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 Categories >> Engineering >> Electrical Engineering
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hi,every one, i have to write the search paper on "performance policy optimization" of NGN (next generation networks). i need the material on this topic. can any body help me. please tell me any useful site where the good material is available and name of any reference book. it should be a great help for me.    0  157
If a manufacturer decribes a power supply transformer as providing a secondary voltage of 24 volts when connected to a 240 volts supply, do you think they are refering to the full load or no load secondary voltage?    3  560
may anybody tell me the names of institute where plc programing course are conducted    1  506
what is meant by vector group in transformers? wy we r using that?    1  929
how to stop oil leakage in power transformer. apgenco   1  1090
Please give me the formula stating relation between AC & Dc. jp-group   2  2419
when meggering a 3ph,480v oil reservoir heater on a regen gas compressor, why do I get a reading to ground when meggering phase to ground? shouldn't it read opened or is there something that makes it read closed? on the same heater, when ohming, it reads open. thanx    1  500
Is a DC Transformer Possible? if Yes, Then Why, if not Then Why?    9  1839
One of our gas turbine generator unit "1st stage rotor ground fault" alarm was occured several times. we tried to measure some voltage vulue ground fault protection relay (UNS3020a made by ABB and we measured the value of: Ground: 0.9VDC 5V: 5.8VDC 24V: 23VDC u+: 300 – 350mVAC Rf1: 17.5mVAC Rf2: 17.6mVAC The unit still running and the alarm was reset. As of 6pm yesterday and unitl now no alarm happened again. I our protection relay was defective?    1  727
what is synchronizing panel & its working.    3  1944
what is meant by phase &line voltage, how its differ from each other ?    5  2763
PLEASE INFORM ABOUT THE IDEAL TEST RESULTS OF MAGNETIC BALANCE TEST OF TRANSFORMER 33/11 kv DELTA-STAR T/F    0  173
why does the time taken for fuse to melt is longer as the wire length increases?    1  385
how many testing is necessary for 27 MVA transformer?    0  159
when we start the tube light, then it takes initially 1100 volt, after glow it takes 120 volt?(when we give 220 volt a.c.)    2  884
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Un-Answered Questions
 
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will there be any problem by recovering slip from single phase induction motors? 113
Installation resistance for whole installation of 16 kva & 25 KVA DTRA a) Between each conductor b) between conductor to earth c) installation resistance for each apparatus, each conductor to earth d) earth resistance for the system of earthing 129
How phase to phase voltage comes 440V. 143
How many points does a Circuit can have? 107
how can we make cable shedule for controll wiring ? which details must be required for it.? 109
which type of motor is used in automatic swing gate 131
We have given to 3phase supply to ups system & how can coming netural 131
How many sprinklers should be in one pipe line? 96
IF I USED VVVF DRIVE IN FAN APPLICATION MOTOR IN 6.6 KV ( 700 KW) MOTOR & DURING NORMAL RUN OPERATION TIME IF RPM SUDDENLY REDUCE IN MOTOR BY DRIVE(E. MOTOR RPM REDUCE SUDENLY 687 TO 550 RPM) WAHT WILL BE HAPPEND IN DRIVE 280
what will happen if ac and dc supplies given 108
limitation of conductor height on ground when we consider EMC 126
Between educational qualification and practical work experience, give us a brief explanation on your practical experience in your past Endeavour that you performed well to the satisfaction of your past or present employer? 208
plz explain the auot-reclosing circuit in electrical engineeing 127
if we have a industrial load of 400 kilowatts with 415 volt AC then how much total harmonic distortion (thd%) should be acceptable for steady power system. 148
WHAT IS THE TECHNICAL SPECIFICATION OF C CURVE & D CURVE LEGRAND MAKE MCB 154
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