what is basic difference betmeen normal & flame proof motor??

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transformers parts & function of each parts

25 Answers   Amara Raja, Bhutan Ferro Alloys Limited, Breather, Electrical, Electrical Tech, ERDA, GVK, Juniper Networks, Matrix, Mechanical, NFL, Oracle, Pyramid Plastics, RPPL, RRB, Siemens, TCS, Tulip Silk Mills,

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What is the use of centrifugal switch in 1phase induction motor? Why is it so called?

2 Answers  

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who invented active elements? plz give me the complte details of active elements...

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Where we give genset o/p in home & industrial applications ?

1 Answers  

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types of motors suitable for escalators with reason

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Sir we have 12.5 MVA(110/11KV) transformer (Y-Y) connected,which tripped showing earth fault,when we charged transformer it stood OK ,but on connecting 11 KV feeders it tripped showing earth fault.our service engineers found that the B phase and R phase phase connecting to neutral broken from HV OLTC(on load tap changer),and R phase and Neutral is ok.Dissolved gas analysis shows that accetline content is high,tan delta value is 12.My dout is it is an internal fault of transformer,why REF or diffrential relay is not acted?

1 Answers  

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IF i have switchgear with busbar current rating of 1000Amp 35kA then is it necessary to have outgoing breaker kA rating to be equal to busbar kA rating?

6 Answers   L&T,

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how to measure genset CT coil range?

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How can we Run three phase motor when only single or two phase supply is available ??

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why the emf of a cell more than the terminal voltage when the cell is delivering current?

4 Answers  

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What is the transformenr turns ratio.

5 Answers  

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