A transformer has negative voltage regulation when its load
PF is
A zero B unity
C lagging D leading
what methods are used to improve power factor?
why is use the star and delta connection and difference
what is the difference between self excited & seperately excited ?
what is ATS & RING MAIN UNIT in Distribution System?And its Function.
In a incandescent bulb, if the glass is punctured, and then power is supplied, the tungsten filament blows up with a flash.Why?
What is rotating magnetic field?Discuss elaborately.
Maximum efficiency occurs in electrical machines is at i)Full load,ii)50% of full load,iii)Near full load,iv)None of these
what are all the preventive maintainance carried out in DG?
What is Auto Mains Failure Panel & Auto Synchronizing Panel
what is the function of gss in the dg set.
Differentiate between Zero and Negative sequence current
which is more dangerous AC\DC supply
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