What can be a rating of a transformer(KVA) if the load is
about 1000KW?illustrate by showing formula?
Answers were Sorted based on User's Feedback
Answer / abdulwahab m. khamis
the answer is 1500 kva
kw=pf*kva if we consider pf=0.8 then kva=1250,multiply this
result * 1.2 for starting equals (1500 kva)
Is This Answer Correct ? | 7 Yes | 0 No |
whata is battery charger ?how many cells connected for 110v?
1)Why electric shock is feel ?? n in a Electric Train why we didnt feel that ? 2)What is the reason for transformer Noise ?? 3)What is relation b/w Transmission Lines & Communication Lines ? 4)Which material is used for making Transformer oil & How u measure its dielectric strength & Name the test ?
what kind of quetions will ask in BHEL in interview? Plz help me?
WE know that for Inductor X=2pifL,In DC f=0,then X=0 so,V=IX=0;But In the DC excitation of rotor of AC generator,DC motor field coil which coils are inductor so why does not applying DC voltage short the rotor coil of AC generator and field coil of motor?If it would then DC source might be damaged but it is not happened. Why does the strand conductor of Electrical power transmission line make twist?
what is bus coupler, where it used.
what is p.s impedance measurement test in earthing transformer?
which is better VCB or ACB and why?
what is the meaning of number in (11, 31, 61,14, etc. CDG11, CDG31, CDG61, DDT32
which level of transformer oil has got low dielectric strength ?why?
when giving a supply to wounded coil it will get magnetised, but the same is not if it is not wounded on a core..and it is getiing short....why.......
why capacitor do not switch ON the DG power? (I had checked, capacitor ON in DG power that time current rating was reduced.)
why does chattering take place in ac contactors? can it be avoided & what care does the manufacturer take to eliminate this phenomenon????