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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 5851What 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
2268AVR 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 6478i 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....
1970If 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 10212what are the maximum available current, voltage ratings and switching speeds of the power electronic devices thyristor, power mosfet, igbt, and mct?
2161Post New Electrical Engineering Questions
what is the significance of tan&delta and how it performed in power transformer
Usage of flywheel diode in relays
Explain bypass capacitor?
How to know of any cable size if there are not written on cabl?
Dear sir, In our plant have Station Transformer having capacity,i want to know, why LV side 40 - 40MVA is given? & how we can get 6.3 KV supply from tertiary(i.e. Open delta connection), Vector Group YNyn0 - yn0 +d MVA Rating 80MVA / 40 - 40MVA + 26.7MVA Voltage rating 420 (Tap range +6,to -10)81.25% /11.5KV - 11.5KV +6.3KV
why any centrifugal blower draw more current in starting. consider id fan and fd fan?
describe the constructional features of an auto transformer and its principle operation
Hello Friends, How can we recognize the CT Star Point is S1 or S2 in case of Electro Mechanical Relays and what is meant by Restraining coil in relays and what is the purpose of that.. thank you in advance..
Explain what is clipper and clamper circuits?
Why corona leads to production of Ozone and glow of the color VOILET?
Efficient electrical earthing in hard rock area
Why 30kw 40 hp 4 pole 3ph induction motor over heated?any steps on reduction in heat?
what are the basic insulation levels & what its Unit
Does outdoor isolator loose connection cause short circuit current in that circuit? if yes then how ??
Classify driling machines.
