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What will be the voltage impact on secondary side of two transformers with different vector groups when both voltages are compared.
1 2069Why does the speed regulating system adopting I controller have no steady-state error? In this single closed-loop speed regulating system, when the input of the I controller Un=0, what is the output voltage of the regulator? What factors do the output voltage depend on?
1 1928What is the advantage of Neutral graunding transformer insted of Neutral graunding Resistance in generating station explain briefly.
2 7497Please tell me if you are electrical engineer,and you are appointed for the maintainance of Electrical Power plant,then which parts of the plant deal with you.Also tell how these parts/components work.
1 3434Find active & Reactive Power transmitted in a transmisston line having Vs30 degree(sending end) to Vr(zero degree)at receving end with line inductance X ohm. Vs(30degree)-------------------Vr(zero degree) X ohm
3 5158How can we calculate the capacity of the capacitor bank attached with the Main panel, when we know the capacity of the panel installed in KVA Rating?
2 78521.what type of oil used in tranformer. 2.oil vesocity. 3.oil gauge. 4.witch time oil filterring & how much temperature maintaned.
9 14819Post New Electrical Engineering Questions
How can we calculate the motor frame sizes?
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xfhnchncv?
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What will happened if the neutral of the (star connected secondry) Xformer disconnected? (if its Above KVA rated one)
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Draw a SLD of DG distribution up to main LT panel?
What will be result if we connect LT votage to the terminal of HT motor?
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what is mean by restructuring power system?
what is the condition for YnD11
A 15 kw squirrel cage motor having a maximum efficiency of 90% on a continuous full load has temperature rise of 42 degrees celcius after 30 min and 52 degrees celcius after 1 hr under the above operation conditions. a) calculate its final steady state temperature rise on continuous load and the heating time constatnt. b) if the motor is operated on a short load for 9 min estimate its temperature rise. c) calculate the maximum overload that can be applied on a short, 9 min rating so that the temperature rise is the same as the final steady state temperature rise on continuous load.
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