how make megger test
for control cable like 12c x 1.5mm and what it apply voltage and test timing details.
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What sort of protection scheme do you suggest for the protection of a 10 HP motor?
Seamless tubes are made by?
why ferranti efect occurs on no load only?
how much current will be drawn by 3 phase, 415v, 50 hz, 20 ton central ac
What are the advantages and disadvantes of delta and star connections in transformers and alternators?
what do you mean by 1 ton in AC`s
36 Answers Bhel, Bosch, ITC Infotech,
when will cause the negative sequence falut in electrical system?
last week we did the REF relay test by closing single pole (R phase) of CB and apply 380V at the primary of delta transformer. we get 33A at the primary of the R phase star end. but we get 380A at both R an B in delta side. how and why?
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.
why scott connection is done why not two phases are directly picked at the output of 3 phase transformer??
why current is leading in capacitor?
In CDG type IDMTL realy O/L , E/F, O/C which are used for out going feedrs,on R-phase o/c element, Y-phase , e/f elecment and on b -phase o/c element will be connected . Why the earth fault on center phase only, why not on other two phases?