what is the prinsiple of dc motor and construction and working ,application of dc motor.

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For R-L or R-C ckt,time constant formula is L/R and RC respectively and its unit is in sec.Pls tell me the derivation

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what will happen if one of the phases from a 3-phase motor is disconnected?? stop/run at 2/3rd speed or run at same speed????

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Please explain how to do 'tan-delta test' on AC generator? and where i get clear and brief detail, give any web page address.

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what is meant by surge? what we called for high currents?

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why we somewhere use ryb phase sequance, somewhere use uvw, and somewhere abc??

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If one tertiary phase i.e. R,Y or B is earthed of a loaded type tertiary delta connected (Without load)of a power auto transformer, what is its advantage/disadvantage?

0 Answers   Amara Raja,

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what is the Space heater? why using in Electrical motor?

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What does the term supermesh means?

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what type of transformer used in soft ware parks its distribution or power transformer. like 1800 kva

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DC transmission

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How grounding is different than earthings?

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