when ac current flows thru d coil of a contactr,it energizes,magnetic field attracts d contact of the coil...nw wont dt ac current in d contct induce current back on to d coil thru mutual inductance leading to high currnt in d coil

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dear all, can any body explain that how to select an induction motor for a specific mechanical load(inertia). is there any formula or calculation then please give me. i shell be very thankful to all of you. Thank,s and Rgard,s.

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What is the difference between RCD & RCCB, Where it can be used

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Is it required to do earthing in 2nd shop if earthed armoured cable is laid from 1st shop ?

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How do apply electrical 'c'license......pls advice

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why tertiary winding is used in transformer with diagram?

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features of hbc fuses

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for leading power factor penalty by SEB why

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in Contactor opearation Why there is a difference in the values of the operate and release voltage in case AC supply

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what is mean by hvdc transmission technology .what is principle of hvdc transmission and technic of hvddc transmission .

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Hi,Any one has idea regarding the KPTCL Recuirtments for AE'e & JE's for the year of 2009-10???Kindly help in regards..

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ro plant grundfos bm30type pump.we start the pump using siemens 3rw 4423-1bc44, 30kw soft starter. bur its failier frequently. so we planed to change the dol starter. sp please tell me any budy its possible or not翿შ†

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