| Other Electrical Engineering Interview Questions |
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|what is kVA
|how rated the neutral voltage of transformer and reactor,
e.g. 400/220, 200MVA transformer have neutral voltage of
33kv. and reactor voltage 145kv. how this rating decided?
|why we use 6nos of C.Ts on 11kv incoming?
|Can i use to 3 phase 4 wire energy meter inplace of 3 phase
3 wire energy meter ?
I have a 500KVA transformer supplying whole factory having
3 phase and single phase mixed loads. Power room has
ammeters connected via CTs for individual phase. Now I know
that readings shown on meter for each phase say R,Y and B
are line currents. But when I want to know the total on
transformer do I need to add the currents of all three
phases readings shown on meter or value for anyone phase
will give me the correct power load on transformer for that
point of time.
2. If ammeter shows unbalanced readings for R,Y, B phases
say 150, 250 and 300 respectively so can I assume that 150A
i.e average of 3 will be the 3phase load currents and
remaining will be 1phase currents. Please clarify my doubt.
|xplain in detail d pr. of synchronous motors? why syn.
generators r used for the production of electricity?
|What is the difference between AC voltage and DC voltage?
|As per IS why should the control be taken only from R
phase, why not from B or Y phase??!!
|what are the standard transmision voltages in india?
|How to calculate the rating of ELCB OR RCCB for an
|Why MS rod or flat are used in stead of GI rod or flat in
switchyard earth mat ?
|How neutral voltage for transformer decided? eg 33kv neutral
voltage for 200MVA transformer?
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