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When VFD is connected to a 3 phase main supply there is load current difference between incomer to VFD and outgoing from VFD.
1 5852What is the implications when 600 hp motor is started when the unit is running with Transformer of capacity 1500 KVA and DG set of 1000kva
2269AVR is used for the Voltage regulation of the Generator using the feedback signal by exciting the field winding of the generator.But how the field winding will be excited & using what?
2 6479i need of the bhel question papers along with answers and also give some website names for the downloading question (electrical and electronics engg question)please help me....
1972If a fan get trip and run in reverse direction due to system flow. Now in this condition during starting how can a VFD bring this negative speed to zero and later run in forward direction?
2 6146I have a transformer whose primary operates at 230V, 50Hz for which the secondary voltage will be 12V, 50Hz. What will be the secondary voltage if the primary is fed with 400V, 8KHZ Signal?
ABB,
6 10216what are the maximum available current, voltage ratings and switching speeds of the power electronic devices thyristor, power mosfet, igbt, and mct?
2162Post New Electrical Engineering Questions
How can calculate the earthing strip of Copper/GI for rating of 30kV,discharge current 10KA Lightning arrester.
Explain how you intend to work under pressure to meet up with deadline target?
in general it is observed in power stations, the tertiary winding is used in higher rating Y-Y auto transformer but not in Y-Y power transformer. is the tertiary winding is compulsory then why it is not using in power transformerÂ
how to calculate the formula of cable size if motor kw is given
2- What are the percentages between excitation currents in phase (R, S and T) in ∆ and Ỵ connections in excitation Current test in transformers?
why we cannot protect 100% winding of an alternator by using differential protection?
how calculate the electrical load for industry and office
For a three phase induction motor, what will be the effect on motor if the neutral of the system is shifted to say 20 deg.?
what is relay what is protection & contact multiplying relays where it is used function in brief
how to select energy meter? have any calculation?
can anyone explain 11kV 3core cable megger,hi pot test procedure with connection details?
Did RMU have ct and pt ?
What will be electrical cost per sqft for IT building (basebuild and fitout)and for residential township?
what is the difference between active power and reactive power and apparant power in practical as well as theoritical
What is the kiosk parts, about them and their functions ? If anybody have some PDFs files or details about this plz send it on tawhidfaisal@Yahoo.com
