what are the differences between 'exhaust fan', 'heavy-duty
exhaust fan' & 'super heavy duty exhaust fan'.
what are their power ratings ?
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phase colour is indicated by R Y B (red yellow blue) but in transformer i have seen U V W instead of (R Y B) have any meaning of this
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what is meaning of Power factor?????????
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on a three-winding transformer relationship delta-delta-star, on third winding why the relationship is a star? what are the advantages and disadvantages? Thank you and please help
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what is the advantages og idmt relay over magnetic relay??
Why we use the D-curve MCBs in critical power distrubution.
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