrough in ac current the current flows in both directions. why the neutral wire can be taken half the magnitude of phase wire while same current returns from neutral wire?

2 Answers   Bhel,

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