Why the TNC switch is called as Memory switch
I think it is called so ,as the closed position remains in memory (( L M D ) to give ' auto trip ' indication .
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power generation unit kw/hr or kw/day ?? please answer me engr_kalam@yahoo.com
what is transformer
No load efficiency of transformer is ___________ than full load efficiency
Why do we use only Sinusoidal Wave in AC supply why not the Square,Triangle or Sawtooth etc?
why in electric train we can't feel current & generally we have get socked in our normal electricity ?
how open delta PT works & what is its construction?
Why the underground cables will Punchar? or what is the reason to burst the underground cables?
when we should use Central Battery system and UPS system and why? in other words, what are the differences between the two systems?
Why we used 690V in ACS 800 drives.Why dont use standard voltage like 415v or 1.1Kv
How many turns are there in primary winding? (In Transformer)
What will be in Mahagenco Trade Test Exam? I want to know the same.
lightning arrester rating selection procedure: (line to line voltage(kV)/(squ.root of 3))*squ.root of 2. now the question is, IS this above formula correct for both STAR and DELTA connected system???
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