what is the benefit of floating our DC source? if i have two floating DC source of which 1 has a ref voltage of -21VDC and the other of -18VDC. can it be connected in parallel to share a common ref voltage? if not, how do i make both sources to be of common ref voltage? tks

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3phase 4 wire system is more reliable or 3 phase 3 wire systems?

4 Answers  

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What is the value of specific gravity in charged lead acid batteries.

11 Answers  

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how to calculate current when LT supply 415v fed to HT Motor 6.6kv and 1120kw.

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how u select control transformer for a mccb panels or any panels?for expample we hav 440 volts maim supply and control volts is 230v?

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what is the formula for efficiency of francis turbine and generator for hydropower? what is best way to select francis turbine and generator?

0 Answers   HAL,

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what is dol starter

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What it is the diff btw Package & PEC AC's????

2 Answers   Emerson,

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what is the difference between core & shell type transformer ?& where we use those transformers ?

10 Answers   BNCET,

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transmisancy eficencey calculation formula

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What are Contactors? How they works and what its highest rating?

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