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5- What is the task (function) of the excitation and isolation transformers in power plant? 6- What is the task (function) of LCI (A), LCI (B) and LCI (COS) in power plant? : LCI (A) and LCI(B) are load commutating inverter for generator turbine starting. , LCI (COS) is load commutating inverter change over switch
38697- What is the Dissipation Factor and the difference between it and Insulation Resistance Test? 8- What is the task (function) of DC and AC reactors in power plant? 9- What is the task (function) of (open delta with earthed) in some types in transformers? 10- What is the base of the selection of the vector group in transformers? 11- What is the zig-zag transformer and its function by drawing in large detail? 12- What is the polarity ? 13- Why we make short between phase(R) in high side and phase (r) in low side in vector group test? Where High Side ( R ,S and T ) and Low Side ( r ,s and t ). 14- What are the time on delay and time off delay? 15- What is the vector group? 15- What is the task (function) of different types of vector group such as Dyn11 , Dd0 , YNd1,……..,?
2325How to calculate cable sizes in sq.mm. with using motor KW? Any formula there?
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18 307478I need the recommended size for a 3 phase transformer at 13.8 KV Primary and connected loads of 3000 kVA at 4200 volts and 2375 kVA @ 480 volts AC.
2083what happen if i connect DYn11 and DYn1 vector group transformer in parrallel?other things are same like votage ration,x/r ratiob etc...
4 32872is there any difference between protection C.T and measuring C.T?if yes then what is the difference?
4 12777Post New Electrical Engineering Questions
how to changeover ups in this power failur time?
The synchronous machine excitation system explain
wat is the current produced in a 5000v megger? when the positive and negetive terminals are touched on our body get s shock?
it is possible to rotate the DG engine dc starter with wrong polarity connections? why?
What is the difference between the relay and the circuit breaker?
what is the use of current transformer in power transformer secondary side.?its connectyed in WTI
what is size of 3phase 4wire cable to be used for 11 ton ductable A.C and how to calculate cable size for different load
Why two phase welding machine is used instead of three phase welding machine.
Write the force balance equation of ideal spring element.
IN 1000kva transformer where the oil and winding temperature sensors is connected
what happen if the supply is given to the stator of the 3phase induction motor with out assembling the rotor ?
What are test values for an 63 KVA and 100 Kva Distribution Transformers for the following typical tests 1)Magnetic balance 2)Short circuit test 3)Open Circuit test 4)Vector group confirmation test .please give me the standard values for all the above tests.
What should be the values of settling time, peak time, steady state error, overshoot, rise time, MPOS (Maximum percent over shoot) to keep the system in transient state, to keep the system in steady state ?
difference between main metering kiosk and check metering kiosk
what is the internal working of star delta starter
