why CERAMIC material is used in insulators??

1 Answers  

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what is difference between single phase and three phase.

2 Answers   Birla,

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how we can varying the speed of dc motor ?

6 Answers  

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what is the minimum winding resistance of 30hp compressor, to run or to switch on

0 Answers  

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in battery charging room we find two fuses (one in positive other in negative cables ).why it is so?one fuse is ore than sufficient?

0 Answers  

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Difference between drift current and diffusion current?

0 Answers  

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What is system earthing?what are the types?

1 Answers   ABB,

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why we are using DC violtage for testing of cables....which is used in HV AC applicatons...

1 Answers  

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how calculate external illumintion in a compound area. for e.g. there is one open park having 600m2 area and i have to put 40w flouresent tube fitting with pole. how shall i calculate the numbers of fitting.

1 Answers  

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what is the difference between single phase, 2 phase, and 3 phase in electric meter?

1 Answers  

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Why the tank of transformer is made rectangular not circular??

9 Answers  

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if any body have question paper of railway (section engineering),then plz send me .i will thank of him/her.

0 Answers  

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